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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Pico WD

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).

 

20

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND40ND
20150.323 ppb12120.0710 ppb - 0.530 ppb
2016N/A00N/A
2017ND40ND

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
2014-10-219588-004-0800ND
2014-10-219588-006-1020ND
2014-10-219588-011-1135ND
2014-10-299588-009-1159ND
2015-03-265C26043-09A0.380 ppb
2015-03-265C26043-05A0.260 ppb
2015-03-265C26043-07A0.310 ppb
2015-03-265C26043-11A0.310 ppb
2015-03-265C26043-01A0.0710 ppb
2015-03-265C26043-03A0.530 ppb
2015-09-025I02024-05A0.290 ppb
2015-09-025I02024-07A0.290 ppb
2015-09-025I02024-11A0.290 ppb
2015-09-025I02024-09A0.530 ppb
2015-09-025I02024-03A0.520 ppb
2015-09-025I02024-01A0.1000 ppb
2017-10-249588-004-0839ND
2017-10-249588-011-0755ND
2017-10-249588-009-0813ND
2017-10-249588-006-0825ND