Pollution of ground water is a serious water pollution issue that is largely out of sight. Pollution that seeps into the soil is gone as far as the people that created it are concerned; however, if it moves through that soil it can eventually contaminate groundwater. This polluted groundwater might be the source of drinking, industrial, or irrigation water. This figure shows the many potential sources of groundwater pollution. Note that the source of groundwater pollution, like other types of water pollution, is not necessarily in same place as the source of the polluted water. This is because the water moves laterally underground just as it does above ground. There is a very interesting recycling technique that millions of people in the U.S. practice. When a home relies on a well for its drinking water, it may also rely on an on-site sewage treatment of wastewater. This treated water is likely to be unknowingly recycled. Basically, water used in the home is introduced into the field adjacent to the home. This wastewater leaches through the soil and reaches the water table; then, the water is pumped through the home s well and reutilized by the people living in the home. Protection of ground water quality in Washington State from pollution is one of the state s highest priorities environmentally. Washington State has a policy of no net degradation of groundwater within the state.
Tiếng Việt