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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

Placer County Water Agency - Foothill

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).

 

24

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.166 ppb15150.0490 ppb - 1.30 ppb
2015ND20ND
2016ND40ND
2017ND30ND
2018N/A00N/A
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
2014-03-04201403050499AM0.1000 ppb
2014-03-04201403050501AM0.110 ppb
2014-03-04201403050497AM0.130 ppb
2014-06-10201406110959AM0.0620 ppb
2014-06-10201406110963AM0.0740 ppb
2014-06-10201406110965AM0.0690 ppb
2014-06-10201406110961AM0.0850 ppb
2014-09-02201409030611AM0.0490 ppb
2014-09-02201409030609AM0.0490 ppb
2014-09-02201409030615AM0.150 ppb
2014-09-02201409030613AM0.0510 ppb
2014-12-10201412110730AM0.1000 ppb
2014-12-10201412110734AM0.0680 ppb
2014-12-10201412110732AM0.0990 ppb
2014-12-299590-014-09551.30 ppb
2015-08-115810-007-1305ND
2015-08-115810-002-1000ND
2016-03-301233-014-1626ND
2016-08-031233-014-1045ND
2016-08-171233-007-0945ND
2016-08-171233-002-1215ND
2017-08-081233-007-0900ND
2017-08-081233-002-1120ND
2017-08-221233-014-1040ND