Abstract
The presence of hexavalent chromium in drinking water isn't new, but recent media attention and pending regulations have left utilities with unanswered questions. After the Environmental Working Group (EWG) reported the presence of hexavalent chromium ‐ also called chromium 6 and Cr+6 ‐ in 35 U.S. cities, the U.S. Environmental Protection Agency (USEPA) recommended in January 2011 that utilities begin voluntarily testing for the contaminant. The article includes a discussion of the unanswered questions related to the following topics: voluntary data collection; public notification; sampling problems; health risks; MCLs; unregulated contaminant monitoring; and, competing regulations.
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