Yoshi Shimizu - IFRC
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In the United States, billions of gallons of groundwater are withdrawn daily for drinking water, agriculture, and other important uses. Unlike surface water sources, groundwater is not required meet strict standards for quality because the subsurface is assumed to filter out impurities. However, at thousands of hazardous waste sites across the U.S., chemicals have historically been released to the ground, sunk to the water table, and contaminated groundwater supplies.