USGS report `contaminants in groundwater used for public supply` released

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The US Geological Survey (USGS) a unit of the Interior Department, has released a study of untreated water samples from 932 public wells across the nation.  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 including herbicides, insecticides, solvents, disinfection by-products, nitrate, and gasoline chemicals. Man-made contaminants accounted for about one-quarter of contaminant concentrations greater than human-health benchmarks, but were detected in 64 percent of the samples, predominantly in samples from unconfined aquifer. The May 21, 2010 NAWQA Full report is postedat http://pubs.usgs.gov/circ/1346/pdf/circ1346.pdf

Customer comments

  1. By Patrick Halliday on

    This report is an example of why we need a solution for clean pure drinking water. I found mine at www.pwfa.us