Natural water is tied to the well-being of human beings. Animals and plants of prosperity: water on the soil surface in each day. We need a lot of water, both in the field of consumer, such as fisheries and agriculture, etc. If you leave a dirt, such as waste or wastewater. It is located in a natural water source, the water becomes wastewater. Later, when natural water become polluted water will be harmful to the lives of the people. Plants and animals. May extend the entire width of the danger area, far away from surrounding communities.