Around 43 million people in the U.S. use drinking water from private wells. 20% of surveyed wells contained enough contaminants to affect human health.
Water Facts / Fact Details
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The U.S. Geological Survey reports in a press release dated March 23, 2009 that more than 20 percent of private wells surveyed contained at least one contaminant at a high enough level to raise health concerns.
Source: U.S. Geological Survey