Hexavalent chromium levels in a sampling of U.S. cities

Water supplies in 31 of 35 cities tested in 2009, including Bethesda and the District, contained hexavalent chromium (Chromium-6), a possible carcinogen featured in the film "Erin Brockovich."

More coverage: Study finds probable carcinogen in 31 U.S. cities' tap water

Read the full Environmental Working Group study

City Chromium-6 level (parts per billion)
Norman, Okla. 12.90
Honolulu, Hawaii 2.00
Riverside, Calif. 1.69
Madison, Wisc. 1.58
San Jose, Calif. 1.34
Tallahassee, Fla. 1.25
Omaha, Neb. 1.07
Albuquerque, N.M. 1.04
Pittsburgh, Penn. 0.88
Bend, Ore. 0.78
Salt Lake City, Utah 0.30
Ann Arbor, Mich. 0.21
Atlanta, Ga. 0.20
Los Angeles, Calif. 0.20
Bethesda, Md. 0.19
Phoenix, Ariz. 0.19
Washington, D.C. 0.19
Chicago, Ill. 0.18
Milwaukee, Wisc. 0.18
Villanova, Penn. 0.18
Sacramento, Calif. 0.16
Louisville, Ky. 0.14
Syracuse, N.Y. 0.12
New Haven, Conn. 0.08
Buffalo, N.Y. 0.07
Las Vegas, Nev. 0.06
New York, N.Y. 0.06
Scottsdale, Ariz. 0.05
Miami, Fla. 0.04
Boston, Mass. 0.03
Cinncinnati, Ohio 0.03
Indianapolis, Ind. 0.00
Plano, Texas 0.00
Reno, Nev. 0.00
San Antonio, Texas 0.00
SOURCE: Environmental Working Group. By Greg Linch and Wilson Andrews / The Washington Post - Dec. 20, 2010.

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