Water Pollution
Water covers over 70% of the Earth’s surface and is a very important resource for people and the environment. Water pollution affects drinking water, rivers, lakes and oceans all over the world. This consequently harms human health and the natural environment.
We all need clean water. People need it to grow crops and to operate factories, and for drinking and recreation. Fish and wildlife depend on it to survive. Many different pollutants can harm our rivers, streams, lakes and oceans. The three most common are soil, nutrients and bacteria. Rain washes soil into streams and rivers. The soil can kill tiny animals and fish eggs. It can clog the gills of fish and block light so plants die. Nutrients, often from fertilizers, cause problems in lakes, ponds and reservoirs. Nitrogen and phosphorus make algae grow and can turn water green. Bacteria, often from sewage spills, can pollute fresh or salt water.
Causes of water pollution are the sewage and wastewater, marine dumping, industrial waste, radioactive waste, oil pollution, underground storage leakages, atmospheric deposition, global warming, eutrophication.
Dirty water is the world's biggest health risk, and continues to threaten both quality of life and public health. When water from rain and melting snow runs off roofs and roads into the rivers, it picks up toxic chemicals, dirt, trash and disease-carrying organisms along the way.
We all need clean water. People need it to grow crops and to operate factories, and for drinking and recreation. Fish and wildlife depend on it to survive. Many different pollutants can harm our rivers, streams, lakes and oceans. The three most common are soil, nutrients and bacteria. Rain washes soil into streams and rivers. The soil can kill tiny animals and fish eggs. It can clog the gills of fish and block light so plants die. Nutrients, often from fertilizers, cause problems in lakes, ponds and reservoirs. Nitrogen and phosphorus make algae grow and can turn water green. Bacteria, often from sewage spills, can pollute fresh or salt water.
Causes of water pollution are the sewage and wastewater, marine dumping, industrial waste, radioactive waste, oil pollution, underground storage leakages, atmospheric deposition, global warming, eutrophication.
Dirty water is the world's biggest health risk, and continues to threaten both quality of life and public health. When water from rain and melting snow runs off roofs and roads into the rivers, it picks up toxic chemicals, dirt, trash and disease-carrying organisms along the way.
Example of water pollution
In this photo is the other part of the river but in this case there is not houses but the river is contaminate because the people throw crash there and there are giant steps of garbage and the river is threatened for all of us.
In my neighborhood
In this photo you can see the water have different color is color brown and is because the people that live there throw out all the trash there. And there are some terraces where you can go much close to the river