Contaminants Lurk in the Groundwater Used for Public Supply

More than 20 percent of untreated water samples from public wells across the U.S. contained at least one contaminant at levels of potential health concern.

About 105 million people in the United States receive their drinking water from public water systems that rely on groundwater pumped from public wells

Eurekalert repots:

“Findings showed that naturally occurring contaminants, such as radon and arsenic, accounted for about three-quarters of contaminant concentrations greater than human-health benchmarks ... Man-made contaminants were also found in untreated water sampled from the public wells, including herbicides, insecticides, solvents, disinfection by-products, nitrate, and gasoline chemicals.”

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