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Groundwater is the water contained in aquifers (Figure 4.7). This is replenished or recharged by precipitation that percolates through the soil to the water table, and
Community water systems obtain water from two sources: surface water and ground water. People use surface and ground water every day ...
Fresh surface-water sources, such as rivers and lakes, only constitute about 22,300 cubic miles (93,100 cubic kilometers), which is about 1/150th of one percent ...
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Community water systems obtain water from two sources: surface water and ground water. People use surface and ground water every day ...
Fresh surface-water sources, such as rivers and lakes, only constitute about 22,300 cubic miles (93,100 cubic kilometers), which is about 1/150th of one percent ...