Drinking water supplies for at least six million Americans contain toxic industrial chemicals at levels that exceed the U.S. Environmental Protection Agency’s (EPA) recommended safety limit. This number is likely an underestimate since the information available through the EPA does not include data for about one-third of Americans—those 100 million or more people who rely on private wells or the vast majority of public water systems that serve communities with populations of 10,000 or less. These are the conclusions of a new study whose authors include scientists at the Harvard T.H. Chan School of Public Health, the University of California at Berkeley and the California Department of Toxic Substances Control.
The study “is just showing us the tip of the iceberg,” says author Philippe Grandjean, Harvard T.H. Chan adjunct professor of environmental health and University of Southern Denmark professor of environmental medicine. What also remains largely undocumented is the extent of exposure to workers on the frontline of this chemical use.
While industrial sites were previously recognized as sources of these highly fluorinated, toxic and environmentally-persistent compounds, this is the first nationwide study to document that wastewater treatment plants, along with military bases and airports where these chemicals are used in fire-fighting foams, are also contributing significantly to drinking water contamination. The study reports groundwater and surface water near some of these bases and airports with concentrations of these chemicals 1,000 to 10,000 times higher than the EPA’s health advisory level for drinking water….
Detection of Poly- and Perfluoroalkyl Substances (PFASs) in U.S. Drinking Water Linked to Industrial Sites, Military Fire Training Areas, and Wastewater Treatment Plants
Source: Xindi C. Hu, David Q. Andrews, Andrew B. Lindstrom, Thomas A. Bruton, Laurel A. Schaider, Philippe Grandjean, Rainer Lohmann, Courtney C. Carignan, Arlene Blum, Simona A. Balan, Christopher P. Higgins, and Elsie M. Sunderland, Environmental Science & Technology Letters, August 9, 2016