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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

Lompoc Water Utility Division

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

MORE ABOUT THIS CONTAMINANT

 

30

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.134 ppb1211ND - 0.410 ppb
2014ND80ND
2015ND10ND
2016N/A00N/A
2017N/A00N/A
2018ND90ND
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-01-15B3A1726-05A0.0320 ppb
2013-01-15B3A1726-07A0.310 ppb
2013-01-15B3A1726-01AND
2013-01-15B3A1726-03A0.410 ppb
2013-04-02B3D0531-030.0510 ppb
2013-04-02B3D0531-010.0440 ppb
2013-07-09B3G1211-010.300 ppb
2013-07-09B3G1211-030.320 ppb
2013-07-09B3G1208-030.0450 ppb
2013-07-09B3G1208-010.0320 ppb
2013-10-08B3J1192-030.0330 ppb
2013-10-08B3J1192-010.0320 ppb
2014-11-183761-011-0802ND
2014-11-183761-013-0755ND
2014-11-183761-007-0830ND
2014-11-183761-006-0810ND
2014-11-183761-004-0824ND
2014-11-183761-003-0817ND
2014-11-193761-008-0822ND
2014-11-193761-016-0836ND
2015-03-043761-009-1108ND
2018-01-035867-002-1112ND
2018-01-035867-012-1027ND
2018-01-115867-013-1012ND
2018-01-115867-011-1029ND
2018-01-185867-016-1010ND
2018-01-185867-008-1056ND
2018-01-185867-006-1034ND
2018-01-245867-009-1023ND
2018-04-195867-007-1057ND