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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Crystal Clear WSC

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

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36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0755 ppb132ND - 0.554 ppb
20150.0345 ppb152ND - 0.287 ppb
2016ND30ND
2017ND20ND
2018ND10ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2014-09-04AC65820ND
2014-10-28Q1454120005ND
2014-10-28Q1454120011ND
2014-10-28Q14541200010.554 ppb
2014-10-28Q1454120021ND
2014-10-28Q1454120003ND
2014-10-28Q1454120019ND
2014-10-28Q1454120023ND
2014-10-28Q14541200170.428 ppb
2014-10-28Q1454120013ND
2014-10-28Q1454120015ND
2014-10-28Q1454120009ND
2014-10-28Q1454120007ND
2015-01-26Q1502588009ND
2015-01-26Q1502588001ND
2015-01-26Q1502588011ND
2015-01-26Q1502588003ND
2015-04-22Q1514967013ND
2015-04-22Q1514967015ND
2015-04-22Q15149670010.287 ppb
2015-04-22Q1514967005ND
2015-04-22Q1514967003ND
2015-04-22Q1514967017ND
2015-04-22Q1514967019ND
2015-04-22Q15149670110.230 ppb
2015-04-22Q1514967007ND
2015-04-22Q1514967009ND
2015-07-30AD01724ND
2016-03-16AD28986ND
2016-03-16AD28987ND
2016-06-07AD39521ND
2017-02-07AD69105ND
2017-02-07AD69104ND
2018-08-09AE36246ND
2019-01-28AE51536ND
2019-01-28AE51535ND