Effects of Water Pollution On The Environment
Edited by Melanie N Hayes, Sharingknowledge, SmartyPants, Jen Moreau and 1 other
Over 70% of the earth is covered by water however, of that 70%, less than 3% is freshwater. Freshwater becomes an even smaller percentage of the earth's water when you consider that only about 0.3% fresh water is found in lakes, rivers, and swamps. Of all the water on Earth, more than 99 percent of Earth's water is unusable by humans and many other living things . This leaves a very small percentage of accessible fresh water. This small percentage is what makes the development of water pollution and in rivers, lakes, and oceans worldwide so problematic.
Water pollution occurs when contaminants enter the groundwater, rivers, streams, lakes or oceans. Most water pollution is caused by humans from industrial waste, fertilizers, untreated sewage,underground storage leaks, marine dumping and oil pollution have caused much of this damage.
Water Pollution: Incidence and Causes
Every day, 2 million tons of sewage and industrial and agricultural waste are discharged into the world's water, the equivalent of the weight of the entire human population of 6.8 billion people.
- 1The UN estimates that the amount of wastewater produced annually is about 1,500 km3 six times more wastewater than exists in all the rivers of the world .Sewage Waste.Advertisement
- 2Worldwide, 2.5 billion people live without improved sanitation. Lack of adequate sanitation contaminates water courses worldwide and is one of the most significant forms of water pollution.
- 3From plastic bags to pesticides - most of the waste we produce on land eventually reaches the oceans, either through deliberate dumping or from run-off through drains and rivers.80% of marine pollution comes from land based activities.
- 4This continued until the 1970s, with dumping at sea the accepted practice for disposal of nearly everything, including toxic material such as pesticides, chemical weapons, and radioactive waste .For centuries, the oceans have been a convenient dumping ground for waste generated on land.
- 5Asbestos, metallic elements, lead, and mercury are non-biodegradable and difficult to dispose. Lead and mercury cause problems with human health and development as well animals, and the ecosystem's health and development.Toxic Material Dumping.
- 6They are often washed into the water from nearby soils and cause toxic blue green algae and an over bloom of green algae which blocks oxygen and sunlight from entering the waters.Fertilizers are the leading contributor of nitrates and phosphates.
- 7The oil industries pollution kills thousands of animal species with one spill. Runoffs and dumping of oil into the water system happen every day. Oil spills only count for 12% of the oils  that enter the ocean however the concentrated and larger amounts cause a great deal of harm. They can destroy whole ecosystems and are not easy or cheap to clean up.Oils.
Non Industrial Causes
Water Pollution: Effects
Not only does water pollution cause the death of many organisms, it also disrupts entire ecosystems. 55% of over 300 freshwater species have declined because of Water pollution, while 32% of the salt water and land species have declined.In developing countries, water pollution is a leading cause of death 
- 1Disease such as cholera and hepatitis come from eating seafood poisoned by water pollution, and drinking contaminated water. Severe water contamination occurs in developing and developed countries. For example, Flint, Michigan in the United States and Walkerton Ontario have had devastating water crisis, while drinking water advisories occur daily in communities across Canada and the United States.Diseases.
- 2The increased deaths of aquatic animals because of water pollution is a large concern. Organisms large and small are killed by water pollution. High concentrations of plastic material, particularly plastic bags, have been found blocking the breathing passages and stomachs of many marine species, including whales, dolphins, seals, puffins, and turtles. Plastic six-pack rings for drink bottles can also choke marine animals .Aquatic Animals.
- 3The food chain is disrupted when cadmium, lead, and other pollutants are eaten by small animals. These small animals are then eaten by shellfish, fish, and others, who are then eaten by birds or larger fish or mammals including people.Food Chain.
- 4From the cost of purifying water, clean-up operations, to the loss of revenue from fisheries and tourism.Finances.
there are significant costs associated with water pollution.
- 1Water pollution affects everything from sports activities to staying alive, from diseases to the food we eat.
Facts about Water pollution
- 1Fresh water is used for irrigation (70%), industry (22%), and domestic use (8%).
- 2One half of the world's population have health difficulties due to water based diseases (about 250 million people per year, resulting between 5 & 10 million deaths.
- 3In the United States alone 1.2 trillion gallons of storm water, industrial waste, and sewage is let into their waters every year .
- 4In North America 47% of the lakes and 40% of the rivers are too polluted for swimming, fishing, or aquatic life .
- 5In the United States over 200 million gallons of motor oil are improperly disposed, dumped in the ground or left in the garbage .
- 6A cruise ship can generate 3.8 million liters of greywater, 796 thousand liters of sewage, 150 thousand liters of oily bilge water, 8,128 kgs of solid waste, and other toxic wastes every week .
Water Pollution Disasters
- The largest oil spill ever was caused intentionally. During the 1991 Gulf War, over 250 million gallons of crude oil were dumped into the Persian Gulf. Oil wells in Kuwait were burnt, leading to toxins in the land, air, and water .
- In 2010, BP oil spilled a huge amount of oil that covered 120 miles of the Louisiana coast were polluted by the spill. Over a thousand birds and aquatic animals died immediately. Much more followed with only 6% of the wildlife being cleaned. In 2012 the American government and BP agreed to a settlement of 4.5 billion.
- The Transocean Oil rig exploded in 2010, killing 11 workers. As one of the United States biggest environmental disasters the Gulf of Mexico was severely damaged .
- In 2011, a Tsunami (a powerful earthquake in the sea) raised the water level on the Japanese coast. The water damaged 4 of the 6 nuclear reactors from a Power Plant. Scientists still do not know the amount of damage and water pollution that occurred .
- 1Turn off taps when you brush teeth, use low flow toilets and shower heads. #Wash cars at car washes that reuse their gray water.Reduce the amount of water you use.
- 2Reuse your gray water or simply containers or other items around the home or office the less garbage we create the less garbage that can go into the water.
- 3Recycle, if we do not have to create as much home and industry can both cut down on fresh water used and toxins released.
- 4Many materials can be recycled including glass, plastic, paper and more If we can recycle paper we have more paper and less waste.Dispose of Recycling properly, most of us have access to recycling depots and Technology.
- 5There will be places to safely get rid of them.Dispose of garbage properly oils, medicines, computers, batteries none of these are to go in household waste.
- 6Buy from industries and business who are responsible for eliminating and getting rid of their waste responsibly.
- 7Encourage environmentally responsible companies by supporting them and their healthier alternatives.
- 8Write your government officials to let them know you support environmentally reasonable practices.
- 9There are a lot of good people doing a lot of great things.Support freshwater and water clean up initiatives and technology.
- 10Keep informed!
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Effects of Water Pollution On The Environment. (2019). In ScienceAid. Retrieved Oct 22, 2019, from https://scienceaid.net/Effects_of_Water_Pollution_On_The_Environment
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Recent edits by: Jen Moreau, SmartyPants, Sharingknowledge