GREEN
12/19/2010 03:00 pm ET | Updated May 25, 2011

Probable Carcinogen Hexavalent Chromium Found In Drinking Water In 31 Cities

An environmental group that analyzed the drinking water in 35 cities across the United States, including Bethesda and Washington, found that most contained hexavalent chromium, a probable carcinogen that was made famous by the film "Erin Brockovich."

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