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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Sardis Water Association

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0192 ppb131ND - 0.250 ppb
2015ND30ND
2016N/A00N/A
2017ND40ND
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
2014-04-02140930020ND
2014-04-02140930019ND
2014-06-26Y141770045ND
2014-06-26Y141770046ND
2014-06-26Y141770044ND
2014-06-26Y141770048ND
2014-06-26Y141770047ND
2014-09-10Y142540028ND
2014-09-10Y1425400270.250 ppb
2014-12-10Y143440017ND
2014-12-10Y143440018ND
2014-12-10Y143440020ND
2014-12-10Y143440019ND
2015-01-13Y150160020ND
2015-03-11Y150710030ND
2015-03-11Y150710031ND
2017-02-20Y170550003ND
2017-02-27Y170610032ND
2017-04-04Y170960006ND
2017-05-15Y171380001ND
2018-02-07Y180400046ND
2019-01-07Y190110019ND
2019-01-30Y190310040ND