Water pollution have natural origins: due to the rain, snow melt, wind storms, floods put into dirty waste water environment, harmful organisms including dead bodies. Water pollution of artificial origin: the process of toxic wastewater mostly liquid form as the living waste, industry, agriculture, transportation on the water environment. According to the nature of the cause of pollution, we split up the categories water pollution: inorganic, organic pollution, chemical pollution, biological contamination, contamination by physical agents. Salt water contamination, groundwater and marine pollution.
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