pollution assignment in english

Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants.

Biology, Ecology, Health, Earth Science, Geography

Loading ...

Pollution is the introduction of harmful materials into the environment . These harmful materials are called pollutants . Pollutants can be natural, such as volcanic ash . They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land. Many things that are useful to people produce pollution. Cars spew pollutants from their exhaust pipes. Burning coal to create electricity pollutes the air. Industries and homes generate garbage and sewage that can pollute the land and water. Pesticides —chemical poisons used to kill weeds and insects— seep into waterways and harm wildlife . All living things—from one-celled microbes to blue whales—depend on Earth ’s supply of air and water. When these resources are polluted, all forms of life are threatened. Pollution is a global problem. Although urban areas are usually more polluted than the countryside, pollution can spread to remote places where no people live. For example, pesticides and other chemicals have been found in the Antarctic ice sheet . In the middle of the northern Pacific Ocean, a huge collection of microscopic plastic particles forms what is known as the Great Pacific Garbage Patch . Air and water currents carry pollution. Ocean currents and migrating fish carry marine pollutants far and wide. Winds can pick up radioactive material accidentally released from a nuclear reactor and scatter it around the world. Smoke from a factory in one country drifts into another country. In the past, visitors to Big Bend National Park in the U.S. state of Texas could see 290 kilometers (180 miles) across the vast landscape . Now, coal-burning power plants in Texas and the neighboring state of Chihuahua, Mexico have spewed so much pollution into the air that visitors to Big Bend can sometimes see only 50 kilometers (30 miles). The three major types of pollution are air pollution , water pollution , and land pollution . Air Pollution Sometimes, air pollution is visible . A person can see dark smoke pour from the exhaust pipes of large trucks or factories, for example. More often, however, air pollution is invisible . Polluted air can be dangerous, even if the pollutants are invisible. It can make people’s eyes burn and make them have difficulty breathing. It can also increase the risk of lung cancer . Sometimes, air pollution kills quickly. In 1984, an accident at a pesticide plant in Bhopal, India, released a deadly gas into the air. At least 8,000 people died within days. Hundreds of thou sands more were permanently injured. Natural disasters can also cause air pollution to increase quickly. When volcanoes erupt , they eject volcanic ash and gases into the atmosphere . Volcanic ash can discolor the sky for months. After the eruption of the Indonesian volcano of Krakatoa in 1883, ash darkened the sky around the world. The dimmer sky caused fewer crops to be harvested as far away as Europe and North America. For years, meteorologists tracked what was known as the “equatorial smoke stream .” In fact, this smoke stream was a jet stream , a wind high in Earth’s atmosphere that Krakatoa’s air pollution made visible. Volcanic gases , such as sulfur dioxide , can kill nearby residents and make the soil infertile for years. Mount Vesuvius, a volcano in Italy, famously erupted in 79, killing hundreds of residents of the nearby towns of Pompeii and Herculaneum. Most victims of Vesuvius were not killed by lava or landslides caused by the eruption. They were choked, or asphyxiated , by deadly volcanic gases. In 1986, a toxic cloud developed over Lake Nyos, Cameroon. Lake Nyos sits in the crater of a volcano. Though the volcano did not erupt, it did eject volcanic gases into the lake. The heated gases passed through the water of the lake and collected as a cloud that descended the slopes of the volcano and into nearby valleys . As the toxic cloud moved across the landscape, it killed birds and other organisms in their natural habitat . This air pollution also killed thousands of cattle and as many as 1,700 people. Most air pollution is not natural, however. It comes from burning fossil fuels —coal, oil , and natural gas . When gasoline is burned to power cars and trucks, it produces carbon monoxide , a colorless, odorless gas. The gas is harmful in high concentrations , or amounts. City traffic produces highly concentrated carbon monoxide. Cars and factories produce other common pollutants, including nitrogen oxide , sulfur dioxide, and hydrocarbons . These chemicals react with sunlight to produce smog , a thick fog or haze of air pollution. The smog is so thick in Linfen, China, that people can seldom see the sun. Smog can be brown or grayish blue, depending on which pollutants are in it. Smog makes breathing difficult, especially for children and older adults. Some cities that suffer from extreme smog issue air pollution warnings. The government of Hong Kong, for example, will warn people not to go outside or engage in strenuous physical activity (such as running or swimming) when smog is very thick.

When air pollutants such as nitrogen oxide and sulfur dioxide mix with moisture, they change into acids . They then fall back to earth as acid rain . Wind often carries acid rain far from the pollution source. Pollutants produced by factories and power plants in Spain can fall as acid rain in Norway. Acid rain can kill all the trees in a forest . It can also devastate lakes, streams, and other waterways. When lakes become acidic, fish can’t survive . In Sweden, acid rain created thousands of “ dead lakes ,” where fish no longer live. Acid rain also wears away marble and other kinds of stone . It has erased the words on gravestones and damaged many historic buildings and monuments . The Taj Mahal , in Agra, India, was once gleaming white. Years of exposure to acid rain has left it pale. Governments have tried to prevent acid rain by limiting the amount of pollutants released into the air. In Europe and North America, they have had some success, but acid rain remains a major problem in the developing world , especially Asia. Greenhouse gases are another source of air pollution. Greenhouse gases such as carbon dioxide and methane occur naturally in the atmosphere. In fact, they are necessary for life on Earth. They absorb sunlight reflected from Earth, preventing it from escaping into space. By trapping heat in the atmosphere, they keep Earth warm enough for people to live. This is called the greenhouse effect . But human activities such as burning fossil fuels and destroying forests have increased the amount of greenhouse gases in the atmosphere. This has increased the greenhouse effect, and average temperatures across the globe are rising. The decade that began in the year 2000 was the warmest on record. This increase in worldwide average temperatures, caused in part by human activity, is called global warming . Global warming is causing ice sheets and glaciers to melt. The melting ice is causing sea levels to rise at a rate of two millimeters (0.09 inches) per year. The rising seas will eventually flood low-lying coastal regions . Entire nations, such as the islands of Maldives, are threatened by this climate change . Global warming also contributes to the phenomenon of ocean acidification . Ocean acidification is the process of ocean waters absorbing more carbon dioxide from the atmosphere. Fewer organisms can survive in warmer, less salty waters. The ocean food web is threatened as plants and animals such as coral fail to adapt to more acidic oceans. Scientists have predicted that global warming will cause an increase in severe storms . It will also cause more droughts in some regions and more flooding in others. The change in average temperatures is already shrinking some habitats, the regions where plants and animals naturally live. Polar bears hunt seals from sea ice in the Arctic. The melting ice is forcing polar bears to travel farther to find food , and their numbers are shrinking. People and governments can respond quickly and effectively to reduce air pollution. Chemicals called chlorofluorocarbons (CFCs) are a dangerous form of air pollution that governments worked to reduce in the 1980s and 1990s. CFCs are found in gases that cool refrigerators, in foam products, and in aerosol cans . CFCs damage the ozone layer , a region in Earth’s upper atmosphere. The ozone layer protects Earth by absorbing much of the sun’s harmful ultraviolet radiation . When people are exposed to more ultraviolet radiation, they are more likely to develop skin cancer, eye diseases, and other illnesses. In the 1980s, scientists noticed that the ozone layer over Antarctica was thinning. This is often called the “ ozone hole .” No one lives permanently in Antarctica. But Australia, the home of more than 22 million people, lies at the edge of the hole. In the 1990s, the Australian government began an effort to warn people of the dangers of too much sun. Many countries, including the United States, now severely limit the production of CFCs. Water Pollution Some polluted water looks muddy, smells bad, and has garbage floating in it. Some polluted water looks clean, but is filled with harmful chemicals you can’t see or smell. Polluted water is unsafe for drinking and swimming. Some people who drink polluted water are exposed to hazardous chemicals that may make them sick years later. Others consume bacteria and other tiny aquatic organisms that cause disease. The United Nations estimates that 4,000 children die every day from drinking dirty water. Sometimes, polluted water harms people indirectly. They get sick because the fish that live in polluted water are unsafe to eat. They have too many pollutants in their flesh. There are some natural sources of water pollution. Oil and natural gas, for example, can leak into oceans and lakes from natural underground sources. These sites are called petroleum seeps . The world’s largest petroleum seep is the Coal Oil Point Seep, off the coast of the U.S. state of California. The Coal Oil Point Seep releases so much oil that tar balls wash up on nearby beaches . Tar balls are small, sticky pieces of pollution that eventually decompose in the ocean.

Human activity also contributes to water pollution. Chemicals and oils from factories are sometimes dumped or seep into waterways. These chemicals are called runoff. Chemicals in runoff can create a toxic environment for aquatic life. Runoff can also help create a fertile environment for cyanobacteria , also called blue-green algae . Cyanobacteria reproduce rapidly, creating a harmful algal bloom (HAB) . Harmful algal blooms prevent organisms such as plants and fish from living in the ocean. They are associated with “ dead zones ” in the world’s lakes and rivers, places where little life exists below surface water. Mining and drilling can also contribute to water pollution. Acid mine drainage (AMD) is a major contributor to pollution of rivers and streams near coal mines . Acid helps miners remove coal from the surrounding rocks . The acid is washed into streams and rivers, where it reacts with rocks and sand. It releases chemical sulfur from the rocks and sand, creating a river rich in sulfuric acid . Sulfuric acid is toxic to plants, fish, and other aquatic organisms. Sulfuric acid is also toxic to people, making rivers polluted by AMD dangerous sources of water for drinking and hygiene . Oil spills are another source of water pollution. In April 2010, the Deepwater Horizon oil rig exploded in the Gulf of Mexico, causing oil to gush from the ocean floor. In the following months, hundreds of millions of gallons of oil spewed into the gulf waters. The spill produced large plumes of oil under the sea and an oil slick on the surface as large as 24,000 square kilometers (9,100 square miles). The oil slick coated wetlands in the U.S. states of Louisiana and Mississippi, killing marsh plants and aquatic organisms such as crabs and fish. Birds, such as pelicans , became coated in oil and were unable to fly or access food. More than two million animals died as a result of the Deepwater Horizon oil spill. Buried chemical waste can also pollute water supplies. For many years, people disposed of chemical wastes carelessly, not realizing its dangers. In the 1970s, people living in the Love Canal area in Niagara Falls, New York, suffered from extremely high rates of cancer and birth defects . It was discovered that a chemical waste dump had poisoned the area’s water. In 1978, 800 families living in Love Canal had to a bandon their homes. If not disposed of properly, radioactive waste from nuclear power plants can escape into the environment. Radioactive waste can harm living things and pollute the water. Sewage that has not been properly treated is a common source of water pollution. Many cities around the world have poor sewage systems and sewage treatment plants. Delhi, the capital of India, is home to more than 21 million people. More than half the sewage and other waste produced in the city are dumped into the Yamuna River. This pollution makes the river dangerous to use as a source of water for drinking or hygiene. It also reduces the river’s fishery , resulting in less food for the local community. A major source of water pollution is fertilizer used in agriculture . Fertilizer is material added to soil to make plants grow larger and faster. Fertilizers usually contain large amounts of the elements nitrogen and phosphorus , which help plants grow. Rainwater washes fertilizer into streams and lakes. There, the nitrogen and phosphorus cause cyanobacteria to form harmful algal blooms. Rain washes other pollutants into streams and lakes. It picks up animal waste from cattle ranches. Cars drip oil onto the street, and rain carries it into storm drains , which lead to waterways such as rivers and seas. Rain sometimes washes chemical pesticides off of plants and into streams. Pesticides can also seep into groundwater , the water beneath the surface of the Earth. Heat can pollute water. Power plants, for example, produce a huge amount of heat. Power plants are often located on rivers so they can use the water as a coolant . Cool water circulates through the plant, absorbing heat. The heated water is then returned to the river. Aquatic creatures are sensitive to changes in temperature. Some fish, for example, can only live in cold water. Warmer river temperatures prevent fish eggs from hatching. Warmer river water also contributes to harmful algal blooms. Another type of water pollution is simple garbage. The Citarum River in Indonesia, for example, has so much garbage floating in it that you cannot see the water. Floating trash makes the river difficult to fish in. Aquatic animals such as fish and turtles mistake trash, such as plastic bags, for food. Plastic bags and twine can kill many ocean creatures. Chemical pollutants in trash can also pollute the water, making it toxic for fish and people who use the river as a source of drinking water. The fish that are caught in a polluted river often have high levels of chemical toxins in their flesh. People absorb these toxins as they eat the fish. Garbage also fouls the ocean. Many plastic bottles and other pieces of trash are thrown overboard from boats. The wind blows trash out to sea. Ocean currents carry plastics and other floating trash to certain places on the globe, where it cannot escape. The largest of these areas, called the Great Pacific Garbage Patch, is in a remote part of the Pacific Ocean. According to some estimates, this garbage patch is the size of Texas. The trash is a threat to fish and seabirds, which mistake the plastic for food. Many of the plastics are covered with chemical pollutants. Land Pollution Many of the same pollutants that foul the water also harm the land. Mining sometimes leaves the soil contaminated with dangerous chemicals. Pesticides and fertilizers from agricultural fields are blown by the wind. They can harm plants, animals, and sometimes people. Some fruits and vegetables absorb the pesticides that help them grow. When people consume the fruits and vegetables, the pesticides enter their bodies. Some pesticides can cause cancer and other diseases. A pesticide called DDT (dichlorodiphenyltrichloroethane) was once commonly used to kill insects, especially mosquitoes. In many parts of the world, mosquitoes carry a disease called malaria , which kills a million people every year. Swiss chemist Paul Hermann Muller was awarded the Nobel Prize for his understanding of how DDT can control insects and other pests. DDT is responsible for reducing malaria in places such as Taiwan and Sri Lanka. In 1962, American biologist Rachel Carson wrote a book called Silent Spring , which discussed the dangers of DDT. She argued that it could contribute to cancer in humans. She also explained how it was destroying bird eggs, which caused the number of bald eagles, brown pelicans, and ospreys to drop. In 1972, the United States banned the use of DDT. Many other countries also banned it. But DDT didn’t disappear entirely. Today, many governments support the use of DDT because it remains the most effective way to combat malaria. Trash is another form of land pollution. Around the world, paper, cans, glass jars, plastic products, and junked cars and appliances mar the landscape. Litter makes it difficult for plants and other producers in the food web to create nutrients . Animals can die if they mistakenly eat plastic. Garbage often contains dangerous pollutants such as oils, chemicals, and ink. These pollutants can leech into the soil and harm plants, animals, and people. Inefficient garbage collection systems contribute to land pollution. Often, the garbage is picked up and brought to a dump, or landfill . Garbage is buried in landfills. Sometimes, communities produce so much garbage that their landfills are filling up. They are running out of places to dump their trash. A massive landfill near Quezon City, Philippines, was the site of a land pollution tragedy in 2000. Hundreds of people lived on the slopes of the Quezon City landfill. These people made their living from recycling and selling items found in the landfill. However, the landfill was not secure. Heavy rains caused a trash landslide, killing 218 people. Sometimes, landfills are not completely sealed off from the land around them. Pollutants from the landfill leak into the earth in which they are buried. Plants that grow in the earth may be contaminated, and the herbivores that eat the plants also become contaminated. So do the predators that consume the herbivores. This process, where a chemical builds up in each level of the food web, is called bioaccumulation . Pollutants leaked from landfills also leak into local groundwater supplies. There, the aquatic food web (from microscopic algae to fish to predators such as sharks or eagles) can suffer from bioaccumulation of toxic chemicals. Some communities do not have adequate garbage collection systems, and trash lines the side of roads. In other places, garbage washes up on beaches. Kamilo Beach, in the U.S. state of Hawai'i, is littered with plastic bags and bottles carried in by the tide . The trash is dangerous to ocean life and reduces economic activity in the area. Tourism is Hawai'i’s largest industry . Polluted beaches discourage tourists from investing in the area’s hotels, restaurants, and recreational activities. Some cities incinerate , or burn, their garbage. Incinerating trash gets rid of it, but it can release dangerous heavy metals and chemicals into the air. So while trash incinerators can help with the problem of land pollution, they sometimes add to the problem of air pollution. Reducing Pollution Around the world, people and governments are making efforts to combat pollution. Recycling, for instance, is becoming more common. In recycling, trash is processed so its useful materials can be used again. Glass, aluminum cans, and many types of plastic can be melted and reused . Paper can be broken down and turned into new paper. Recycling reduces the amount of garbage that ends up in landfills, incinerators, and waterways. Austria and Switzerland have the highest recycling rates. These nations recycle between 50 and 60 percent of their garbage. The United States recycles about 30 percent of its garbage. Governments can combat pollution by passing laws that limit the amount and types of chemicals factories and agribusinesses are allowed to use. The smoke from coal-burning power plants can be filtered. People and businesses that illegally dump pollutants into the land, water, and air can be fined for millions of dollars. Some government programs, such as the Superfund program in the United States, can force polluters to clean up the sites they polluted. International agreements can also reduce pollution. The Kyoto Protocol , a United Nations agreement to limit the emission of greenhouse gases, has been signed by 191 countries. The United States, the world’s second-largest producer of greenhouse gases, did not sign the agreement. Other countries, such as China, the world’s largest producer of greenhouse gases, have not met their goals. Still, many gains have been made. In 1969, the Cuyahoga River, in the U.S. state of Ohio, was so clogged with oil and trash that it caught on fire. The fire helped spur the Clean Water Act of 1972. This law limited what pollutants could be released into water and set standards for how clean water should be. Today, the Cuyahoga River is much cleaner. Fish have returned to regions of the river where they once could not survive. But even as some rivers are becoming cleaner, others are becoming more polluted. As countries around the world become wealthier, some forms of pollution increase. Countries with growing economies usually need more power plants, which produce more pollutants. Reducing pollution requires environmental, political, and economic leadership. Developed nations must work to reduce and recycle their materials, while developing nations must work to strengthen their economies without destroying the environment. Developed and developing countries must work together toward the common goal of protecting the environment for future use.

How Long Does It Last? Different materials decompose at different rates. How long does it take for these common types of trash to break down?

• Paper: 2-4 weeks
• Orange peel: 6 months
• Milk carton: 5 years
• Plastic bag: 15 years
• Tin can: 100 years
• Plastic bottle: 450 years
• Glass bottle: 500 years
• Styrofoam: Never

Indoor Air Pollution The air inside your house can be polluted. Air and carpet cleaners, insect sprays, and cigarettes are all sources of indoor air pollution.

Light Pollution Light pollution is the excess amount of light in the night sky. Light pollution, also called photopollution, is almost always found in urban areas. Light pollution can disrupt ecosystems by confusing the distinction between night and day. Nocturnal animals, those that are active at night, may venture out during the day, while diurnal animals, which are active during daylight hours, may remain active well into the night. Feeding and sleep patterns may be confused. Light pollution also indicates an excess use of energy. The dark-sky movement is a campaign by people to reduce light pollution. This would reduce energy use, allow ecosystems to function more normally, and allow scientists and stargazers to observe the atmosphere.

Noise Pollution Noise pollution is the constant presence of loud, disruptive noises in an area. Usually, noise pollution is caused by construction or nearby transportation facilities, such as airports. Noise pollution is unpleasant, and can be dangerous. Some songbirds, such as robins, are unable to communicate or find food in the presence of heavy noise pollution. The sound waves produced by some noise pollutants can disrupt the sonar used by marine animals to communicate or locate food.

Media Credits

The audio, illustrations, photos, and videos are credited beneath the media asset, except for promotional images, which generally link to another page that contains the media credit. The Rights Holder for media is the person or group credited.

Illustrators

Educator reviewer, last updated.

March 6, 2024

User Permissions

For information on user permissions, please read our Terms of Service. If you have questions about how to cite anything on our website in your project or classroom presentation, please contact your teacher. They will best know the preferred format. When you reach out to them, you will need the page title, URL, and the date you accessed the resource.

If a media asset is downloadable, a download button appears in the corner of the media viewer. If no button appears, you cannot download or save the media.

Text on this page is printable and can be used according to our Terms of Service .

Interactives

Any interactives on this page can only be played while you are visiting our website. You cannot download interactives.

Related Resources

An official website of the United States government

Here’s how you know

Official websites use .gov A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS A lock ( Lock A locked padlock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

JavaScript appears to be disabled on this computer. Please click here to see any active alerts .

Lesson Plans, Teacher Guides and Online Environmental Resources for Educators

Find an array of environmental and science based lesson plans, activities and ideas below from EPA, other federal agencies and external organizations.  ​ Encontrar recursos para estudiantes y maestros.

Topics: Air | Climate Change | Ecosystems | Energy | Health | Waste | Water

Acid Rain: A Teacher's Guide   (PDF 56 pp, 4.6 MB) Lesson plan and activities from EPA for teachers on acid rain. Grades: 6-8 Type of Resource: Lesson plan

Acid Rain Student Pages Find the acid rain student pages, as well as general information for older students or adults. Grades: K-12 Type of Resource: Lesson plans and experiments

AIRNOW Get up-to-the-minute information about air pollution in your community, through a joint project from EPA, the National Oceanic and Atmospheric Administration, the National Park Service and other partners. The AIRNOW website includes maps, forecasts, and information about the health effects of air pollution. Grades: 9-12 Type of Resource: Website

AIRNOW Air Quality Resources  Find air quality curriculum materials and activities from AIRNOW, including a toolkit and workshop opportunities for teachers. Grades: K-8 Type of Resource: Curriculum guide

Measuring Air Quality Improvements from Vegetative Barriers This unit has been designed by EPA as a teaching aid on the topic of air quality; particularly, investigating the role vegetative barriers play in improving air quality for surrounding areas. Grades: K-5 Type of Resource: Lesson Plan

Carl Gets Some Rest (PDF 12 pp, 765 KB) This EPA coloring and story book, for children in pre-school through 2nd grade, teaches a simple lesson: there are many transportation alternatives to using a car. Grades: K-2 Type of Resource: Coloring Book

Creating Healthy Indoor Air Quality in Schools This EPA page provides information on indoor air quality in school buildings and how to order the Tools for Schools Action Kit. The kit shows how to carry out a practical plan of action to improve indoor air quality at little or no cost using common-sense activities and in-house staff. Grades: K-12 Type of Resource: Toolkit

EnviroAtlas Educational Materials These ready-made lesson plans can be used in formal and informal education settings and are aligned with Next Generation and State Science Standards. Grades: K-12 Type of Resource: Lesson Plans

Noise Pollution for Kids   (PDF 15 pp, 6.54 MB) This EPA booklet for your students will teach you how to identify which sounds are loud and ways to protect your hearing and health. Grades: K-5 Type of Resource: Activity book

Particulate Matter (PM) Air Sensor Kits Particle pollution known as particulate matter (PM) is one of the major air pollutants regulated by EPA to protect public health and the environment. A PM air sensor kit has been developed by EPA researchers as an educational tool to teach children about air quality and air science. Grades: 5-12 Type of Resource: Hands-on activity guide

Basic Ozone Layer Science Find a straightforward explanation of the ozone layer and ozone depletion. Grades: 9-12 Type of Resource: Website

AIRNOW's Ozone: Good Up High, Bad Nearby (PDF 4 pp) Ozone acts as a protective layer high above the Earth, but it can be harmful to breathe. This publication provides basic information about ground-level and high-altitude ozone. Grades:6-12 Type of Resource: Booklet/Brochure

Plain English Guide to the Clean Air Act A brief introduction to the 1990 version of the Clean Air Act, to help you understand what is in the law and how it may affect you. Grades: 9-12 Type of Resource: Booklet

RadTown USA EPA's RadTown USA is a virtual community that aims to educate students about the sources of radiation in our daily lives. Grades: 9-12 Type of Resource: Virtual activity

Teaching Kids to Conserve Energy at Home: Resources for K-12 teachers and parents This 11-minute presentation focuses on an introduction to energy and the environment, energy saving tips, how to use the Energy Star home energy yardstick, and homework ideas. Grades: K-12 Type of Resource: Video

Village Green Project These lessons provide a unique opportunity for students to learn about air quality as it relates to various topics of science appropriate to their grade level. The purpose of these lessons is to engage students of varying ability levels through hands-on and minds-on thinking. Each lesson is designed to focus around the topic of air quality; from issues of human health to career and 21st century skills. Grades: K-8 Type of Resource: Lesson Plan (PDF)  (52 pp)

Lea en español:  ¿Por qué Coco es de color naranja?

Why is Coco Orange? Coco has a problem. He is a chameleon, but he cannot change colors, and his asthma is acting up. Read how Coco and his friends at Lizard Lick Elementary solve this mystery as they learn about air quality and how to stay healthy when the air quality is bad. Grades: Pre K-2 Type of Resource: Book

Other resources

NOAA's Education Resources Website Explore this site to find the information you need to teach students about weather, climate change, and oceans. You'll find activities, background information, and much more! Grades: 6-12

National Park Service Education Resources Classroom materials, field trip opportunities and professional development programs for educators from the National Park Service. Grades: All

Climate and Health Lesson Plan and Toolkit by The American Public Health Association This lesson adopts materials developed by the National Institute for Environmental Health Sciences (NIH) to make it easy for public health professionals to guest teach at local high schools. For more resources aimed directly at teachers, see Climate Change and Human Health Lesson Plans by NIH. Grades: 9-12

EPA Publications

EPA has many publications on every environmental subject that you can download or order. See our predefined searches below on specific search terms to help you view our publication offerings from the National Service Center for Environmental Publications (NSCEP).

Predefined Search Terms:

• Activity Book
• Coloring Books
• Environmental Education
• Science Fair
• Students Home
• Community Service Project Ideas
• Science Fair Projects
• Homework Help and Activities for K-12 Students

Essay on Pollution for Students and Children

500+ words essay on pollution.

Pollution is a term which even kids are aware of these days. It has become so common that almost everyone acknowledges the fact that pollution is rising continuously. The term ‘pollution’ means the manifestation of any unsolicited foreign substance in something. When we talk about pollution on earth, we refer to the contamination that is happening of the natural resources by various pollutants . All this is mainly caused by human activities which harm the environment in ways more than one. Therefore, an urgent need has arisen to tackle this issue straightaway. That is to say, pollution is damaging our earth severely and we need to realize its effects and prevent this damage. In this essay on pollution, we will see what are the effects of pollution and how to reduce it.

Effects of Pollution

Pollution affects the quality of life more than one can imagine. It works in mysterious ways, sometimes which cannot be seen by the naked eye. However, it is very much present in the environment. For instance, you might not be able to see the natural gases present in the air, but they are still there. Similarly, the pollutants which are messing up the air and increasing the levels of carbon dioxide is very dangerous for humans. Increased level of carbon dioxide will lead to global warming .

Further, the water is polluted in the name of industrial development, religious practices and more will cause a shortage of drinking water. Without water, human life is not possible. Moreover, the way waste is dumped on the land eventually ends up in the soil and turns toxic. If land pollution keeps on happening at this rate, we won’t have fertile soil to grow our crops on. Therefore, serious measures must be taken to reduce pollution to the core.

Get English Important Questions here

Types of Pollution

• Air Pollution
• Water Pollution
• Soil Pollution

How to Reduce Pollution?

After learning the harmful effects of pollution, one must get on the task of preventing or reducing pollution as soon as possible. To reduce air pollution, people should take public transport or carpool to reduce vehicular smoke. While it may be hard, avoiding firecrackers at festivals and celebrations can also cut down on air and noise pollution. Above all, we must adopt the habit of recycling. All the used plastic ends up in the oceans and land, which pollutes them.

So, remember to not dispose of them off after use, rather reuse them as long as you can. We must also encourage everyone to plant more trees which will absorb the harmful gases and make the air cleaner. When talking on a bigger level, the government must limit the usage of fertilizers to maintain the soil’s fertility. In addition, industries must be banned from dumping their waste into oceans and rivers, causing water pollution.

To sum it up, all types of pollution is hazardous and comes with grave consequences. Everyone must take a step towards change ranging from individuals to the industries. As tackling this problem calls for a joint effort, so we must join hands now. Moreover, the innocent lives of animals are being lost because of such human activities. So, all of us must take a stand and become a voice for the unheard in order to make this earth pollution-free.

Get the huge list of more than 500 Essay Topics and Ideas

FAQs on Pollution

Q.1 What are the effects of pollution?

A.1 Pollution essentially affects the quality of human life. It degrades almost everything from the water we drink to the air we breathe. It damages the natural resources needed for a healthy life.

Q.2 How can one reduce pollution?

A.2 We must take individual steps to reduce pollution. People should decompose their waster mindfully, they should plant more trees. Further, one must always recycle what they can and make the earth greener.

Customize your course in 30 seconds

Which class are you in.

• Travelling Essay
• Picnic Essay
• Our Country Essay
• My Parents Essay
• Essay on Favourite Personality
• Essay on Memorable Day of My Life
• Essay on Knowledge is Power
• Essay on Gurpurab
• Essay on My Favourite Season
• Essay on Types of Sports

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Download the App

45,000+ students realised their study abroad dream with us. Take the first step today

Here’s your new year gift, one app for all your, study abroad needs, start your journey, track your progress, grow with the community and so much more.

Verification Code

An OTP has been sent to your registered mobile no. Please verify

Thanks for your comment !

Our team will review it before it's shown to our readers.

Essay on Pollution: Samples in 100, 150 and 200 Words

• Updated on  
• Apr 27, 2024

As the world embraced urbanization, mother nature witnessed the greener lands getting transformed into modern cities and metropolises. What followed is a trail of natural disasters signalling that something is wrong with the planet Earth. Pollution is increasingly asked under the writing section in school and college tests as well as competitive exams . This is because it is a relevant environmental issue today. This blog aims to help you with the necessary knowledge as well as tips and tricks to draft a well-written essay on pollution.

What is Pollution?

Pollution is the introduction of harmful materials into the environment. These materials are called pollutants. They can be created by human activity like trash and natural like volcanic ash. Pollutants damage the quality of water, air and land. Pollution is a global problem. Air and water carry pollution into the ocean currents and migrating fish. Pollution is among the many things that harm our planet- once greener and healthier than it is now. Pollution is a dangerous phenomenon that is contributing to an array of health issues.

Types of Pollution

In simple terms, pollution is defined as the contamination of the physical and biological constituents in the earth’s atmosphere. It affects human life and the natural environment to a very great extent. It degrades our natural resources, from the water we drink to the air we breathe. While writing an essay on Pollution, you must mention the major four types of pollution which are as follows:

• Air Pollution : Air pollution is the contamination of air in the atmosphere when harmful or excessive quantities of substances such as smoke and harmful gases from industries, CFCs and oxides produced by automobiles, the burning of solid wastes, etc. are introduced into the environment.
• Water Pollution : This refers to the contamination of natural resources of water, due to the addition of harmful chemical, biological or physical materials, which includes industrial wastes, oil spills, domestic and farm wastes, pesticides, as well as mining and agricultural wastes, to water resource which make it unusable.
• Soil Pollution : Land/Soil Pollution occurs due to the degradation of the earth’s surface by different commercial, industrial, agricultural and domestic activities. Causes of soil pollution also include mining, deforestation, dumping of e-waste and other industrial wastes, usage of harmful chemicals such as insecticides, pesticides, etc.
• Noise Pollution : Excess noise due to sounds created by machines, loudspeakers, microphones, loud music, noise from industries, construction and civil engineering works etc. lead to noise pollution.

Causes and Health Effects of Pollution

You can include various causes and health effects in your essay on Pollution from the following table:-

Sample Essay on Pollution in 100 Words

Pollution is the addition of unwanted substances which are incorporated into the environment that can damage our Earth. There are mainly four types of pollution, these include water pollution, air pollution, soil pollution, and noise pollution. One should note that any form of pollution is the result of careless activity carried out by man. We, humans daily dump waste directly into water bodies which leads to water pollution.

Vehicle emissions of smoke into the atmosphere impede the ability of all living things to breathe, leading to air pollution. Our garbage is dumped into landfills directly, which results in soil pollution. Although it cannot be seen, noise pollution is a severe type of pollution that can harm our ears.

Sample Essay on Pollution in 250-300 Words

The biggest threat planet Earth is facing is pollution. Unwanted substances leave a negative impact once released into an environment. There are four types of pollution air, water, land, and noise. Pollution affects the quality of life more than any human can imagine.

Due to air pollution, even teenage kids have developed various respiratory diseases. Water pollution has led to diseases in children. The waste we humans dump on the land or chemical fertilisers which are put on the land for agricultural purposes causes land/ soil pollution.

If the soil quality deteriorates due to such practices, the soil will become infertile and no crops could be grown in future. The government has launched various schemes over the years to fight pollution but individual efforts can also play a vital role.

Start by replacing plastic bags for shopping with cloth bags, stopping littering on roads and stopping wasting water are some of the basic things to start with that can lead to big changes in the environment.

Also Read: Essay on Green Energy PDF: 150 and 250 Words

Sample Essay on Pollution in 300-350 Words

One of the most critical threats faced by our planet in the present-day scenario. Environmental pollution is a global issue affecting people around the world. It is occurring in different forms, whether by affecting the air we breathe or the water resources we utilise for several purposes.

Air pollution came into being with an increase in the level of carbon dioxide, with the increase in pollutants which are contaminating the air and causing breathing discomfort as well as skin diseases to human beings. Talking about the other aspect, there is no life without water.

The water bodies are polluting and becoming unsafe for drinking or any other use because of industrial development, rapid urbanisation and various other reasons. Due to air pollution, diseases that can occur in human beings are asthma, various skin diseases, cancer, etc. Therefore, it is the essential need of the hour to take serious steps to reduce pollution to its core.

At a personal level, we can minimise environmental pollution by taking public transport or carpools to reduce vehicular smoke, avoiding firecrackers at festivals and celebrations can also cut down on air and noise pollution, and not using fertilisers and pesticides which can cause both water and soil pollution, and switching over to organic farming. The government can also bring strict rules and regulations to lessen industrial pollution.  

To sum up, any type of pollution is harmful to the environment with serious consequences like global warming, uneven climatic changes, etc. Due to our greediness and illegal human activities, the innocent lives of animals are lost. The time has come to join hands and work towards preserving and protecting the environment for the present as well as future generations.

Also Read: Essay on Environment: Examples and Tips

Short Essay on Pollution in English

Find a sample of a short essay on pollution below:

Related Reads

For more information on such interesting topics, visit our essay-writing page and follow Leverage Edu ! 

Nikita Puri

Nikita is a creative writer and editor, who is always ready to learn new skills. She has great knowledge about study abroad universities, researching and writing blogs about them. Being a perfectionist, she has a habit of keeping her tasks complete on time before the OCD hits her. When Nikita is not busy working, you can find her eating while binge-watching The office. Also, she breathes music. She has done her bachelor's from Delhi University and her master's from Jamia Millia Islamia.

Leave a Reply Cancel reply

Save my name, email, and website in this browser for the next time I comment.

Contact no. *

pollution is very harmful to the environment. By pollution many diseases and virus like coronavirus. So JOIN THE GREEN REVOLUTION AND STOP POLLUTION

PLANT MORE AND MORE TREES TO REDUCE POLLUTION

Leaving already?

8 Universities with higher ROI than IITs and IIMs

Grab this one-time opportunity to download this ebook

Connect With Us

45,000+ students realised their study abroad dream with us. take the first step today..

Resend OTP in

Need help with?

Study abroad.

UK, Canada, US & More

IELTS, GRE, GMAT & More

Scholarship, Loans & Forex

Country Preference

New Zealand

Which English test are you planning to take?

Which academic test are you planning to take.

Not Sure yet

When are you planning to take the exam?

Already booked my exam slot

Within 2 Months

Want to learn about the test

Which Degree do you wish to pursue?

When do you want to start studying abroad.

September 2024

January 2025

What is your budget to study abroad?

How would you describe this article ?

Please rate this article

We would like to hear more.

Essay on Pollution In English For Students

Essay on Pollution for Students: Explore Essay on pollution in varying lengths, including 100, 150, 200, 600, and 800 words.

November 19, 2023

Table of Contents

Essay on Pollution: Pollution is a big problem that happens when harmful things get into the air, water, and land around us. It can be from factories, cars, or even how we throw away our trash. Pollution is not good because it can make people and animals sick and can even change the weather. It’s not just a problem in one place – it’s everywhere, and it affects the whole world. In this essay, we’re going to talk about the different kinds of pollution, where it comes from, and why we all need to work together to make things better for our planet.

CBSE Class 10 Toppers List 2024 

Short Essay on Pollution

Below, we present concise and comprehensive essays on pollution in English to enhance your understanding. Upon reviewing these essays, you will gain insights into the definition of pollution, its primary causes, methods for prevention, and more. These resources can prove valuable for your academic assignments, such as essay writing, speech delivery, or paragraph composition in school or college.

CBSE Admit Card 2024 Out

Essay on Pollution in 100 Words

Pollution happens when harmful stuff gets into nature and makes things bad. There are different kinds of pollution like dirty air, dirty water, dirty soil, too much noise, and too much light. The sources of pollution are diverse, ranging from industrial activities to household waste. Pollution has severe consequences on ecosystems, human health, and the overall well-being of our planet. Addressing pollution is a collective responsibility that requires global awareness and sustainable practices. Governments play a crucial role in enforcing regulations, promoting renewable energy sources, and raising awareness about the importance of environmental conservation.

CBSE Result 2024

Essay on Pollution in 150 Words

Pollution is a pressing environmental issue affecting our planet. It occurs when harmful substances contaminate the air, water, or soil. The primary sources of pollution include industrial activities, vehicle emissions, improper waste disposal, and deforestation. Air pollution, caused by the release of pollutants into the atmosphere, leads to respiratory problems and climate change. Water pollution, resulting from the discharge of chemicals and waste into water bodies, poses a threat to aquatic life and human health.

Soil pollution occurs when pollutants, such as pesticides and industrial waste, degrade the quality of soil, impacting plant growth and food safety. Noise pollution, caused by excessive noise from various sources, can lead to stress and hearing loss. Light pollution disrupts natural ecosystems and affects wildlife behavior. To address pollution, individuals must adopt sustainable practices, industries must implement cleaner technologies, and governments must enforce stringent environmental regulations.

CBSE Class 12th Toppers List 2024 OUT

Essay on Pollution in 200 Words

Pollution is a global challenge that poses a threat to the health of our planet and its inhabitants. It manifests in various forms, including air, water, soil, noise, and light pollution. The consequences of pollution are far-reaching, affecting ecosystems, biodiversity, and human well-being. Industrial activities, urbanization, and improper waste management contribute significantly to pollution.

Air pollution, caused by the release of pollutants into the atmosphere, leads to respiratory diseases, climate change, and environmental degradation. Water pollution results from the discharge of chemicals, sewage, and industrial waste into rivers, lakes, and oceans, harming aquatic life and contaminating drinking water sources. Soil pollution occurs when pollutants like pesticides and heavy metals degrade the quality of soil, affecting plant growth and food safety.

Noise pollution, generated by traffic, industrial machinery, and other human activities, can have adverse effects on human health, causing stress, sleep disturbances, and hearing loss. Light pollution, caused by excessive artificial light in urban areas, disrupts natural ecosystems and interferes with the behavior of nocturnal animals.

Addressing pollution requires collective efforts at individual, community, and governmental levels. Individuals can contribute by adopting eco-friendly practices, reducing waste, and using sustainable modes of transportation. Industries must invest in cleaner technologies and adhere to strict environmental standards. 

Long Essay on Pollution 

Pollution is a complex and multifaceted environmental issue that poses a significant threat to the sustainability of our planet. It is the introduction of contaminants into the natural environment, resulting in adverse changes that affect ecosystems, biodiversity, and human health. Pollution can take various forms, including air pollution, water pollution, soil pollution, noise pollution, and light pollution, each with its unique set of challenges and consequences.

Sources of Pollution

The sources of pollution are diverse and often interconnected. Industrial activities, urbanization, transportation, agriculture, and improper waste management contribute significantly to the release of pollutants into the environment. Industrial processes emit a variety of pollutants, including greenhouse gases, particulate matter, and toxic chemicals, which can have detrimental effects on air quality and contribute to climate change.

Vehicle emissions, stemming from the burning of fossil fuels, release pollutants such as carbon monoxide, nitrogen oxides, and particulate matter into the atmosphere, contributing to air pollution and respiratory diseases. Improper disposal of waste, both solid and liquid, contaminates water bodies and soil, posing threats to aquatic life, plant health, and food safety.

Agricultural practices, including the use of pesticides and fertilizers, contribute to soil and water pollution, affecting both the environment and human health. Deforestation and urbanization disrupt natural ecosystems, leading to habitat loss and the displacement of wildlife. Noise pollution, resulting from human activities such as traffic, construction, and industrial processes, can have adverse effects on human health, causing stress, sleep disturbances, and hearing loss.

Consequences of Pollution

The consequences of pollution are severe and far-reaching. Air pollution is a major contributor to respiratory diseases, including asthma and chronic obstructive pulmonary disease (COPD). Long-term exposure to air pollutants such as particulate matter and nitrogen dioxide has been linked to cardiovascular diseases and adverse pregnancy outcomes.

Water pollution poses threats to aquatic life and human health. Contaminated water sources can lead to the spread of waterborne diseases, affecting millions of people globally. Soil pollution affects plant growth and food safety, as pollutants like pesticides and heavy metals accumulate in the soil and enter the food chain.

Noise pollution can have physiological and psychological effects, causing stress, sleep disturbances, and an increased risk of cardiovascular diseases. Light pollution disrupts natural ecosystems and interferes with the behavior of nocturnal animals, affecting their reproductive patterns and migration.

Global Impact

Pollution is not confined to local or regional boundaries; it has a global impact. Greenhouse gas emissions, primarily from the burning of fossil fuels, contribute to global warming and climate change. The rise in global temperatures leads to melting ice caps, rising sea levels, and extreme weather events, posing threats to unsafe ecosystems and communities.

The pollution of oceans with plastic waste has become a global crisis, with millions of tons of plastic entering the oceans annually. This not only harms marine life but also affects human health, as microplastics enter the food chain through seafood consumption.

Loss of biodiversity is another consequence of pollution, as ecosystems are disrupted and species face habitat destruction and pollution-induced stress. The decline of pollinators, such as bees, due to exposure to pesticides, has implications for agriculture and food security.

Addressing Pollution

Addressing pollution requires a comprehensive and collaborative approach at individual, community, and governmental levels. Individuals can contribute by adopting sustainable practices in their daily lives, such as reducing energy consumption, using eco-friendly products, and practicing responsible waste disposal.

Communities can organize clean-up initiatives, promote recycling programs, and raise awareness about the importance of environmental conservation. Educational institutions play a crucial role in fostering environmental awareness and sustainability practices among students.

Governments must enact and enforce stringent environmental regulations to curb pollution. Incentives for industries to adopt cleaner technologies, invest in renewable energy sources, and implement sustainable waste management practices are essential. International cooperation is crucial to address global environmental challenges, with countries working together to reduce greenhouse gas emissions, combat plastic pollution, and protect biodiversity.

Essay on Pollution in 800 Words

Pollution, the presence of unwanted substances known as pollutants in the environment, poses an immediate and severe threat to the delicate balance of our ecosystems. The recognition of the urgent need to address pollution is essential if we are to preserve the Earth and its biodiversity. This essay explores the various facets of pollution, its types, and the impact it has on major Indian cities such as Delhi, Noida, Ghaziabad, Lucknow, and Varanasi.

What is Pollution?

Pollution occurs when external compounds, primarily generated by human activities, enter the environment as unwanted entities known as pollutants. These pollutants cause significant harm to the environment, affecting water bodies, air, flora, and fauna. The consequences of pollution extend globally, contributing to phenomena like the greenhouse gas effect, global warming, and acid rain.

Effects of Pollution on Major Indian Cities

Imagine bustling cities in India, like Delhi or Varanasi, filled with life and energy. However, there’s a problem casting a shadow over this vibrancy – pollution. In this exploration, we’re going to look at how pollution affects the air, water, and soil in cities such as Delhi, Noida, Ghaziabad, Lucknow, and Varanasi. The goal is to understand the challenges these cities face and why it’s so important for everyone to work together to tackle pollution and ensure a healthier future.

Pollution Level in Delhi

Delhi, the National Capital Territory, faces a dire situation in terms of air quality index (AQI). According to the World Health Organization, Delhi ranks lowest among 1650 major cities worldwide. The air quality, especially during the winter months from October to December, rapidly deteriorates, reaching hazardous levels.

The AQI for Delhi remains moderate (101-200) from January to September but spikes during winter, often surpassing 500. Particulate Matter (PM2.5 and PM10) levels soar well beyond safe limits, primarily due to factors such as vehicular emissions, industrial activities, and the traditional practice of burning paddy crop roots in neighboring states.

Pollution Level in Noida

Noida, bordering Delhi in western Uttar Pradesh, faces similar challenges with poor air quality. Intensive construction activities, heavy vehicular pollution, and cold winter air contribute to the formation of a thick smog, impacting the Air Quality Index. The PM levels in Noida compete with Delhi, often reaching hazardous levels during the winter months.

Pollution Level in Ghaziabad

Ghaziabad frequently tops the list of North Indian cities with the worst AQI and pollution levels. Industrial pollution and waste burning are major contributors to Ghaziabad’s poor air quality. Located on the outskirts of the city, industries emit dense smoke, exacerbating pollution. The PM10 levels in Ghaziabad often surpass permissible limits, reaching alarming levels, especially during festivals like Diwali.

Pollution Level in Lucknow

Lucknow, the capital of Uttar Pradesh, experiences fluctuating AQI levels, ranging from moderate to poor. While not as severe as Delhi NCR, the air quality in Lucknow is still alarming, demanding concrete action. The quantity of suspended Particulate Matter has increased significantly in residential areas, posing health risks. The city’s air contains fine PM2.5 particles, reaching hazardous concentrations.

Pollution Level in Varanasi

Varanasi, the ancient pilgrimage city and the parliamentary constituency of Indian Prime Minister Narendra Modi, faces environmental challenges due to ongoing construction activities. Varanasi’s AQI is ranked third on the World Health Organization’s list of the fifteen most polluted cities globally. The ongoing construction work contributes to a decline in air quality, with AQI reaching up to 300, falling in the “Poor” category. Particulate Matter, especially PM2.5, poses health risks to the city’s residents.

The impacts of pollution are profound, impacting ecosystems, biodiversity, and the well-being of humans. Prolonged exposure to air pollutants is associated with cardiovascular diseases, while contaminated water sources contribute to the spread of waterborne diseases. Soil pollution poses risks to food safety, and noise pollution leads to stress and hearing loss. Additionally, light pollution disrupts wildlife behavior.

Importantly, pollution transcends local boundaries; its consequences are felt globally. Greenhouse gas emissions contribute significantly to global warming, causing adverse effects on climate patterns. The accumulation of plastic waste in oceans not only harms marine life but also infiltrates the food chain, posing threats to human health. Furthermore, pollution-induced stress and habitat destruction contribute to the loss of biodiversity, impacting ecosystems on a global scale.

Stringent environmental regulations need to be implemented and enforced by governments to combat pollution effectively. Offering incentives to industries for adopting cleaner technologies, investing in renewable energy sources, and practicing sustainable waste management is vital. International cooperation is essential to tackle global environmental challenges, with countries collaborating to decrease greenhouse gas emissions, combat plastic pollution, and safeguard biodiversity.

Pollution remains a pressing issue affecting major Indian cities, with severe implications for the environment and public health. The need for immediate and concerted efforts to address pollution is evident, as evidenced by the deteriorating air quality in cities like Delhi, Noida, Ghaziabad, Lucknow, and Varanasi. It is imperative that governments, industries, and individuals collaborate to adopt sustainable practices, enforce regulations, and invest in technologies that mitigate the environmental impact. Only through collective action can we hope to mitigate the menace of pollution and ensure a healthier and sustainable future for our planet.

Pollution is a critical environmental issue that demands urgent attention and concerted efforts at local, national, and global levels. The consequences of pollution are profound, affecting ecosystems, biodiversity, and human health. It is imperative that individuals, communities, industries, and governments work together to adopt sustainable practices, enforce regulations, and invest in technologies that minimize the environmental impact.

The battle against pollution requires a shift in mindset, where environmental sustainability becomes a priority in decision-making processes. By addressing pollution, we not only protect the health of our planet but also ensure a better quality of life for current and future generations. It is a collective responsibility to preserve the beauty and diversity of our natural environment and create a sustainable and harmonious coexistence between human activities and the ecosystems that support life on Earth.

Essay on Pollution FAQs

Pollution is the introduction of contaminants into the natural environment, leading to adverse changes. It can take various forms, including air, water, soil, noise, and light pollution.

Primary sources of pollution include industrial activities, vehicle emissions, improper waste disposal, deforestation, and agricultural practices that involve the use of pesticides and fertilizers.

Pollution has severe consequences on ecosystems, biodiversity, and human health. It can lead to respiratory diseases, waterborne illnesses, soil degradation, habitat loss, and disruptions in wildlife behavior.

Air pollution can cause respiratory diseases such as asthma and chronic obstructive pulmonary disease (COPD). Long-term exposure to air pollutants is linked to cardiovascular diseases and adverse pregnancy outcomes.

Water pollution occurs when chemicals and waste are discharged into water bodies. It poses a threat to aquatic life by contaminating their habitats and disrupting ecosystems. It can also affect human health through the consumption of contaminated water.

Environment Essay In English For School Students

Morning Walk Essay in English For School Students

.st1{display:none} Related Articles

• JKBOSE 12th Result 2024 Declared, Check @jkbose.nic.in
• CBSE Finds Variation Between Theory and Practical Marks, Issues Wrning to Schools
• Career Options After 12 PCB, How to Choose High-Salary Courses?
• JKBOSE 10th 12th Results 2024 Declared Download
• NCERT Solutions For Class 8 Science Chapter 1 Crop Production and Management
• NCERT Solutions For Class 8 Social Science History Chapter 2
• NCERT Solutions for Class 8 Social Science History Chapter Wise Notes
• TN DTE Result 2024 Declared @dte.tn.gov.in Direct Link to Download
• TS Inter Reverification Results 2024 Declared Now Check Here
• CBSE Class 7 Geography Notes Chapter 5 Water PDF Download

Russell Millner/Alamy

Defend Our Planet and Most Vulnerable Species

Your donation today will be triple-matched to power NRDC’s next great chapter in protecting our ecosystems and saving imperiled wildlife.

Water Pollution: Everything You Need to Know

Our rivers, reservoirs, lakes, and seas are drowning in chemicals, waste, plastic, and other pollutants. Here’s why—and what you can do to help.

• Share this page block

What is water pollution?

What are the causes of water pollution, categories of water pollution, what are the effects of water pollution, what can you do to prevent water pollution.

Water pollution occurs when harmful substances—often chemicals or microorganisms—contaminate a stream, river, lake, ocean, aquifer, or other body of water, degrading water quality and rendering it toxic to humans or the environment.

This widespread problem of water pollution is jeopardizing our health. Unsafe water kills more people each year than war and all other forms of violence combined. Meanwhile, our drinkable water sources are finite: Less than 1 percent of the earth’s freshwater is actually accessible to us. Without action, the challenges will only increase by 2050, when global demand for freshwater is expected to be one-third greater than it is now.

Water is uniquely vulnerable to pollution. Known as a “universal solvent,” water is able to dissolve more substances than any other liquid on earth. It’s the reason we have Kool-Aid and brilliant blue waterfalls. It’s also why water is so easily polluted. Toxic substances from farms, towns, and factories readily dissolve into and mix with it, causing water pollution.

Here are some of the major sources of water pollution worldwide:

Agricultural

Toxic green algae in Copco Reservoir, northern California

Aurora Photos/Alamy

Not only is the agricultural sector the biggest consumer of global freshwater resources, with farming and livestock production using about 70 percent of the earth’s surface water supplies , but it’s also a serious water polluter. Around the world, agriculture is the leading cause of water degradation. In the United States, agricultural pollution is the top source of contamination in rivers and streams, the second-biggest source in wetlands, and the third main source in lakes. It’s also a major contributor of contamination to estuaries and groundwater. Every time it rains, fertilizers, pesticides, and animal waste from farms and livestock operations wash nutrients and pathogens—such bacteria and viruses—into our waterways. Nutrient pollution , caused by excess nitrogen and phosphorus in water or air, is the number-one threat to water quality worldwide and can cause algal blooms , a toxic soup of blue-green algae that can be harmful to people and wildlife.

Sewage and wastewater

Used water is wastewater. It comes from our sinks, showers, and toilets (think sewage) and from commercial, industrial, and agricultural activities (think metals, solvents, and toxic sludge). The term also includes stormwater runoff , which occurs when rainfall carries road salts, oil, grease, chemicals, and debris from impermeable surfaces into our waterways

More than 80 percent of the world’s wastewater flows back into the environment without being treated or reused, according to the United Nations; in some least-developed countries, the figure tops 95 percent. In the United States, wastewater treatment facilities process about 34 billion gallons of wastewater per day . These facilities reduce the amount of pollutants such as pathogens, phosphorus, and nitrogen in sewage, as well as heavy metals and toxic chemicals in industrial waste, before discharging the treated waters back into waterways. That’s when all goes well. But according to EPA estimates, our nation’s aging and easily overwhelmed sewage treatment systems also release more than 850 billion gallons of untreated wastewater each year.

Oil pollution

Big spills may dominate headlines, but consumers account for the vast majority of oil pollution in our seas, including oil and gasoline that drips from millions of cars and trucks every day. Moreover, nearly half of the estimated 1 million tons of oil that makes its way into marine environments each year comes not from tanker spills but from land-based sources such as factories, farms, and cities. At sea, tanker spills account for about 10 percent of the oil in waters around the world, while regular operations of the shipping industry—through both legal and illegal discharges—contribute about one-third. Oil is also naturally released from under the ocean floor through fractures known as seeps.

Radioactive substances

Radioactive waste is any pollution that emits radiation beyond what is naturally released by the environment. It’s generated by uranium mining, nuclear power plants, and the production and testing of military weapons, as well as by universities and hospitals that use radioactive materials for research and medicine. Radioactive waste can persist in the environment for thousands of years, making disposal a major challenge. Consider the decommissioned Hanford nuclear weapons production site in Washington, where the cleanup of 56 million gallons of radioactive waste is expected to cost more than $100 billion and last through 2060. Accidentally released or improperly disposed of contaminants threaten groundwater, surface water, and marine resources.

To address pollution and protect water we need to understand where the pollution is coming from (point source or nonpoint source) and the type of water body its impacting (groundwater, surface water, or ocean water).

Where is the pollution coming from?

Point source pollution.

When contamination originates from a single source, it’s called point source pollution. Examples include wastewater (also called effluent) discharged legally or illegally by a manufacturer, oil refinery, or wastewater treatment facility, as well as contamination from leaking septic systems, chemical and oil spills, and illegal dumping. The EPA regulates point source pollution by establishing limits on what can be discharged by a facility directly into a body of water. While point source pollution originates from a specific place, it can affect miles of waterways and ocean.

Nonpoint source

Nonpoint source pollution is contamination derived from diffuse sources. These may include agricultural or stormwater runoff or debris blown into waterways from land. Nonpoint source pollution is the leading cause of water pollution in U.S. waters, but it’s difficult to regulate, since there’s no single, identifiable culprit.

Transboundary

It goes without saying that water pollution can’t be contained by a line on a map. Transboundary pollution is the result of contaminated water from one country spilling into the waters of another. Contamination can result from a disaster—like an oil spill—or the slow, downriver creep of industrial, agricultural, or municipal discharge.

What type of water is being impacted?

Groundwater pollution.

When rain falls and seeps deep into the earth, filling the cracks, crevices, and porous spaces of an aquifer (basically an underground storehouse of water), it becomes groundwater—one of our least visible but most important natural resources. Nearly 40 percent of Americans rely on groundwater, pumped to the earth’s surface, for drinking water. For some folks in rural areas, it’s their only freshwater source. Groundwater gets polluted when contaminants—from pesticides and fertilizers to waste leached from landfills and septic systems—make their way into an aquifer, rendering it unsafe for human use. Ridding groundwater of contaminants can be difficult to impossible, as well as costly. Once polluted, an aquifer may be unusable for decades, or even thousands of years. Groundwater can also spread contamination far from the original polluting source as it seeps into streams, lakes, and oceans.

Surface water pollution

Covering about 70 percent of the earth, surface water is what fills our oceans, lakes, rivers, and all those other blue bits on the world map. Surface water from freshwater sources (that is, from sources other than the ocean) accounts for more than 60 percent of the water delivered to American homes. But a significant pool of that water is in peril. According to the most recent surveys on national water quality from the U.S. Environmental Protection Agency, nearly half of our rivers and streams and more than one-third of our lakes are polluted and unfit for swimming, fishing, and drinking. Nutrient pollution, which includes nitrates and phosphates, is the leading type of contamination in these freshwater sources. While plants and animals need these nutrients to grow, they have become a major pollutant due to farm waste and fertilizer runoff. Municipal and industrial waste discharges contribute their fair share of toxins as well. There’s also all the random junk that industry and individuals dump directly into waterways.

Ocean water pollution

Eighty percent of ocean pollution (also called marine pollution) originates on land—whether along the coast or far inland. Contaminants such as chemicals, nutrients, and heavy metals are carried from farms, factories, and cities by streams and rivers into our bays and estuaries; from there they travel out to sea. Meanwhile, marine debris— particularly plastic —is blown in by the wind or washed in via storm drains and sewers. Our seas are also sometimes spoiled by oil spills and leaks—big and small—and are consistently soaking up carbon pollution from the air. The ocean absorbs as much as a quarter of man-made carbon emissions .

On human health

To put it bluntly: Water pollution kills. In fact, it caused 1.8 million deaths in 2015, according to a study published in The Lancet . Contaminated water can also make you ill. Every year, unsafe water sickens about 1 billion people. And low-income communities are disproportionately at risk because their homes are often closest to the most polluting industries.

Waterborne pathogens, in the form of disease-causing bacteria and viruses from human and animal waste, are a major cause of illness from contaminated drinking water . Diseases spread by unsafe water include cholera, giardia, and typhoid. Even in wealthy nations, accidental or illegal releases from sewage treatment facilities, as well as runoff from farms and urban areas, contribute harmful pathogens to waterways. Thousands of people across the United States are sickened every year by Legionnaires’ disease (a severe form of pneumonia contracted from water sources like cooling towers and piped water), with cases cropping up from California’s Disneyland to Manhattan’s Upper East Side.

A woman using bottled water to wash her three-week-old son at their home in Flint, Michigan

Todd McInturf/The Detroit News/AP

Meanwhile, the plight of residents in Flint, Michigan —where cost-cutting measures and aging water infrastructure created a lead contamination crisis—offers a stark look at how dangerous chemical and other industrial pollutants in our water can be. The problem goes far beyond Flint and involves much more than lead, as a wide range of chemical pollutants—from heavy metals such as arsenic and mercury to pesticides and nitrate fertilizers —are getting into our water supplies. Once they’re ingested, these toxins can cause a host of health issues, from cancer to hormone disruption to altered brain function. Children and pregnant women are particularly at risk.

Even swimming can pose a risk. Every year, 3.5 million Americans contract health issues such as skin rashes, pinkeye, respiratory infections, and hepatitis from sewage-laden coastal waters, according to EPA estimates.

On the environment

In order to thrive, healthy ecosystems rely on a complex web of animals, plants, bacteria, and fungi—all of which interact, directly or indirectly, with each other. Harm to any of these organisms can create a chain effect, imperiling entire aquatic environments.

When water pollution causes an algal bloom in a lake or marine environment, the proliferation of newly introduced nutrients stimulates plant and algae growth, which in turn reduces oxygen levels in the water. This dearth of oxygen, known as eutrophication , suffocates plants and animals and can create “dead zones,” where waters are essentially devoid of life. In certain cases, these harmful algal blooms can also produce neurotoxins that affect wildlife, from whales to sea turtles.

Chemicals and heavy metals from industrial and municipal wastewater contaminate waterways as well. These contaminants are toxic to aquatic life—most often reducing an organism’s life span and ability to reproduce—and make their way up the food chain as predator eats prey. That’s how tuna and other big fish accumulate high quantities of toxins, such as mercury.

Marine ecosystems are also threatened by marine debris , which can strangle, suffocate, and starve animals. Much of this solid debris, such as plastic bags and soda cans, gets swept into sewers and storm drains and eventually out to sea, turning our oceans into trash soup and sometimes consolidating to form floating garbage patches. Discarded fishing gear and other types of debris are responsible for harming more than 200 different species of marine life.

Meanwhile, ocean acidification is making it tougher for shellfish and coral to survive. Though they absorb about a quarter of the carbon pollution created each year by burning fossil fuels, oceans are becoming more acidic. This process makes it harder for shellfish and other species to build shells and may impact the nervous systems of sharks, clownfish, and other marine life.

With your actions

We’re all accountable to some degree for today’s water pollution problem. Fortunately, there are some simple ways you can prevent water contamination or at least limit your contribution to it:

• Learn about the unique qualities of water where you live . Where does your water come from? Is the wastewater from your home treated? Where does stormwater flow to? Is your area in a drought? Start building a picture of the situation so you can discover where your actions will have the most impact—and see if your neighbors would be interested in joining in!
• Reduce your plastic consumption and reuse or recycle plastic when you can.
• Properly dispose of chemical cleaners, oils, and nonbiodegradable items to keep them from going down the drain.
• Maintain your car so it doesn’t leak oil, antifreeze, or coolant.
• If you have a yard, consider landscaping that reduces runoff and avoid applying pesticides and herbicides .
• Don’t flush your old medications! Dispose of them in the trash to prevent them from entering local waterways.
• Be mindful of anything you pour into storm sewers, since that waste often won’t be treated before being released into local waterways. If you notice a storm sewer blocked by litter, clean it up to keep that trash out of the water. (You’ll also help prevent troublesome street floods in a heavy storm.)
• If you have a pup, be sure to pick up its poop .

With your voice

One of the most effective ways to stand up for our waters is to speak out in support of the Clean Water Act, which has helped hold polluters accountable for five decades—despite attempts by destructive industries to gut its authority. But we also need regulations that keep pace with modern-day challenges, including microplastics, PFAS , pharmaceuticals, and other contaminants our wastewater treatment plants weren’t built to handle, not to mention polluted water that’s dumped untreated.

Tell the federal government, the U.S. Army Corps of Engineers, and your local elected officials that you support water protections and investments in infrastructure, like wastewater treatment, lead-pipe removal programs, and stormwater-abating green infrastructure. Also, learn how you and those around you can get involved in the policymaking process . Our public waterways serve every one of us. We should all have a say in how they’re protected.

This story was originally published on May 14, 2018, and has been updated with new information and links.

This NRDC.org story is available for online republication by news media outlets or nonprofits under these conditions: The writer(s) must be credited with a byline; you must note prominently that the story was originally published by NRDC.org and link to the original; the story cannot be edited (beyond simple things such as grammar); you can’t resell the story in any form or grant republishing rights to other outlets; you can’t republish our material wholesale or automatically—you need to select stories individually; you can’t republish the photos or graphics on our site without specific permission; you should drop us a note to let us know when you’ve used one of our stories.

Related Stories

​​The Smart Seafood and Sustainable Fish Buying Guide

How to Become a Community Scientist

How to Start Saving the Planet in 100 Days: the Joe Biden Edition

When you sign up, you’ll become a member of NRDC’s Activist Network. We will keep you informed with the latest alerts and progress reports.

Talk to our experts

1800-120-456-456

• Air Pollution Essay

Essay on Air Pollution

Environmental changes are caused by the natural or artificial content of harmful pollutants and can cause instability, disturbance, or adverse effects on the ecosystem. Earth and its environment pose a more serious threat due to the increasing pollution of air, water, and soil. Environmental damage is caused by improper resource management or careless human activities. Therefore, any activity that violates the original nature of the environment and leads to degradation is called pollution. We need to understand the origin of these pollutants and find ways to control pollution. This can also be done by raising awareness of the effects of pollutants.

Air pollution is any physical, chemical, or biological change in the air. A certain percentage of the gas is present in the atmosphere. Increasing or decreasing the composition of these gasses is detrimental to survival. This imbalance in gas composition causes an increase in global temperature which is called global warming.

Introduction to air pollution 

The Earth and its environment are facing a serious threat by the increasing pollution of the air, water, and soil—the vital life support systems of the Earth. The damage to the environment is caused by improper management of resources or by careless human activity. Hence any activity that violates the original character of nature and leads to its degradation is called pollution. We need to understand the sources of these pollutants and find ways to control pollution. This can be also done by making people aware of the effects of pollutants. 

Air with 78% Nitrogen, 21% Oxygen, and 1% of all other gasses support life on Earth. Various processes take place to sustain the regular percentage of gasses and their composition in general. 

Atmospheric pollution can have natural sources, for example, volcanic eruptions. The gaseous by-products of man-made processes such as energy production, waste incineration, transport, deforestation and agriculture, are the major air pollutants.

Although air is made up of mostly Oxygen and Nitrogen, mankind, through pollution, has increased the levels of many trace gasses, and in some cases, released completely new gasses to the atmosphere. 

Air pollution can result in poor air quality, both in cities and in the countryside. Some air pollutants make people sick, causing breathing problems and increasing the likelihood of cancer. 

Some air pollutants are harmful to plants, animals, and the ecosystems in which they live. Statues, monuments, and buildings are being corroded by the air pollutants in the form of acid rain. It also damages crops and forests, and makes lakes and streams unsuitable for fish and other plant and animal life. 

Air pollution created by man-made resources is also changing the Earth’s atmosphere. It is causing the depletion of the ozone layer and letting in more harmful radiation from the Sun. The greenhouse gasses released into the atmosphere prevents heat from escaping back into space and leads to a rise in global average temperatures. Global warming affects the average sea-level and increases the spread of tropical diseases.

Air pollution occurs when large amounts of gas and tiny particles are released into the air and the ecological balance is disturbed. Each year millions of tons of gasses and particulate matter are emitted into the air. 

Primary air pollutants are pollutants, which are directly released into the air. They are called SPM, i.e., Suspended Particulate Matter. For example, smoke, dust, ash, sulfur oxide, nitrogen oxide, and radioactive compounds, etc.

Secondary Pollutants are pollutants, which are formed due to chemical interactions between the atmospheric components and primary pollutants. For example, Smog (i.e. Smoke and fog), ozone, etc.

Major gaseous air pollutants include Carbon Dioxide, Hydrogen Sulfide, Sulfur Dioxide and Nitrogen Oxide, etc.

Natural sources are volcanic eruptions, forest fires, dust storms, etc. 

Man-made sources include gasses released from the automobiles, industries, burning of garbage and bricks kilns, etc.

Effects of Air Pollution on Human Health

Air pollution has adverse effects on human health. 

Breathing polluted air puts you at higher risk of asthma.

When exposed to ground ozone for 6 to 7 hours, people suffer from respiratory inflammation.

Damages the immune system, endocrine, and reproductive systems.

A high level of air pollution has been associated with higher incidents of heart problems.

The toxic chemicals released into the air are affecting the flora and fauna immensely.

Preventive Measures to Reduce Air Pollution

We can prevent pollution by utilizing raw materials, water energy, and other resources more efficiently. When less harmful substances are substituted for hazardous ones, and when toxic substances are eliminated from the production process, human health can be protected and economic wellbeing can be strengthened. 

There are several measures that can be adopted by people to reduce pollution and to save the environment.

Carpooling.

Promotion of public transport.

No smoking zone.

Restricted use of fossil fuels.

Saving energy.

Encouraging organic farming.

The government has put restrictions on the amount of fossil fuels that can be used as well as restrictions on how much carbon dioxide and other pollutants can be emitted. Although the government is attempting to save our environment from these harmful gasses, it is not sufficient. We as a society need to keep the environment clean by controlling the pollution of air.

FAQs on Air Pollution Essay

1. State the Causes of Air Pollution ?

The following are the causes of air pollution.

Vehicular pollution consisting of Carbon Monoxide causes pollution.

Emission of Nitrogen oxide by a large number of supersonic transport airplanes causes deterioration of the Ozone layer and also causes serious damage to the flora and fauna.

The release of Chlorofluorocarbons into the Stratosphere causes depletion of Ozone, which is a serious concern to animals, microscopic, and aquatic organisms.

Burning garbage causes smoke, which pollutes the atmosphere. This smoke contains harmful gases such as Carbon dioxide and Nitrogen oxides.

In India, brick kilns are used for many purposes and coal is used to burn the bricks. They give out huge quantities of Carbon dioxide and particulate matter such as smoke, dust that are very harmful to people working there and the areas surrounding it. 

Many cleansing agents release poisonous gases such as Ammonia and Chlorine into the atmosphere. 

Radioactive elements emit harmful rays into the air.

Decomposed animals and plants emit Methane and Ammonia gas into the air.

2. What Does Global Warming Mean?

Global warming is the gradual rising average temperature of the Earth's atmosphere due to the concentration of methane in certain toxic gasses such as carbon dioxide. This has a major impact on the world climate. The world is warming. The land and the sea are now warmer than they were at the beginning and temperatures are still rising. This rise in temperature is, in short, global warming. This temperature rise is man-made. The burning of fossil fuels releases greenhouse gasses into the atmosphere which capture solar heat and raise surface and air temperatures.

3. Name the Alternative Modes of Transport. In What Way Does it Help to Reduce Air Pollution?

Public transport could be an alternative mode of transport. Public transport like trains, buses and trams, can relieve traffic congestion and reduce air pollution from road transport. The use of public transport must be encouraged in order to develop a sustainable transport policy.

4. Mention other means of transportation! How can I help reduce air pollution?

Public transportation can be another mode of transportation. Public transport such as trains, buses and trams can reduce traffic congestion and reduce air pollution from road transport. The use of public transport and to develop sustainable transport policies should be encouraged. While one passenger vehicle has the convenience factor, other modes of transportation reduce travel costs, spend less time, reduce stress, improve health, and reduce energy consumption and parking. Other trips for work include walking/cycling, public transport, hybrid travel and transport.

5. What are the effects of pollution?

Excessive air pollution can increase the risk of heart attack, wheezing, coughing and difficulty breathing, as well as irritation of the eyes, nose and throat. Air pollution can also cause heart problems, asthma, and other lung problems. Due to the emission of greenhouse gases, the composition of the air in the air is disturbed. This causes an increase in global temperature. The damaging ozone layer due to air pollution does not prevent harmful ultraviolet rays from the sun, which cause skin and eye problems in individuals. Air pollution has caused a number of respiratory and heart diseases among people. The incidence of lung cancer has increased in recent decades. Children living in contaminated areas are more likely to develop pneumonia and asthma. Many people die every year due to the direct or indirect effects of air pollution. When burning fossil fuels, harmful gases such as nitrogen oxides and sulfur oxides are released into the air. Water droplets combine with these pollutants and become acidic and fall as acid rain, which harms human, animal and plant life.

6. What is the solution to air pollution?

Production of renewable fuels and clean energy. The basic solution to air pollution is to get away from fossil fuels and replace them with other energies such as solar, wind and geothermal. The government limits the amount of fossil fuel that can be used and how much carbon dioxide and other pollutants it can emit. While the government is trying to save our environment from this harmful gas, it is not enough. We as a society need to keep the environment clean by controlling air pollution. To more in detail about air pollution and its causes. To learn more about air pollution and its impact on the environment, visit the Vedantu website.

• Random article
• Teaching guide
• Privacy & cookies

Water pollution: an introduction

by Chris Woodford . Last updated: October 1, 2023.

O ver two thirds of Earth's surface is covered by water ; less than a third is taken up by land. As Earth's population continues to grow, people are putting ever-increasing pressure on the planet's water resources. In a sense, our oceans, rivers , and other inland waters are being "squeezed" by human activities—not so they take up less room, but so their quality is reduced. Poorer water quality means water pollution .

We know that pollution is a human problem because it is a relatively recent development in the planet's history: before the 19th century Industrial Revolution, people lived more in harmony with their immediate environment. As industrialization has spread around the globe, so the problem of pollution has spread with it. When Earth's population was much smaller, no one believed pollution would ever present a serious problem. It was once popularly believed that the oceans were far too big to pollute. Today, with around 7 billion people on the planet, it has become apparent that there are limits. Pollution is one of the signs that humans have exceeded those limits.

Photo: Stormwater pollution entering a river from a drain. Photo by Peter C Van Metre courtesy of US Geological Survey .

What is water pollution?

Water pollution can be defined in many ways. Usually, it means one or more substances have built up in water to such an extent that they cause problems for animals or people. Oceans, lakes, rivers, and other inland waters can naturally clean up a certain amount of pollution by dispersing it harmlessly. If you poured a cup of black ink into a river, the ink would quickly disappear into the river's much larger volume of clean water. The ink would still be there in the river, but in such a low concentration that you would not be able to see it. At such low levels, the chemicals in the ink probably would not present any real problem. However, if you poured gallons of ink into a river every few seconds through a pipe, the river would quickly turn black. The chemicals in the ink could very quickly have an effect on the quality of the water. This, in turn, could affect the health of all the plants, animals, and humans whose lives depend on the river.

Photo: Pollution means adding substances to the environment that don't belong there—like the air pollution from this smokestack. Pollution is not always as obvious as this, however.

Thus, water pollution is all about quantities : how much of a polluting substance is released and how big a volume of water it is released into. A small quantity of a toxic chemical may have little impact if it is spilled into the ocean from a ship. But the same amount of the same chemical can have a much bigger impact pumped into a lake or river, where there is less clean water to disperse it.

"The introduction by man, directly or indirectly, of substances or energy into the marine environment (including estuaries) resulting in such deleterious effects as harm to living resources, hazards to human health, hindrance to marine activities, including fishing, impairment of quality for use of sea water and reduction of amenities." [1]

What are the main types of water pollution?

When we think of Earth's water resources, we think of huge oceans, lakes, and rivers. Water resources like these are called surface waters . The most obvious type of water pollution affects surface waters. For example, a spill from an oil tanker creates an oil slick that can affect a vast area of the ocean.

Photo: Detergent pollution entering a river—an example of surface water pollution. Photo courtesy of US Fish & Wildlife Service Photo Library.

Not all of Earth's water sits on its surface, however. A great deal of water is held in underground rock structures known as aquifers, which we cannot see and seldom think about. Water stored underground in aquifers is known as groundwater . Aquifers feed our rivers and supply much of our drinking water. They too can become polluted, for example, when weed killers used in people's gardens drain into the ground. Groundwater pollution is much less obvious than surface-water pollution, but is no less of a problem. In 1996, a study in Iowa in the United States found that over half the state's groundwater wells were contaminated with weed killers. You might think things would have improved since then, but, two decades on, all that's really changed is the name of the chemicals we're using. Today, numerous scientific studies are still finding weed killers in groundwater in worrying quantities: a 2012 study discovered glyphosate in 41 percent of 140 groundwater samples from Catalonia, Spain; scientific opinion differs on whether this is safe or not. [2]

Surface waters and groundwater are the two types of water resources that pollution affects. There are also two different ways in which pollution can occur. If pollution comes from a single location, such as a discharge pipe attached to a factory, it is known as point-source pollution . Other examples of point source pollution include an oil spill from a tanker, a discharge from a smoke stack (factory chimney), or someone pouring oil from their car down a drain. A great deal of water pollution happens not from one single source but from many different scattered sources. This is called nonpoint-source pollution .

When point-source pollution enters the environment, the place most affected is usually the area immediately around the source. For example, when a tanker accident occurs, the oil slick is concentrated around the tanker itself and, in the right ocean conditions, the pollution disperses the further away from the tanker you go. This is less likely to happen with nonpoint source pollution which, by definition, enters the environment from many different places at once.

Sometimes pollution that enters the environment in one place has an effect hundreds or even thousands of miles away. This is known as transboundary pollution . One example is the way radioactive waste travels through the oceans from nuclear reprocessing plants in England and France to nearby countries such as Ireland and Norway.

How do we know when water is polluted?

Some forms of water pollution are very obvious: everyone has seen TV news footage of oil slicks filmed from helicopters flying overhead. Water pollution is usually less obvious and much harder to detect than this. But how can we measure water pollution when we cannot see it? How do we even know it's there?

There are two main ways of measuring the quality of water. One is to take samples of the water and measure the concentrations of different chemicals that it contains. If the chemicals are dangerous or the concentrations are too great, we can regard the water as polluted. Measurements like this are known as chemical indicators of water quality. Another way to measure water quality involves examining the fish, insects, and other invertebrates that the water will support. If many different types of creatures can live in a river, the quality is likely to be very good; if the river supports no fish life at all, the quality is obviously much poorer. Measurements like this are called biological indicators of water quality.

What are the causes of water pollution?

Most water pollution doesn't begin in the water itself. Take the oceans: around 80 percent of ocean pollution enters our seas from the land. [16] Virtually any human activity can have an effect on the quality of our water environment. When farmers fertilize the fields, the chemicals they use are gradually washed by rain into the groundwater or surface waters nearby. Sometimes the causes of water pollution are quite surprising. Chemicals released by smokestacks (chimneys) can enter the atmosphere and then fall back to earth as rain, entering seas, rivers, and lakes and causing water pollution. That's called atmospheric deposition . Water pollution has many different causes and this is one of the reasons why it is such a difficult problem to solve.

With billions of people on the planet, disposing of sewage waste is a major problem. According to 2017 figures from the World Health Organization, some 2 billion people (about a quarter of the world's population) don't have access to safe drinking water or the most basic sanitation, 3.4 billion (60 people of the population) lack "safely managed" sanitation (unshared, with waste properly treated). Although there have been great improvements in securing access to clean water, relatively little, genuine progress has been made on improving global sanitation in the last decade. [20] Sewage disposal affects people's immediate environments and leads to water-related illnesses such as diarrhea that kills 525,000 children under five each year. [3] (Back in 2002, the World Health Organization estimated that water-related diseases could kill as many as 135 million people by 2020; in 2019, the WHO was still estimating the annual death toll from poor water and sanitation at over 800,000 people a year.) In developed countries, most people have flush toilets that take sewage waste quickly and hygienically away from their homes.

Yet the problem of sewage disposal does not end there. When you flush the toilet, the waste has to go somewhere and, even after it leaves the sewage treatment works, there is still waste to dispose of. Sometimes sewage waste is pumped untreated into the sea. Until the early 1990s, around 5 million tons of sewage was dumped by barge from New York City each year. [4] According to 2002 figures from the UK government's Department for the Environment, Food, and Rural Affairs (DEFRA), the sewers of Britain collect around 11 billion liters of waste water every day; there are still 31,000 sewage overflow pipes through which, in certain circumstances, such as heavy storms, raw sewage is pumped untreated into the sea. [5] The New River that crosses the border from Mexico into California once carried with it 20–25 million gallons (76–95 million liters) of raw sewage each day; a new waste water plant on the US-Mexico border, completed in 2007, substantially solved that problem. [6] Unfortunately, even in some of the richest nations, the practice of dumping sewage into the sea continues. In early 2012, it was reported that the tiny island of Guernsey (between Britain and France) has decided to continue dumping 16,000 tons of raw sewage into the sea each day.

In theory, sewage is a completely natural substance that should be broken down harmlessly in the environment: 90 percent of sewage is water. [7] In practice, sewage contains all kinds of other chemicals, from the pharmaceutical drugs people take to the paper , plastic , and other wastes they flush down their toilets. When people are sick with viruses, the sewage they produce carries those viruses into the environment. It is possible to catch illnesses such as hepatitis, typhoid, and cholera from river and sea water.

Photo: Nutrients make crops grow, but cause pollution when they seep into rivers and other watercourses. Photo courtesy of US Department of Agriculture (Flickr) .

Suitably treated and used in moderate quantities, sewage can be a fertilizer: it returns important nutrients to the environment, such as nitrogen and phosphorus, which plants and animals need for growth. The trouble is, sewage is often released in much greater quantities than the natural environment can cope with. Chemical fertilizers used by farmers also add nutrients to the soil, which drain into rivers and seas and add to the fertilizing effect of the sewage. Together, sewage and fertilizers can cause a massive increase in the growth of algae or plankton that overwhelms huge areas of oceans, lakes, or rivers. This is known as a harmful algal bloom (also known as an HAB or red tide, because it can turn the water red). It is harmful because it removes oxygen from the water that kills other forms of life, leading to what is known as a dead zone . The Gulf of Mexico has one of the world's most spectacular dead zones. Each summer, according to studies by the NOAA , it typically grows to an area of around 5500–6500 square miles (14,000–16,800 square kilometers), which is about the same size as the state of Connecticut. [21]

Waste water

A few statistics illustrate the scale of the problem that waste water (chemicals washed down drains and discharged from factories) can cause. Around half of all ocean pollution is caused by sewage and waste water. Each year, the world generates perhaps 5–10 billion tons of industrial waste, much of which is pumped untreated into rivers, oceans, and other waterways. [8] In the United States alone, around 400,000 factories take clean water from rivers, and many pump polluted waters back in their place. However, there have been major improvements in waste water treatment recently. Since 1970, in the United States, the Environmental Protection Agency (EPA) has invested about $70 billion in improving water treatment plants that, as of 2021, serve around 90 percent of the US population (compared to just 69 percent in 1972). However, another $271 billion is still needed to update and upgrade the system. [15]

Factories are point sources of water pollution, but quite a lot of water is polluted by ordinary people from nonpoint sources; this is how ordinary water becomes waste water in the first place. Virtually everyone pours chemicals of one sort or another down their drains or toilets. Even detergents used in washing machines and dishwashers eventually end up in our rivers and oceans. So do the pesticides we use on our gardens. A lot of toxic pollution also enters waste water from highway runoff . Highways are typically covered with a cocktail of toxic chemicals—everything from spilled fuel and brake fluids to bits of worn tires (themselves made from chemical additives) and exhaust emissions. When it rains, these chemicals wash into drains and rivers. It is not unusual for heavy summer rainstorms to wash toxic chemicals into rivers in such concentrations that they kill large numbers of fish overnight. It has been estimated that, in one year, the highway runoff from a single large city leaks as much oil into our water environment as a typical tanker spill. Some highway runoff runs away into drains; others can pollute groundwater or accumulate in the land next to a road, making it increasingly toxic as the years go by.

Chemical waste

Detergents are relatively mild substances. At the opposite end of the spectrum are highly toxic chemicals such as polychlorinated biphenyls (PCBs) . They were once widely used to manufacture electronic circuit boards , but their harmful effects have now been recognized and their use is highly restricted in many countries. Nevertheless, an estimated half million tons of PCBs were discharged into the environment during the 20th century. [9] In a classic example of transboundary pollution, traces of PCBs have even been found in birds and fish in the Arctic. They were carried there through the oceans, thousands of miles from where they originally entered the environment. Although PCBs are widely banned, their effects will be felt for many decades because they last a long time in the environment without breaking down.

Another kind of toxic pollution comes from heavy metals , such as lead, cadmium, and mercury. Lead was once commonly used in gasoline (petrol), though its use is now restricted in some countries. Mercury and cadmium are still used in batteries (though some brands now use other metals instead). Until recently, a highly toxic chemical called tributyltin (TBT) was used in paints to protect boats from the ravaging effects of the oceans. Ironically, however, TBT was gradually recognized as a pollutant: boats painted with it were doing as much damage to the oceans as the oceans were doing to the boats.

The best known example of heavy metal pollution in the oceans took place in 1938 when a Japanese factory discharged a significant amount of mercury metal into Minamata Bay, contaminating the fish stocks there. It took a decade for the problem to come to light. By that time, many local people had eaten the fish and around 2000 were poisoned. Hundreds of people were left dead or disabled. [10]

Radioactive waste

People view radioactive waste with great alarm—and for good reason. At high enough concentrations it can kill; in lower concentrations it can cause cancers and other illnesses. The biggest sources of radioactive pollution in Europe are two factories that reprocess waste fuel from nuclear power plants : Sellafield on the north-west coast of Britain and Cap La Hague on the north coast of France. Both discharge radioactive waste water into the sea, which ocean currents then carry around the world. Countries such as Norway, which lie downstream from Britain, receive significant doses of radioactive pollution from Sellafield. [19] The Norwegian government has repeatedly complained that Sellafield has increased radiation levels along its coast by 6–10 times. Both the Irish and Norwegian governments continue to press for the plant's closure. [11]

Oil pollution

Photo: Oil-tanker spills are the most spectacular forms of pollution and the ones that catch public attention, but only a fraction of all water pollution happens this way. Photo by Lamar Gore courtesy of US Fish & Wildlife Service Photo Library and US National Archive .

When we think of ocean pollution, huge black oil slicks often spring to mind, yet these spectacular accidents represent only a tiny fraction of all the pollution entering our oceans. Even considering oil by itself, tanker spills are not as significant as they might seem: only 12 percent of the oil that enters the oceans comes from tanker accidents; over 70 percent of oil pollution at sea comes from routine shipping and from the oil people pour down drains on land. [12] However, what makes tanker spills so destructive is the sheer quantity of oil they release at once — in other words, the concentration of oil they produce in one very localized part of the marine environment. The biggest oil spill in recent years (and the biggest ever spill in US waters) occurred when the tanker Exxon Valdez broke up in Prince William Sound in Alaska in 1989. Around 12 million gallons (44 million liters) of oil were released into the pristine wilderness—enough to fill your living room 800 times over! Estimates of the marine animals killed in the spill vary from approximately 1000 sea otters and 34,000 birds to as many as 2800 sea otters and 250,000 sea birds. Several billion salmon and herring eggs are also believed to have been destroyed. [13]

If you've ever taken part in a community beach clean, you'll know that plastic is far and away the most common substance that washes up with the waves. There are three reasons for this: plastic is one of the most common materials, used for making virtually every kind of manufactured object from clothing to automobile parts; plastic is light and floats easily so it can travel enormous distances across the oceans; most plastics are not biodegradable (they do not break down naturally in the environment), which means that things like plastic bottle tops can survive in the marine environment for a long time. (A plastic bottle can survive an estimated 450 years in the ocean and plastic fishing line can last up to 600 years.)

While plastics are not toxic in quite the same way as poisonous chemicals, they nevertheless present a major hazard to seabirds, fish, and other marine creatures. For example, plastic fishing lines and other debris can strangle or choke fish. (This is sometimes called ghost fishing .) About half of all the world's seabird species are known to have eaten plastic residues. In one study of 450 shearwaters in the North Pacific, over 80 percent of the birds were found to contain plastic residues in their stomachs. In the early 1990s, marine scientist Tim Benton collected debris from a 2km (1.5 mile) length of beach in the remote Pitcairn islands in the South Pacific. His study recorded approximately a thousand pieces of garbage including 268 pieces of plastic, 71 plastic bottles, and two dolls heads. [14]

Alien species

Most people's idea of water pollution involves things like sewage, toxic metals, or oil slicks, but pollution can be biological as well as chemical. In some parts of the world, alien species are a major problem. Alien species (sometimes known as invasive species ) are animals or plants from one region that have been introduced into a different ecosystem where they do not belong. Outside their normal environment, they have no natural predators, so they rapidly run wild, crowding out the usual animals or plants that thrive there. Common examples of alien species include zebra mussels in the Great Lakes of the USA, which were carried there from Europe by ballast water (waste water flushed from ships ). The Mediterranean Sea has been invaded by a kind of alien algae called Caulerpa taxifolia . In the Black Sea, an alien jellyfish called Mnemiopsis leidyi reduced fish stocks by 90 percent after arriving in ballast water. In San Francisco Bay, Asian clams called Potamocorbula amurensis, also introduced by ballast water, have dramatically altered the ecosystem. In 1999, Cornell University's David Pimentel estimated that alien invaders like this cost the US economy $123 billion a year; in 2014, the European Commission put the cost to Europe at €12 billion a year and "growing all the time. [18]

Other forms of pollution

These are the most common forms of pollution—but by no means the only ones. Heat or thermal pollution from factories and power plants also causes problems in rivers. By raising the temperature, it reduces the amount of oxygen dissolved in the water, thus also reducing the level of aquatic life that the river can support. Another type of pollution involves the disruption of sediments (fine-grained powders) that flow from rivers into the sea. Dams built for hydroelectric power or water reservoirs can reduce the sediment flow. This reduces the formation of beaches, increases coastal erosion (the natural destruction of cliffs by the sea), and reduces the flow of nutrients from rivers into seas (potentially reducing coastal fish stocks). Increased sediments can also present a problem. During construction work, soil, rock, and other fine powders sometimes enters nearby rivers in large quantities, causing it to become turbid (muddy or silted). The extra sediment can block the gills of fish, effectively suffocating them. Construction firms often now take precautions to prevent this kind of pollution from happening.

What are the effects of water pollution?

Some people believe pollution is an inescapable result of human activity: they argue that if we want to have factories, cities, ships, cars, oil, and coastal resorts, some degree of pollution is almost certain to result. In other words, pollution is a necessary evil that people must put up with if they want to make progress. Fortunately, not everyone agrees with this view. One reason people have woken up to the problem of pollution is that it brings costs of its own that undermine any economic benefits that come about by polluting.

Take oil spills, for example. They can happen if tankers are too poorly built to survive accidents at sea. But the economic benefit of compromising on tanker quality brings an economic cost when an oil spill occurs. The oil can wash up on nearby beaches, devastate the ecosystem, and severely affect tourism. The main problem is that the people who bear the cost of the spill (typically a small coastal community) are not the people who caused the problem in the first place (the people who operate the tanker). Yet, arguably, everyone who puts gasoline (petrol) into their car—or uses almost any kind of petroleum-fueled transport—contributes to the problem in some way. So oil spills are a problem for everyone, not just people who live by the coast and tanker operates.

Sewage is another good example of how pollution can affect us all. Sewage discharged into coastal waters can wash up on beaches and cause a health hazard. People who bathe or surf in the water can fall ill if they swallow polluted water—yet sewage can have other harmful effects too: it can poison shellfish (such as cockles and mussels) that grow near the shore. People who eat poisoned shellfish risk suffering from an acute—and sometimes fatal—illness called paralytic shellfish poisoning. Shellfish is no longer caught along many shores because it is simply too polluted with sewage or toxic chemical wastes that have discharged from the land nearby.

Pollution matters because it harms the environment on which people depend. The environment is not something distant and separate from our lives. It's not a pretty shoreline hundreds of miles from our homes or a wilderness landscape that we see only on TV. The environment is everything that surrounds us that gives us life and health. Destroying the environment ultimately reduces the quality of our own lives—and that, most selfishly, is why pollution should matter to all of us.

How can we stop water pollution?

There is no easy way to solve water pollution; if there were, it wouldn't be so much of a problem. Broadly speaking, there are three different things that can help to tackle the problem—education, laws, and economics—and they work together as a team.

Making people aware of the problem is the first step to solving it. In the early 1990s, when surfers in Britain grew tired of catching illnesses from water polluted with sewage, they formed a group called Surfers Against Sewage to force governments and water companies to clean up their act. People who've grown tired of walking the world's polluted beaches often band together to organize community beach-cleaning sessions. Anglers who no longer catch so many fish have campaigned for tougher penalties against factories that pour pollution into our rivers. Greater public awareness can make a positive difference.

One of the biggest problems with water pollution is its transboundary nature. Many rivers cross countries, while seas span whole continents. Pollution discharged by factories in one country with poor environmental standards can cause problems in neighboring nations, even when they have tougher laws and higher standards. Environmental laws can make it tougher for people to pollute, but to be really effective they have to operate across national and international borders. This is why we have international laws governing the oceans, such as the 1982 UN Convention on the Law of the Sea (signed by over 120 nations), the 1972 London (Dumping) Convention , the 1978 MARPOL International Convention for the Prevention of Pollution from Ships , and the 1998 OSPAR Convention for the Protection of the Marine Environment of the North East Atlantic . The European Union has water-protection laws (known as directives) that apply to all of its member states. They include the 1976 Bathing Water Directive (updated 2006), which seeks to ensure the quality of the waters that people use for recreation. Most countries also have their own water pollution laws. In the United States, for example, there is the 1972 Clean Water Act and the 1974 Safe Drinking Water Act .

Most environmental experts agree that the best way to tackle pollution is through something called the polluter pays principle . This means that whoever causes pollution should have to pay to clean it up, one way or another. Polluter pays can operate in all kinds of ways. It could mean that tanker owners should have to take out insurance that covers the cost of oil spill cleanups, for example. It could also mean that shoppers should have to pay for their plastic grocery bags, as is now common in Ireland, to encourage recycling and minimize waste. Or it could mean that factories that use rivers must have their water inlet pipes downstream of their effluent outflow pipes, so if they cause pollution they themselves are the first people to suffer. Ultimately, the polluter pays principle is designed to deter people from polluting by making it less expensive for them to behave in an environmentally responsible way.

Our clean future

Life is ultimately about choices—and so is pollution. We can live with sewage-strewn beaches, dead rivers, and fish that are too poisonous to eat. Or we can work together to keep the environment clean so the plants, animals, and people who depend on it remain healthy. We can take individual action to help reduce water pollution, for example, by using environmentally friendly detergents , not pouring oil down drains, reducing pesticides, and so on. We can take community action too, by helping out on beach cleans or litter picks to keep our rivers and seas that little bit cleaner. And we can take action as countries and continents to pass laws that will make pollution harder and the world less polluted. Working together, we can make pollution less of a problem—and the world a better place.

If you liked this article...

Find out more, on this site.

• Air pollution (introduction)
• Climate change and global warming
• Environmentalism (introduction)
• Land pollution
• Organic food and farming

For older readers

For younger readers.

• Earth Matters by Lynn Dicks et al. Dorling Kindersley, 2008: A more general guide to problems Earth faces, with each major biome explored separately. In case you're interested, I contributed the polar regions chapter. The book is mostly a simple read and probably suitable for 7–10 (and maybe 9–12).

Selected news articles

Water pollution videos, notes and references.

Text copyright © Chris Woodford 2006, 2022. All rights reserved. Full copyright notice and terms of use .

This article was originally written for the UK Rivers Network and first published on their website in April 2006. It is revised and updated every year.

Rate this page

Tell your friends, cite this page, more to explore on our website....

• Get the book
• Send feedback

Assignment on Pollution

Introduction

Environmental pollution is a multi-disciplinary science involving chemistry, physics, life science, agriculture, medical science, public health, sanitary engineering etc. In broader sense, it is the study of the sources, reactions, transport, effect and fate of chemical species in the air, water and soil and the effect of human activity upon these.

Pollutant : A substance present in nature, in greater than natural abundance due to human activity, which ultimately has a detrimental effect on the environment and therefrom on living organisms and mankind. Examples are- lead, mercury, sulphur dioxide, carbon monoxide, etc.

Contaminant : A material which does not occur in nature, but is introduced by human activity into the environment, affecting its composition. A contaminant is classified as a pollutant when it exerts a detrimental effect. Example- chlorine gas

Types of Pollution

Causes of air pollution:

• motor vehicle exhaust
• power stations
• car manufacturing
• fertilizer factories
• demolishing buildings
• solvent evaporation
• volcanic eruption
• building roads
• forest fires

Effect of air pollution:

Global warming, acid rain, smog, ozone depletion are some effects of air pollution

Causes of water pollution:

• man-made chemicals used in farming
• heavy metals
• waste from factories
• sediment from the river bed
• air pollution
• thermal (heat) pollution
• soil pollution from rubbish dumps

Effects of water pollution:

The water in the earth’s biosphere is used and reused again and again by all living things

Soil Causes of soil pollution:

• mining and quarrying
• household waste
• demolition and putting up buildings
• factory waste

Effects of soil pollution:

Experts say that lots of land each year becomes unusable for humans or animals.

Causes of noise pollution:

• noisy roads and traffic
• air traffic
• rail traffic
• household noise
• industrial noise

Effects of noise pollution:

We hear and make sounds nearly all the time but too much noise can make us feel angry or depressed. The time of day that noises are heard is very important.

Radiation Pollution from radiation can be caused by:

• nuclear power plants
• making nuclear weapons
• disposal of nuclear waste
• mining for uranium

What can happen?

Radiation occurs naturally at low levels and is a useful source of power when concentrated.

It can also be very harmful to all living things if they are exposed to too much of it.

Light pollution happens when outside lights, such as a streetlight or a security light, points light upwards into the night sky.

This light gets scattered in the sky and makes an orange foggy glow to appear above a town.

It is likely that we won’t be able to see the stars in the night sky if the amount of light pollution isn’t closely controlled.

CONSERVATION AND ENVIRONMENT MANAGEMENT

It is imperative that we carefully utilise our renewable resources of soil, water, plant and animal life to sustain our economic development. Over exploitation of these is reflected in soil erosion, siltation, floods, and rapid destruction of our forest, floral and wildlife resources. The depletion of these resources often tends to be irreversible and since the bulk of our population depends on these natural resources to meet the basic needs, it has meant a deterioration in their quality of life.

Global petroleum deposits are likely to be exhausted within this century. Research is going on for alternatives to fossil fuel (petroleum) based on biomass (green energy). Controlled nuclear fusion holds the prospect of abundant energyif the relatively difficult deuterium-deuterium fusion reaction can be utilised for energy production. This energy source will become unlimited.

Solar energy is both renewable and non-polluting and provides ideal energy source. On a global scale, tapping of only a small fraction of solar energy the earth can supply the entire energy requirement.

In any new development project, due consideration must be given to the environmental, social and cultural impacts. For this purpose, environmental experts must be involved in project planning.

NATURAL AND MANMADE DISASTERS

Sometimes there are drastic changes in environment due to natural disasters, e.g. cyclone, typhoon, hurricane, tornado, earthquake, volcanic eruption etc. within a short time.

Bush fires , are another type of natural disasters, are of common occurrence in some regions of the world due to hot summer and lightning. During the hot summer months bush fires are common in Australia and in the Pacific coast arid areas in USA.

Man developed science and technology but over the years since the Industrial Revolution (1780- todate) he continued to plunder natural resources thereby polluting the environment. He degraded lands, destroyed forests, threw toxic wastes into rivers and seas and also harmful gases into the atmosphere. This continuous load of manmade pollutants into environment brought about adverse changes, which ultimately back-fired into series of disasters from time to time.

Some examples of manmade disasters are: London smog, Minamata disease, nuclear explosions, Bhopal disaster, Chernobyl disaster and Gulf War Hazards.

Nuclear Explosions . Two bombs were dropped by USA during World War II (Aug 6 and 9, 1945) on Hiroshima and Nagasaki in Japan. These instantly killed about 6 lakhs people, wiped out the two cities and unleashed radioactive fallout which has caused generations to suffer from various diseases including genetic disorder. Radiation continues to damage plants, soil and biosphere* in the region.

*the environment consists of four segments- atmosphere, hydrosphere, lithosphere and bioshphere.

Global Warming or Green House Effect

Among the constituents of the atmosphere, only carbon dioxide and water vapour strongly absorb infrared radiation (14000 to 25000 nm) and effectively block a large fraction of the earth’s emitted radiation. The radiation thus absorbed by carbon dioxide and water vapour is partly re-emitted to the earth’s surface. The net result is that the earth’s surface gets heated up by a phenomenon called the greenhouse effect .

The current global trend in deforestation along with increased combustion of fossil fuels have a cumulative effect on the net increase in carbon dioxide content (present 356 ppm, 50%). Carbon dioxide has the potential to rival nuclear wars in terms of massive irreversible damage to the environment. It is the major greenhouse gas but there are other greenhouse gases- methane (CH 4 , 19%), chlorofluorocarbons (CFC, 17%), nitrous oxide (N 2 O, 4%) and water vapour (2%).

In september, 1980 scientists reported a large hole in the ozone layer over Antarctica. CFC was the prime suspect for causing ozone depletion. It was established that one molecule of CFC is capable of destroying one lakh O 3 molecule in the stratosphere. The extreme chemical stability and nontoxicity of CFCs enable them to persist for years in the atmosphere and to enter the stratosphere. Depletion of ozone layer above the earth surface helps to penetrate harmful rays from the sun to the earth .

Soil Science Resource

Assignment on Cryptococcosis

Assignment on Campaign and Report on Rat Damages

Assignment on Computer BusinessMarketing System of Index IT Limited

Socio-technical Approach of Job Design

Afshar Experiment

Effects of Arthroscopy Surgery

Annual Report (Financial Statements) 2007 of Askari Commercial Bank Limited

Consumer Perceptions of Retail Banking Service on Exim Bank

Difference between Good and Well

Latest post.

Molten-salt Battery

Traction Power Network

New Quantum Sensing approach could result in improved High-precision Nanoscopic Techniques

Researchers Discover a Novel Method to Measure Flying Baseballs

Manual Transmission (MT)

Dual-clutch Transmission (DCT)

• Biology Article

Air Pollution Control

Air pollution & its control, air pollution definition.

“Air Pollution is the release of pollutants such as gases, particles, biological molecules, etc. into the air that is harmful to human health and the environment.”

Air Pollution Diagram

Table of Contents

What is Air Pollution?

Types of air pollutants, primary pollutants, secondary pollutants, causes of air pollution.

Air pollution refers to any physical, chemical or biological change in the air. It is the contamination of air by harmful gases, dust and smoke which affects plants, animals and humans drastically.

There is a certain percentage of gases present in the atmosphere. An increase or decrease in the composition of these gases is harmful to survival. This imbalance in the gaseous composition has resulted in an increase in earth’s temperature, which is known as global warming.

There are two types of air pollutants:

The pollutants that directly cause air pollution are known as primary pollutants. Sulphur-dioxide emitted from factories is a primary pollutant.

The pollutants formed by the intermingling and reaction of primary pollutants are known as secondary pollutants. Smog, formed by the intermingling of smoke and fog, is a secondary pollutant.

Also Read:  Water Pollution

Following are the important causes of air pollution:

Burning of Fossil Fuels

The combustion of fossil fuels emits a large amount of sulphur dioxide. Carbon monoxide released by incomplete combustion of fossil fuels also results in air pollution.

Automobiles

The gases emitted from vehicles such as jeeps, trucks, cars, buses, etc. pollute the environment. These are the major sources of greenhouse gases and also result in diseases among individuals.

Agricultural Activities

Ammonia is one of the most hazardous gases emitted during agricultural activities. The insecticides, pesticides and fertilisers emit harmful chemicals in the atmosphere and contaminate it.

Factories and Industries

Factories and industries are the main source of carbon monoxide, organic compounds, hydrocarbons and chemicals. These are released into the air, degrading its quality.

Mining Activities

In the mining process, the minerals below the earth are extracted using large pieces of equipment. The dust and chemicals released during the process not only pollute the air, but also deteriorate the health of the workers and people living in the nearby areas.

Domestic Sources

The household cleaning products and paints contain toxic chemicals that are released in the air. The smell from the newly painted walls is the smell of the chemicals present in the paints. It not only pollutes the air but also affects breathing.

Effects of Air Pollution

The hazardous effects of air pollution on the environment include:

Air pollution has resulted in several respiratory disorders and heart diseases among humans. The cases of lung cancer have increased in the last few decades. Children living near polluted areas are more prone to pneumonia and asthma. Many people die every year due to the direct or indirect effects of air pollution.

Global Warming

Due to the emission of greenhouse gases, there is an imbalance in the gaseous composition of the air. This has led to an increase in the temperature of the earth. This increase in earth’s temperature is known as global warming . This has resulted in the melting of glaciers and an increase in sea levels. Many areas are submerged underwater.

The burning of fossil fuels releases harmful gases such as nitrogen oxides and sulphur oxides in the air. The water droplets combine with these pollutants, become acidic and fall as acid rain which damages human, animal and plant life.

Ozone Layer Depletion

The release of chlorofluorocarbons, halons, and hydrochlorofluorocarbons in the atmosphere is the major cause of depletion of the ozone layer. The depleting ozone layer does not prevent the harmful ultraviolet rays coming from the sun and causes skin diseases and eye problems among individuals. Also Read:  Ozone Layer Depletion

Effect on Animals

The air pollutants suspend in the water bodies and affect aquatic life. Pollution also compels the animals to leave their habitat and shift to a new place. This renders them stray and has also led to the extinction of a large number of animal species.

Following are the measures one should adopt, to control air pollution:

Avoid Using Vehicles

People should avoid using vehicles for shorter distances. Rather, they should prefer public modes of transport to travel from one place to another. This not only prevents pollution, but also conserves energy.

Energy Conservation

A large number of fossil fuels are burnt to generate electricity. Therefore, do not forget to switch off the electrical appliances when not in use. Thus, you can save the environment at the individual level. Use of energy-efficient devices such as CFLs also controls pollution to a greater level.

Use of Clean Energy Resources

The use of solar, wind and geothermal energies reduce air pollution at a larger level. Various countries, including India, have implemented the use of these resources as a step towards a cleaner environment.

Other air pollution control measures include:

• By minimising and reducing the use of fire and fire products.
• Since industrial emissions are one of the major causes of air pollution, the pollutants can be controlled or treated at the source itself to reduce its effects. For example, if the reactions of a certain raw material yield a pollutant, then the raw materials can be substituted with other less polluting materials.
• Fuel substitution is another way of controlling air pollution. In many parts of India, petrol and diesel are being replaced by CNG – Compressed Natural Gas fueled vehicles. These are mostly adopted by vehicles that aren’t fully operating with ideal emission engines.
• Although there are many practices in India, which focus on repairing the quality of air, most of them are either forgotten or not being enforced properly. There are still a lot of vehicles on roads which haven’t been tested for vehicle emissions.
• Another way of controlling air pollution caused by industries is to modify and maintain existing pieces of equipment so that the emission of pollutants is minimised.
• Sometimes controlling pollutants at the source is not possible. In that case, we can have process control equipment to control the pollution.
• A very effective way of controlling air pollution is by diluting the air pollutants.
• The last and the best way of reducing the ill effects of air pollution is tree plantation. Plants and trees reduce a large number of pollutants in the air. Ideally, planting trees in areas of high pollution levels will be extremely effective.

Frequently Asked Questions

What is the major cause of air pollution, how air pollution causes global warming, what is acid rain name the gases responsible for acid rain., deforestation is a major reason for air pollution. explain..

Put your understanding of this concept to test by answering a few MCQs. Click ‘Start Quiz’ to begin!

Select the correct answer and click on the “Finish” button Check your score and answers at the end of the quiz

Visit BYJU’S for all Biology related queries and study materials

Your result is as below

Request OTP on Voice Call

Leave a Comment Cancel reply

Your Mobile number and Email id will not be published. Required fields are marked *

Post My Comment

very well explained. I could not find so amazing information on air pollution for school hw. Epic stuff!!!

THANK U FOR THIS! THIS WAS VERY HELPFULL FOR ME!!!!!!!

😢😢😢Yes, everyone has not aware about pollution and but we do effort for reduce pollution & make our earth future bright💐💐

Right✔👉 bro😎

Thank you Byjus for such an easy lesson !!!!!!!!!!!!!!!!!!!

Relevant answers and easy to learn and understand Byjus helps me alot Thanks

At the time of lockdown the environment has improved but when the lockdown will end the pollution rate would increase😖😖😖😫😫😫🙁🙁🙁🙍🙍🙍

Otherwise nicely explained👍👍👍keep it up

Yaa right bro Thanks to Byjus for this

THANX FOR ALL THESE INFO.

a very informative page

There is nothing more than living in a world full of Polluted gas and we leave bad environment for our future generation. 😕 Lets keep the word a beautiful place to live for everyone.

Very useful 👌 used it for my daughter’s oral

It is very useful I understood everything

Nice presentation and explanation 👌👌👌and it’s very useful for better understanding

Thank you so much, this content was really very informative, helpful and too useful for me. Thanks to Byjus 🙏😇

Thank you soo much for this info . It was really helpful for my project

Thank you BYJUS

Thank you sooooooooooooooooooooooooooooooooooooooooooooooooooo much this helped me in my project

THANK YOU BYJU’S. THIS HELPED IN MY PREASENTATION👍😊👍🏻

It helped me a lot with my project, thank you so much Byjus!

It’s very good for students

Well explained!

Thank you so much.

Byjus is best

Thank you for this this was very helpful for me

Thank you soooooooooooooooooooooooooooooooooooooo much this helped me in my project

Well explained

Thank you so much

This is very good. And this makes my project easy

Thank you so much 🙏🙏 Easily understandable language. Lots of love and respect from the “Heaven of eath”. KASHMIR 🥰🥰

Really good by byjus 👏👍👍 It really help in my projects work And I got 1 prize because of bonus

Thanks From Prabal

Thank you so much it is easy way to understan so thank you😍😍😍

Register with BYJU'S & Download Free PDFs

Register with byju's & watch live videos.

Pollution Essay in English- Essay on Environmental Pollution

Environmental Pollution Essay: Pollution comes in many forms, including air pollution, water pollution, noise pollution, and so on. Check here Pollution Essay in English.

Table of Contents

Pollution Essay

In today’s society, pollution has emerged as a major yet widely prevalent problem. It has existed for a very long time, even before the advent of humans, in many forms including volcanic eruptions and wildfires that cause a variety of photochemical reactions in the atmosphere. The present worry is that it is becoming worse every day as a result of numerous sources of pollution. Humans and machine-made objects are also a major source of pollution. It is true that pollution causes serious harm to the environment, and as humans, it is our responsibility to do all we can to stop it.

Pollution Essay in English

Almost every class has essay writing in its curriculum, and the pollution essay is a hot topic among other essay topics. All students need to know about pollution and how it adversely affects the environment and life on earth. Students should be aware of treatments for pollution so that they can take action to reduce it. Today’s youngest environmental activist is Greta Thunberg from Stockholm, Sweden. She proved that she can save Mother Earth even when she is young. There is no age limit to take on this great responsibility. Students should be aware of environmental pollution and its reduction techniques. In this article, we have discussed contamination essays. Students should read the entire page and read every word on that page to fully understand all the topics covered in the Tainted Essay.

Read: Global Warming Essay

Essay on Pollution 

What is pollution.

The intrusion of pollutants into the global environment is called pollution. The contaminant is the designation of these contaminants. Pollutants can come from both humans and nature, such as garbage and volcanic ash. Pollution comes in many forms, including air pollution, water pollution, and noise pollution. Pollution is increasing day by day as pollution levels rise and people suffer serious illnesses. Therefore, everyone should be aware of pollution and its effects and how to successfully reduce it. Just like a balanced diet for a healthy body, our environment requires a balanced mixture of all substances. Any substance above that threshold pollutes the environment. B. Increased atmospheric carbon dioxide and nitrogen oxides. It pollutes the air and harms human health.

Read: My Family Essay

Types of Pollution: Air, Water, Noise, and Soil 

Different types of pollution have different effects on different parts of the environment. The pollution types include Air pollution, Water pollution, Noise pollution, and Soil pollution. Let us discuss these types of pollution in detail.

Air Pollution

Air pollution happens when dangerous or excessive amounts of pollutants, such as smoke and hazardous gases from industry, CFCs and oxides produced by cars, the burning of solid wastes, etc., are released into the environment. A nice and realistic example of air pollution is the pollution caused by firecrackers following Diwali. Another example of air pollution is the smoke produced by moving cars.

Noise Pollution

The lighting of fireworks, running of industries, and the playing of music over loudspeakers—especially during festival season—all contribute to noise pollution. If it isn’t controlled, it may also have an impact on how the brain functions. Due to the high volume of vehicles on the road, noise pollution is also increasing. This is concerning for people who live in cities or close to highways because it leads to stress-related problems like anxiety.

Water Pollution

Water pollution is a significant problem for humans right now. Pollutants are dumped directly into bodies of water like canals, rivers, and seas, including sewage waste, pesticides, home, and agricultural trash, industrial or factory waste, and other wastes. As a result, the habitat of marine life has been destroyed, and the amount of dissolved oxygen in water bodies has started to decrease. The availability of drinkable water is significantly impacted by water contamination. People are compelled to consume tainted water, which might result in serious illnesses.

Soil Pollution

A sizable fraction of the Indian population works in agriculture. As part of farming, farmers use a range of fertilizers, herbicides, fungicides, and other chemical substances. This further contaminates the soil, making it unsuitable for growing crops. In addition, soil pollution happens when authorities dump household or commercial trash on the ground. As a result, mosquito reproduction is encouraged, which promotes the spread of diseases like dengue and malaria.

Pollution Essay: Effects of Different types of Pollution 

Effects of soil pollution .

Soil is the foundation of the earth on which we walk, travel, grow vegetables and grains, and nourish us. Chemical farming degrades soil quality, and many hazardous substances come into contact with our bodies and cause various skin diseases, which are unavoidable in the form of food crops grown on such contaminated soil. Mm. Below are some of the most common illnesses caused by soil contamination. leukemia liver and kidney failure loss of fertility

Effects of Noise Pollution 

Construction, loudspeakers, and other man-made noises, as well as natural disturbances like thunderstorms and animal noises, all contribute to noise pollution. Some of the most prevalent ailments brought on by noise pollution include the following:

Headaches The issue with reasoning and changing behavior elevated blood pressure hearing loss

Effects of Water Pollution 

Sewage waste, pesticides, household and agricultural waste, industrial or factory trash, and other pollutants that are dumped directly into water bodies including canals, rivers, and seas are the main causes of water pollution. Some of the most prevalent illnesses brought on by water contamination include the following:

Typhoid, polio, hepatitis A, dysentery, diarrhea, and cholera

Pollution Essay: Pollution’s Effects on living beings

All types of pollution, whether air, water, soil, or noise has an adverse effect on living beings. Organisms are plagued with deadly diseases caused by pollution of water, air, noise, or soil.

• Several fatal diseases are caused by air pollution such as Ischemic heart disease, stroke, lung cancer, chronic obstructive pulmonary disease (COPD), and acute lower respiratory infections in children among the most prevalent illnesses brought on by air pollution. Several illnesses like strokes, asthma, bronchitis, heart attacks, lung diseases, cancer, and early mortality from heart conditions are brought on by air pollution in India. Global warming is the most burning problem in the whole world that is caused by air pollution.

• Poor drinking water quality contributes to the development of more than 50 different diseases, and it is the cause of 80% of illnesses and 50% of child deaths worldwide. Water contamination, however, results in diarrhea, skin conditions, malnutrition, even cancer, and other problems connected to water pollution.

• Every day, millions of  People are impacted by noise pollution. Most commonly, this leads to noise-induced hearing loss (NIHL). Stress, high blood pressure, heart disease, and sleep disturbances can all be triggered by loud noises. All age groups, especially children, are susceptible to these health problems.  Noise pollution is very dangerous even deadlier for patients with heart problems.

Not only human beings, pollution badly impacts animals, birds as well as marine environments. Through organ damage, increased susceptibility to stress and disease decreased reproductive success, and even death, air pollution can poison wildlife. Many marine creatures become extinct as a result of water pollution.

Pollution Essay- Methods to Reduce Pollution 

As responsible citizens, we must take some measures to reduce the pollution in the environment for the future. Here, we’ve included a few strategies for lowering pollution.

• More trees should be planted.
• Food should be consumed in biodegradable containers.
• Avoid disposing of industrial trash in waterways such as rivers, seas, and oceans.
• Regulation of air through chimneys
• Use of electric vehicles or cycles
• Reduce the use of detergents
• Filter the wastewater before discharging it from the industry.
• Use of modern Chimneys so that harmful particles are not come out into the environment with smoke.
• Reduce the use of single-use plastic.
• Utilization of renewable energy instead of fossil fuel energy.
• Follow the guidelines the government has set forth for reducing environmental pollution.
• Increase public knowledge of environmental pollution, its effects, and the steps being taken to combat it.

Essay on Pollution- Format

Before we write an essay on environmental pollution, we must keep in mind some key points. The key points of the essay format are the introduction, content, and conclusion.

Introduction-  The essay introduction should outline a specific whole topic. It gives a general idea of the topic to the reader. A pollution essay can start with a simple definition or a thought-provoking sentence. This is the first thing your readers will see, so add real-world examples and impactful questions to keep them interested.

Main Content – This is the heart of the essay. This segment must consist of a description of different types of pollution ( Air, Noise, water, soil pollution), how pollution affects the atmosphere and the environment, human beings along with all living organisms. End of the segment, it must mention the protective measures to fight against Pollution.

​​ Conclusion – This part concludes the essay. , about 50 words. Try to give a positive outlook on the topic you are discussing or conclude with a brief summary.

Below we provide some pollution essays for a better understanding of the format of the pollution essay.

Pollution Paragraph

One of the biggest issues the entire planet is currently dealing with. Impairing the purity of anything is called contamination. And pollution of the air, water, and land around us is called pollution. Pollution affects our health and harms us in many ways.

Air Pollution-Air pollution is caused by smoke from vehicles, chimneys in mills and factories, and cooking furnaces. The stench of rotting garbage on the streets, the stench of dead animals. Dirty surface runoff pollutes the air. Excessive use of carbon dioxide emissions is causing global warming, causing glaciers to melt and sea levels to rise. Breathing impure air can cause great harm to your lungs. Air pollution causes acid rain, which affects historic landmarks such as the Taj Mahal and many buildings. The only hope to escape the curse is to plant more trees to prevent air pollution.

Water Pollution-Water is polluted when dirty and toxic waste from factories and factories is dumped into rivers. The polluted sewage discharged from the factory mixes directly with the river water. Drinking this water is bad for your health and causes various diseases such as diarrhea and typhoid fever. Dirty water is the breeding ground for mosquitoes that cause many deadly diseases such as malaria and dengue fever.

Noise Pollution – The horns of trucks, buses, microphones, and loudspeakers cause noise pollution. Noise pollution affects hearing and adversely affects the heart. Noise pollution is a heart patient’s nightmare. Soil Contamination-Excessive use of single-use plastics, unrestricted use of pesticides in agriculture, and unrestricted deforestation cause changes in soil composition and soil contamination. Therefore, if we want to live a healthy life, we must pay close attention to pollution. We must regulate the use of plastics, fossil fuels, deforestation and the use of high-frequency horns and speakers. As responsible citizens, we must take action to minimize pollution for a better life and future.

Essay on Environmental Pollution

Introduction

Environmental pollution is a global crisis that threatens the well-being of the planet and all its inhabitants. It refers to the introduction of harmful contaminants into the natural environment, leading to adverse effects on ecosystems, human health, and the overall quality of life. This essay explores the various forms of environmental pollution, their causes, consequences, and potential solutions.

Types of Environmental Pollution

• Air Pollution: Air pollution involves the release of harmful substances into the Earth’s atmosphere. Common pollutants include particulate matter (PM), sulfur dioxide (SO2), nitrogen oxides (NOx), carbon monoxide (CO), and volatile organic compounds (VOCs). Sources of air pollution include industrial processes, transportation, and the burning of fossil fuels.
• Water Pollution: Water pollution occurs when pollutants contaminate bodies of water such as rivers, lakes, oceans, and groundwater. Pollutants include sewage, industrial effluents, pesticides, and plastic waste. This pollution threatens aquatic ecosystems and the availability of clean drinking water.
• Soil Pollution: Soil pollution arises from the deposition of hazardous substances like heavy metals, chemicals, and pesticides into the soil. It degrades soil fertility, harms crops, and can lead to toxic substances entering the food chain.
• Noise Pollution: Noise pollution is the excessive, disturbing noise in the environment, typically caused by urbanization, industrial activities, transportation, and recreational activities. Prolonged exposure to noise pollution can result in various health issues.
• Light Pollution: Light pollution is the excessive or misdirected artificial light produced by streetlights, buildings, and other sources. It disrupts natural light cycles, negatively impacting nocturnal animals and human circadian rhythms.

Causes of Environmental Pollution

• Industrialization: Rapid industrial growth has led to increased emissions of pollutants into the air and water. Factories, power plants, and manufacturing processes release various chemicals and emissions that contribute to pollution.
• Transportation: The combustion of fossil fuels in automobiles, ships, and airplanes is a major source of air pollution. Emissions from vehicles release harmful substances like carbon dioxide (CO2), NOx, and CO into the atmosphere.
• Agricultural Practices: Intensive farming practices involve the use of pesticides, fertilizers, and other chemicals that can lead to soil and water pollution. Runoff from farms can carry these pollutants into nearby water bodies.
• Improper Waste Disposal: Inadequate waste management, including improper disposal of hazardous waste and plastic litter, contributes to pollution in landfills, oceans, and waterways.

Consequences of Environmental Pollution

• Health Impacts: Air and water pollution can lead to respiratory diseases, cardiovascular problems, and various other health issues in humans. Chemical contamination of food due to soil pollution poses additional health risks.
• Biodiversity Loss: Pollution disrupts ecosystems, causing harm to plant and animal species. Many species are at risk of extinction due to habitat destruction and pollution-related stress.
• Climate Change: Greenhouse gas emissions, a form of air pollution, are a major driver of global climate change, leading to rising temperatures, extreme weather events, and sea-level rise.
• Economic Costs: Pollution-related health care costs, reduced agricultural yields, and damage to infrastructure result in significant economic burdens for societies.
• Aesthetic and Recreational Impact: Pollution diminishes the aesthetic appeal of natural environments and impairs recreational opportunities, affecting the quality of life for individuals and communities.

Solutions to Environmental Pollution

• Sustainable Practices: Transitioning to sustainable agriculture, renewable energy sources, and eco-friendly industrial processes can reduce pollution.
• Regulation and Enforcement: Governments must enact and enforce strict environmental regulations to limit emissions and pollutants from industries, transportation, and agriculture.
• Waste Reduction and Recycling: Promoting waste reduction, recycling, and proper disposal of hazardous materials can mitigate pollution.
• Public Awareness: Education and awareness campaigns can encourage individuals to adopt eco-friendly practices and make environmentally conscious choices.
• Technological Innovation: Developing and implementing clean technologies, such as electric vehicles and carbon capture, can significantly reduce pollution.

Environmental pollution is a grave concern that demands immediate attention and collective action. Addressing pollution requires a multifaceted approach, including regulatory measures, sustainable practices, and public involvement. The future of our planet and the well-being of future generations depend on our ability to combat environmental pollution effectively.

Article on Pollution

Introduction: In today’s world, pollution has become one of the most significant global concerns, affecting every aspect of the Earth’s environment and human health. Its sources are numerous and its impact widespread, making it a complex issue that demands immediate and effective action.

• Air Pollution: Caused by the release of harmful substances like industrial emissions, vehicle exhaust, and chemical vapors, air pollution leads to respiratory diseases and contributes to global warming.
• Water Pollution: Industrial waste, sewage, and agricultural runoff contaminate water bodies, affecting marine life and making water unsafe for human consumption.
• Soil Pollution: The use of pesticides and industrial activity contaminates the soil, affecting plant life and entering the food chain.
• Noise Pollution: Excessive noise from traffic, industries, and urban development disrupts wildlife habitats and affects human health.
• Health issues like asthma, heart disease, and even cancer can be traced back to pollution.
• Ecosystems are disrupted, leading to the loss of biodiversity.
• Economic impact includes healthcare costs and loss of productivity due to health issues.
• Regulatory Measures: Implementation of stricter environmental regulations and policies by governments.
• Technological Advancements: Development and adoption of clean and green technologies.
• Public Awareness: Educating the public about the effects of pollution and ways to reduce it.
• Individual Actions: Encouraging practices like recycling, using public transportation, and reducing energy consumption.

Conclusion: The battle against pollution is not just the responsibility of governments or organizations but of every individual. It requires a collective effort where each action, no matter how small, contributes to a larger positive impact. A sustainable future is possible if we act now to mitigate the effects of pollution on our planet.

Call to Action: It is crucial for everyone to become environmentally conscious and take steps to reduce pollution in their daily lives. By working together and making informed choices, we can create a cleaner, healthier world for future generations.

Environment Pollution Essay in Hindi (1000 words)

प्रदूषण निबंध

लगभग हर वर्ग के पाठ्यक्रम में निबंध लेखन होता है और प्रदूषण निबंध अन्य निबंध विषयों के बीच एक गर्म विषय है। प्रदूषण के बारे में हर छात्र को पता होना चाहिए कि प्रदूषण कैसे पृथ्वी के पर्यावरण और पृथ्वी पर जीवन पर प्रतिकूल प्रभाव डाल रहा है। छात्रों को प्रदूषण के इलाज के बारे में पता होना चाहिए ताकि वे प्रदूषण को कम करने के लिए कदम उठा सकें। आज के दौर में ग्रेटा थनबर्ग सबसे कम उम्र की पर्यावरण कार्यकर्ता हैं, वह स्टॉकहोम, स्वीडन की रहने वाली हैं। उसने साबित कर दिया है कि आप कम उम्र में भी धरती मां को बचा सकते हैं, इस महान जिम्मेदारी को लेने की कोई उम्र सीमा नहीं है। छात्रों को प्रदूषण और इसकी कमी तकनीकों के बारे में पता होना चाहिए। इस लेख में, हमने प्रदूषण निबंध को कवर किया है। प्रदूषण निबंध में शामिल सभी विषयों की पूरी समझ प्राप्त करने के लिए छात्रों को पूरे पृष्ठ को पढ़ना चाहिए और इस पृष्ठ के प्रत्येक शब्द को पढ़ना चाहिए।

पृथ्वी के पर्यावरण में हानिकारक पदार्थों के प्रवेश को प्रदूषण कहा जाता है। प्रदूषक इन हानिकारक पदार्थों के लिए शब्द हैं। प्रदूषक मानव और प्राकृतिक दोनों स्रोतों से उत्पन्न हो सकते हैं, जैसे कचरा और ज्वालामुखी राख। प्रदूषण कई रूपों में आता है, जिसमें वायु प्रदूषण, जल प्रदूषण, ध्वनि प्रदूषण आदि शामिल हैं। प्रदूषण का स्तर दिन-ब-दिन बढ़ता जा रहा है, जिससे लोग गंभीर बीमारियों का शिकार हो रहे हैं। नतीजतन, सभी को प्रदूषण, इसके प्रभावों और इसे सफलतापूर्वक कम करने के तरीके के बारे में बताया जाना चाहिए। हमारे पर्यावरण को स्वस्थ शरीर के लिए संतुलित भोजन की तरह सभी पदार्थों के संतुलित मिश्रण की आवश्यकता होती है। कोई भी पदार्थ जो अपने दहलीज स्तर से ऊपर बढ़ जाता है, पर्यावरण को प्रदूषित करता है, जैसे कि वातावरण में कार्बन डाइऑक्साइड और नाइट्रोजन ऑक्साइड में वृद्धि, जो हवा को प्रदूषित करती है और मानव स्वास्थ्य को नुकसान पहुंचाती है।

प्रदूषण के प्रकार: वायु, जल, शोर और मिट्टी

विभिन्न प्रकार के प्रदूषणों का पर्यावरण के विभिन्न भागों पर अलग-अलग प्रभाव पड़ता है। प्रदूषण के प्रकारों में वायु प्रदूषण, जल प्रदूषण, ध्वनि प्रदूषण और मृदा प्रदूषण शामिल हैं। आइए हम इस प्रकार के प्रदूषण के बारे में विस्तार से चर्चा करें।

वायु प्रदूषण: जब जहरीले या अत्यधिक मात्रा में प्रदूषक जैसे उद्योग से निकलने वाला धुआं और हानिकारक गैसें, क्लोरोफ्लोरोकार्बन, और ऑटोमोबाइल द्वारा बनाए गए ऑक्साइड, ठोस कचरे के जलने आदि को पर्यावरण में पेश किया जाता है, तो वायु प्रदूषण होता है। दिवाली के बाद पटाखों से होने वाला प्रदूषण वायु प्रदूषण का एक अच्छा और संबंधित उदाहरण है, वायु प्रदूषण का एक और उदाहरण वाहनों से निकलने वाला धुआं है।

ध्वनि प्रदूषण: ध्वनि प्रदूषण पटाखों के फोड़ने, कारखानों के संचालन और लाउडस्पीकरों पर प्रसारित होने वाले संगीत के कारण भी होता है, खासकर त्योहारों के मौसम में। यह मस्तिष्क के काम करने के तरीके को भी प्रभावित कर सकता है अगर इसे प्रबंधित नहीं किया जाता है। सड़कों पर वाहनों की भारी संख्या से ध्वनि प्रदूषण भी बढ़ जाता है। यह उन लोगों के लिए चिंता का विषय है जो शहरों में या राजमार्गों के पास रहते हैं इसके कारण लोगों को तनाव से संबंधित समस्याएं होती हैं जैसे कि इसके परिणामस्वरूप चिंता।

जल प्रदूषण: जल प्रदूषण के रूप में मनुष्य इस समय एक बड़ी चुनौती का सामना कर रहा है। सीवेज अपशिष्ट, कीटनाशक, घरेलू और कृषि अपशिष्ट, औद्योगिक या कारखाने के कचरे, और अन्य कचरे को सीधे नहरों, नदियों और समुद्रों जैसे जल निकायों में फेंक दिया जाता है। नतीजतन, समुद्री जीवन आवास खो गया है, और जल निकायों में घुलित ऑक्सीजन के स्तर में गिरावट शुरू हो गई है। पेयजल की उपलब्धता पर जल प्रदूषण का महत्वपूर्ण प्रभाव पड़ता है। लोग दूषित पानी पीने को मजबूर हैं, जिससे गंभीर बीमारियां होती हैं।

मृदा प्रदूषण: कृषि भारतीय आबादी के एक बड़े हिस्से को रोजगार देती है। किसान खेती के हिस्से के रूप में विभिन्न प्रकार के उर्वरकों, जड़ी-बूटियों, कवकनाशी और अन्य रासायनिक यौगिकों का उपयोग करते हैं। यह आगे मिट्टी को प्रदूषित करता है, जिससे यह फसल उत्पादन के लिए अनुपयुक्त हो जाता है। इसके अलावा, यदि अधिकारी औद्योगिक या आवासीय कचरे को जमीन पर फेंकते हैं, तो मिट्टी प्रदूषण होता है। यह बदले में, मच्छरों के प्रजनन को प्रोत्साहित करता है, जिससे डेंगू, मलेरिया जैसी बीमारियां फैलती हैं।

जीवों पर प्रदूषण का प्रभाव

सभी प्रकार के प्रदूषण चाहे वायु हो, जल हो, मिट्टी हो या ध्वनि हो, जीवों पर प्रतिकूल प्रभाव पड़ता है। जल, वायु, ध्वनि या मिट्टी में प्रदूषण के कारण होने वाली घातक बीमारियों से जीवित प्राणी प्रभावित हो रहे हैं। यहां हमने विभिन्न प्रदूषणों से होने वाली बीमारियों की सूची दी है।

मृदा प्रदूषण के प्रभाव

मिट्टी पृथ्वी की नींव है जिस पर हम चलते हैं या यात्रा करते हैं और जिस पर हम अपना पेट भरने के लिए सब्जियां और अनाज उगाते हैं। रासायनिक खेती के कारण मिट्टी की गुणवत्ता बिगड़ रही है, यह अपरिहार्य है कि कई खतरनाक पदार्थ हमारे शरीर के संपर्क में आते हैं और विभिन्न प्रकार के त्वचा विकारों का कारण बनते हैं, या ऐसी प्रदूषित मिट्टी पर उगाई जाने वाली खाद्य फसलों के रूप में।

Sharing is caring!

Q. What is Pollution?

The introduction of harmful substances into the earth’s environment is referred to as pollution.

Q. Causes of water pollution?

Sewage waste, Pesticides, household, and agricultural waste, industrial or factory waste, and other wastes are thrown directly into water bodies such as canals, rivers, and seas is the main reason for water pollution.

Q. Causes of Air pollution?

Smoke and harmful gases from industry, chlorofluorocarbon, and oxides created by automobiles, the burning of solid wastes are the main causes of air pollution.

Trending Articles

• WBJEE Result 2024
• NEET Result 2024
• NEET Question Paper 2024
• NEET Answer Key 2024 All Sets
• NEET Expected Cut Off 2024

CBSE Board Exam 2024

• CBSE Class 10 Syllabus 2024 
• CBSE Class 12 Syllabus 2024 
• CBSE Previous Year Papers  
• CUET Syllabus
• CUET Previous Year paper
• CUET Participating College & Universities
• JEE Main 2024  
• JEE Main Syllabus 2024  
• JEE Main Exam Analysis 2023  
• NEET 2024  
• NEET Syllabus 2024
• NEET State wise Cut off
• NEET Rank Predictor  
• NEET OMR Sheet
• NEET College Predictor

Recent Posts

Important exams, ncert solutions.

• NCERT Class 12
• NCERT Class 11
• NCERT Class 10
• NCERT Class 9

NCERT Books

School syllabus.

• CBSE Class 12
• CBSE Class 11
• CBSE Class 10
• CBSE Class 9
• JEE Mains 2024

Our Other Websites

• Teachers Adda
• Bankers Adda
• Current Affairs
• Adda Bengali
• Engineers Adda
• Adda Marathi
• Adda School

Get all your queries solved in one single place. We at Adda247 school strive each day to provide you the best material across the online education industry. We consider your struggle as our motivation to work each day.

Download Adda247 App

Follow us on

• Responsible Disclosure Program
• Cancellation & Refunds
• Terms & Conditions
• Privacy Policy

Grassy Narrows First Nation files lawsuit against Ontario, federal governments over mercury contamination

Superior court challenge alleges governments fail to protect first nation treaty rights.

Social Sharing

A First Nation in northwestern Ontario that has faced decades of mercury poisoning is suing the provincial and federal governments, arguing they've failed to protect its treaty rights.

Asubpeeschoseewagong Netum Anishinabek First Nation — known as Grassy Narrows — filed the lawsuit in Ontario's Superior Court of Justice on Tuesday morning.

It argues the governments have violated their duties under Treaty 3 by failing to protect against or remedy the effects of mercury contamination in the English-Wabigoon River system.

The allegations in this lawsuit haven't been tested in court.

Contamination of the river system dates back to the 1960s and '70s  when Dryden's paper mill in northwestern Ontario dumped an estimated nine tonnes of mercury into the water.

Generations of people have consumed fish from the river. According to a previously reported study by medical specialists, about 90 per cent of the community of roughly 1,000 people experience symptoms of mercury poisoning. They include Chief Rudy Turtle.

"Our mercury nightmare should have ended long ago, but it has been longer and worse because of the government's failure to live up to its obligations," Turtle said in a news release on Tuesday.

'A test of ... commitment to truth'

For years, environmental advocates have called for the river to be cleaned up and the mill to be shut down.

In late May, a new study from Western University in London, Ont., revived these demands with a report suggesting mercury contamination in the river system has been made worse by ongoing industrial pollution.

"Dryden Fibre Canada took over operations for the mill last August. We operate in compliance with extensive environmental regulatory requirements," said Dianne Loewen, a spokesperson for Dryden Fibre Canada, in an email to CBC News late Tuesday afternoon. "Regarding this morning's announcement by Grassy Narrows — we have not yet seen the filing and will not be commenting."

Grassy Narrows lawsuit targets 'environmental racism' of mercury poisoning

"The government has egregiously violated its obligations to Grassy Narrows by failing to ensure that Grassy Narrows people could safely practise their right to fish — a cornerstone of Grassy Narrows' sustenance and Indigenous way of life," says a statement from the First Nation that was also issued Tuesday.

"This case will be a test of Ontario's and Canada's commitment to truth, reconciliation and justice following one of Canada's worst environmental and human rights catastrophes." 

Calls to end environmental racism

During a news conference in Toronto on Tuesday morning, Kiiwetinoong MPP Sol Mamakwa said the lack of government action is perpetuating the effects of colonialism on Grassy Narrows people.

"When we talk about environmental genocide, this is what it looks like," Mamakwa said.

Judy Da Silva is a Grassy Narrows grandmother and the community's environmental health co-ordinator. She says she also experiences symptoms of mercury poisoning, which include loss of co-ordination, trouble swallowing, and a loss of sensation in her hands and feet. 

"Our people were proud fishermen and land users and hunters, and then this poison came and took all that away," Da Silva said in an interview with CBC News.

She thinks back to summer 2000, when the Walkerton water crisis made national headlines after seven people died and about 2,300 others became ill from Canada's worst E. coli contamination.

"They got compensated so quickly and then Grassy's been going through this for decades, and still there's no resolution," she said. "I think it's environmental racism."

Federal leaders respond

In 2017, the federal government committed to building a Mercury Care Home in Grassy Narrows. The same year, the Ontario government committed $85 million to fund mercury cleanup and remediation efforts in the English-Wabigoon River system.

About seven years later, the river remains toxic. Construction on the Mercury Care Home is expected to start this summer and take two to three years to complete.

In Ottawa on Tuesday, Minister of Indigenous Services Patty Hajdu told reporters she understands the frustration that has led Grassy Narrows to go through the courts.

"I'm sure they're seeing it as a part of a broader effort to ensure that this kind of environmental racism doesn't continue," Hajdu said.

Minister acknowledges frustration of Grassy Narrows First Nation following launch of lawsuit

Ottawa has now committed $146 million for the construction and operation of the Mercury Care Home, she said. While the protection of water falls under provincial jurisdiction, Hajdu did point to Bill C-61,  an act respecting water, source water, drinking water, wastewater and related infrastructure on First Nation lands , as a key way of preventing future harm.

CBC News reached out to the Ontario government for comment on the lawsuit and received an emailed response from Keesha Seaton, spokesperson for the Ministry of the Attorney General, late Tuesday afternoon.

"As this matter is subject to litigation, it would be inappropriate to comment," Seaton said.

A spokesperson for the federal Office of the Minister of the Environment and Climate Change also provided CBC News with an emailed statement on behalf of Hajdu and Minister of the Environment and Climate Change Steven Guilbeault.

• Mercury poisoning near Grassy Narrows First Nation worsened by industrial pollution, study suggests
• First Nations Land Defence Alliance says no nuclear waste facility without First Nations consent

"We cannot comment on the legal case as it is before the courts. It is extremely important to the government of Canada to do its part in responding to this crisis, and we will be there to work with Grassy Narrows and Wabaseemong Independent Nations every step of the way," wrote spokesperson Kaitlin Power.

Federal NDP Leader Jagmeet Singh also reacted to the Grassy Narrows lawsuit while addressing reporters on Parliament Hill.

"It's an ongoing example of Indigenous communities receiving second-class treatment," Singh said of the persisting mercury poisoning.

"This is Canada's fault and Canada must step up."

Lawsuit seeks to restore 'way of life'

Grassy Narrows, about 150 kilometres from Dryden near the Ontario-Manitoba border, is being represented by both Toronto-based firm Cavalluzzo LLP and Ratcliff LLP out of Vancouver.

At this point, there is no set dollar amount for how much compensation the First Nation is seeking. However, the types of remedies relate to restoring the environment, "upon which their health, and their livelihoods and their treaty rights depend," Adrienne Telford, co-lead legal counsel with Cavalluzzo LLP, said in an interview with CBC News.

"Grassy Narrows is a community in crisis," Telford said. "They require significant financial, and socioeconomic and health supports to allow community members to restore their health, and their well-being and their way of life."

"If this was Ontario cottage country, the river would have been cleaned up decades ago, the pollution would have stopped and the harms properly compensated."

Ontario commits to 'correcting this historic wrong'

When pressed by Kiiwetinoong MPP Sol Mamakwa during Monday's question period in the Ontario Legislature, the minister of the environment, conservation and parks, Andrea Khanjin, said the government is committed to remediating the mercury contamination.

Technical experts with the ministry have met with First Nations leaders and those who led the Western University study — though additional work is needed before the researchers' report is finalized, Khanjin said.

Is Ontario doing enough to address mercury contamination in the English-Wabigoon River system?

Sandy Shaw, MPP for Hamilton West—Ancaster—Dundas and NDP environment, conservation and parks critic, called that answer "disappointing."

"This is a human and ecological disaster and it has been going on for generations. For heaven's sake, Speaker, the time for studies has well passed," Shaw said.

• Grassy Narrows chief announces candidacy for Ontario regional chief
• Grassy Narrows chief calls out Ottawa for 'ridiculous' delays to mercury treatment centre construction

Khanjin responding by pointing to the work being done with Ontario's English and Wabigoon Rivers Remediation Panel .

"We're taking the politics out of this and referring to the science because this government remains committed to correcting this historic wrong."

ABOUT THE AUTHOR

Sarah Law is a CBC News reporter based in Thunder Bay, Ont., and has also worked for newspapers and online publications elsewhere in the province. Have a story tip? You can reach her at [email protected]

With files from Philip Lee-Shanok and Chris Glover

Related Stories

• video First Nations Land Defence Alliance says no nuclear waste facility without First Nations consent

Advertisement

Supported by

What to Know About Claudia Sheinbaum, Mexico’s Newly Elected President

Here are five key insights into Mexico’s new president as people wonder whether she will diverge from Andrés Manuel López Obrador’s policies or focus on cementing his legacy.

• Share full article

By Natalie Kitroeff

Reporting from Mexico City

Claudia Sheinbaum’s list of accolades is long: She has a Ph.D in energy engineering, participated in a United Nations panel of climate scientists awarded a Nobel Peace Prize and governed the capital, one of the largest cities in the hemisphere.

On Sunday, she added another achievement to her résumé: becoming the first woman elected president of Mexico.

Ms. Sheinbaum, 61, captured at least 58 percent of the vote in a landmark election on Sunday that featured two women competing for the nation’s highest office — a groundbreaking contest in a country long known for a culture of machismo and rampant violence against women.

Mexico Election Results: Sheinbaum Wins

See results and maps for Mexico’s 2024 presidential election.

“For the first time in 200 years of the republic, I will become the first female president of Mexico,” she said. “And as I have said on other occasions, I do not arrive alone. We all arrived, with our heroines who gave us our homeland, with our ancestors, our mothers, our daughters and our granddaughters.”

Now that she has clinched the presidency, Ms. Sheinbaum’s next hurdle will be stepping out of the shadow of her predecessor and longtime mentor, Andrés Manuel López Obrador, the outgoing president.

She and Mr. López Obrador are “different people,” she said in an interview. He’s an oilman who invested in environmentally questionable projects; she’s a climate scientist. Yet Ms. Sheinbaum has appealed to voters mainly by promising to cement his legacy, backing moves like his big bet on the national oil company and proposed constitutional changes that critics call antidemocratic.

Their alliance has also left many Mexicans asking: Can Ms. Sheinbaum be her own leader? Or will she just be his pawn?

“There’s this idea, because a lot of columnists say it, that I don’t have a personality,” Ms. Sheinbaum complained to reporters earlier this year. “That President Andrés Manuel López Obrador tells me what to do.”

She insists she will govern independently from Mr. López Obrador and has some different priorities. But veering too far from his agenda could be very risky.

Here are five things to know about the newly elected president of Mexico that help inform whether she will stray from Mr. López Obrador’s policies or dedicate herself to cementing his legacy.

1. Sheinbaum will inherit a host of challenges.

A former ballet dancer, Ms. Sheinbaum calls herself “obsessive” and “disciplined.” But discipline may not be enough, analysts say.

As president, she already stands to inherit a long list of troubles. The state-owned oil company is buckling under debt, migration through the country has reached historical highs and cartel violence continues to torment the country.

She has said she would continue Mr. López Obrador’s policy of addressing the drivers of violence instead of waging war on the criminal groups, but will also work to lower rates of impunity and build up the national guard.

With a U.S. presidential election just months away, she told The New York Times that she was prepared to work with whichever candidate wins. Publicly, she has echoed Mr. López Obrador’s emphasis on tackling migration by addressing its root causes.

In a hint of potential change, she said in a recent debate that she would seek to reform the c ountry’s migration authority , an agency often accused of corruption.

2. She’s seen as reserved, even aloof.

The Times spoke with two dozen people who have worked with or know Ms. Sheinbaum and also visited campaign events, reviewed her writings and her media appearances and interviewed her, once in 2020 and again this year.

What became clear is that Ms. Sheinbaum, (pronounced SHANE-balm), has long seemed more comfortable quietly getting things done than selling herself or her achievements.

The granddaughter of Jewish immigrants who fled Europe, she rarely discusses being Jewish or almost anything about her personal life, colleagues say. When interviewers ask her about the Nobel Prize she shared with a panel of climate researchers, she notes how many others were involved in the work.

She is known as a tough boss with a quick temper who can inspire in her staff fear and adoration at the same time. Publicly, though, her affect is so controlled it verges on aloof.

Some say her professorial demeanor could pose a challenge in a political landscape defined by Mr. López Obrador, who built his party into a juggernaut by relying on the force of his personality.

“She needs him,” said Carlos Heredia, a Mexican political analyst. “She doesn’t have the charisma, she doesn’t have the popularity, she doesn’t have the political stamina of her own, so she needs to borrow that from López Obrador.”

For some Mexicans, however, a thrills-free woman may be an ideal antidote to an entertaining man who plunged the country into partisan turmoil.

3. She’s long sought to keep Mr. López Obrador happy.

The candidate’s political career began when Mr. López Obrador was elected mayor of Mexico City in 2000 and invited her to a meeting at a diner. “What I want is to reduce pollution,” she recalled Mr. López Obrador telling her. “Do you know how to do that?”

Ms. Sheinbaum, who by then had written more than a dozen reports on energy use and carbon emissions, said yes. She became his environment minister. In meetings, she seemed willing to do almost anything to make her boss happy, according to several people who worked with her.

“The phrase she used over and over again was ‘The mayor said to,’” said Mr. Heredia, who worked with her in city government under Mr. López Obrador. What that meant, according to Mr. Heredia: “We are not a cabinet for giving ideas,” he said. “We are a group of people here to execute what he decides.”

In the years that followed, Ms. Sheinbaum straddled academia and politics, but she always stayed close to Mr. López Obrador. When he founded his Morena party in 2014, he asked her to run on the party’s ticket to become mayor of Tlalpan, a borough of Mexico City. With his backing, she won.

4. She is known for being a demanding boss.

In 2018, Mr. López Obrador was swept into the presidency in a landslide and Ms. Sheinbaum became Mexico City’s mayor. She quickly gained a reputation as an exacting boss.

“One doesn’t go to her meetings to tell her, ‘I’m working on it,’” said Soledad Aragón, a former member of Ms. Sheinbaum’s cabinet. When she walked into a room, Ms. Aragón said, everyone sat up straight.

As mayor, she could remember specific numbers mentioned in a meeting weeks after it occurred, Ms. Aragón said, calling her “brilliant” and “demanding,” especially of herself, adding: “It has gotten results.”

Five officials who have worked with Ms. Sheinbaum, who were not authorized to speak publicly, said that she was quick to anger at times and would yell at her subordinates in front of large groups. Through a spokesman, Ms. Sheinbaum declined to comment on the accusation.

Her defenders say some people merely reacted badly to a woman in charge.

“I know that in her government, sometimes people got offended or felt bad because she yelled at them,” said Marta Lamas, a longtime feminist activist who has been close to Ms. Sheinbaum and her team. “But if a man yells, it wouldn’t be an issue because culturally, it’s different.”

“People say it in a critical way: ‘She’s tough,’” Ms. Aragón said. “What do you want, someone soft in charge of the city?”

5. She is a true believer in Mr. López Obrador’s vision.

For years, Ms. Sheinbaum has tried to explain how she can be so in step with Mr. López Obrador while also being herself. The answer, she says, is simple: She genuinely believes in him.

In 2022, a radio host asked her a pointed question from a female listener: “Why don’t you choose to be a woman who governs with her own ideas? Why don’t you get out of AMLO’s circus?” she asked, using Mr. López Obrador’s nickname. “Why have the same rhetoric with the same words?”

Ms. Sheinbaum didn’t hesitate.

“If you think the same as another person, it’s not that you’re copying them; you just agree with the ideas,” she said. “You can’t deny what you believe.”

Emiliano Rodríguez Mega contributed reporting.

Natalie Kitroeff is the Mexico City bureau chief for The Times, leading coverage of Mexico, Central America and the Caribbean. More about Natalie Kitroeff