In addition to environmental pollution, including pollution of the water environment. The cause stems from the lack of consciousness of the people living in that invisible content harm it causes water pollution in the River next to it, then the source of spam will go across state lines carry bacteria that we can't see. So we're going to get the water source that drinking, washing, bathing, .... and then the germs will produce on the body carry these diseases kill many. In many areas, manure and waste water is not treated that back to the circulation of the water. Wastewater not treated flow in parallel and ponds causes lack of oxygen for many animals and plants cannot survive. According to the WHO in 2008, there were about 2.6 billion people do not have access to the sanitary. This is the cause why the cities, water contaminated by human secretion. Each year there are about 1.5 million deaths related to wastewater not treated. In urban areas, the choice of the location or the toilet waste dump do not good also as pathogens can infuse into the groundwater. In addition, air, waste oils, detergents, plant protection drugs, chemical fertilizers used in the industry to pollute groundwater.
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