When raw sewage, industrial waste, and other pollutants are discharged into natural and man-made water bodies such as rivers, reservoirs, streams, and lakes. Global warming, atmospheric deposition and eutrophication are some other causes of water pollution. The contamination of water not only harms aquatic marine life, but also affects the quality of drinking water, consequently harming human health. In fact, water-borne diseases such as cholera, malaria, and typhoid fever are the leading causes of death in the developing world. Given that this is a rising global problem, governments are paying more and more attention to the need for preventing and controlling the risks of water pollution, as well as improving access to sanitation facilities.