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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Placer CWA - Auburn/Bowman

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.

MORE ABOUT THIS CONTAMINANT

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND80ND
2014ND90ND
2015ND20ND
2016ND20ND
2017N/A00N/A
2018ND20ND
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
2013-09-23201309240385AMND
2013-09-23201309240387AMND
2013-09-23201309240389AMND
2013-09-23201309240383AMND
2013-12-10201312110629AMND
2013-12-10201312110631AMND
2013-12-10201312110633AMND
2013-12-10201312110635AMND
2014-03-03201403040151AMND
2014-03-03201403040149AMND
2014-03-03201403040153AMND
2014-06-11201406120354AMND
2014-06-11201406120358AMND
2014-06-11201406120360AMND
2014-06-11201406120356AMND
2014-08-063334-004-0930ND
2014-08-063334-002-1045ND
2015-08-133334-002-0800ND
2015-08-133334-004-1315ND
2016-08-162113-004-0910ND
2016-08-162113-002-1030ND
2018-08-157473-004-1200ND
2018-08-157473-002-1000ND
2019-08-227473-004-1100ND
2019-08-227473-002-0840ND