Man is the main cause of water pollution.
People pollute the water with chemicals and other hazardous materials. People have no regard to water – their source of life. There are many sources of water pollution but it is not the source that is really causing the problem but the improper disposal of the pollutants.
Aside from improper and careless waste disposal, another main cause of water pollution is toxic substances coming from industrial, agricultural and domestic use. Trace elements of lead, cadmium, mercury, dioxins are detected in different water sources which sometimes accumulate in the water supply causing health problems. These toxic substances come from industries such mining, power plants, automobile manufacturers and others that produce toxic substances leading to bodies of water. Apart from these industries, these toxic materials contaminate the water through accidents like chemical or oil spills.
One more main cause of water pollution is the presence of excessive nutrients in the water. Excess nutrients in water also result to excessive growth of algae that deprive aquatic plants and animals adequate levels of oxygen to survive.
Lastly, another considerable main cause of water pollution is sedimentation. Although it is hard to imagine how soil particles can contribute to water pollution, but it does.
Humans greatly affect the environment.
