Study Finds Probable Carcinogen in Tap Water of 31 U.S. Cities

A new analysis shows the presence of a probable carcinogen in the tap water of 31 cities across the country, raising questions about possible risks posed to consumers and how they can reduce their exposure. Lynn Goldman, M.D., M.P.H., says this finding raises the issue of a national drinking water standard for hexavalent chromium and why we don't have one.

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Marcia Firmani, PhD, MSPH, was appointed associate dean for health sciences, effective June 2026. She has served as interim associate dean since January 2026.
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