Tuesday, December 21, 2010

31 cities’ tap water has cancer-causing hexavalent chromium, study says

The Environmental Working Group released a report Monday indicating that millions of Americans are regularly drinking hexavalent chromium, made famous in the film "Erin Brockovich" as a carcinogen, through their tap water.

The group -- whose study was first reported in a story Sunday by the Washington Post's Lyndsey Layton -- tested water from 35 U.S. cities and found that samples from 31 cities contained hexavalent chromium. The highest concentrations were found in Norman, Okla.; Honolulu; and Riverside, Calif. The substance had been a widely used industrial chemical for decades and has evidently leached into the groundwater in many areas.

[Related: Drilling ban follows concern over flammable water]

[Related: Leaking ice raises tricky climate issue]

[List: America's most polluted cities]

The list of cities found to have hexavalent chromium in the municipal water supplies

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