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. To mingle in natural water, the water becomes polluted water at a later time. When the gallbladder becomes a source of waste 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.