Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chromium (total)

Placer County Water Agency - Foothill

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

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0863 ppb166ND - 0.300 ppb
2015ND20ND
2016ND40ND
2017ND10ND
2018ND30ND
2019ND30ND

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
2014-03-04201403050499AMND
2014-03-04201403050501AMND
2014-03-04201403050497AMND
2014-06-10201406110959AMND
2014-06-10201406110965AMND
2014-06-10201406110963AMND
2014-06-10201406110961AMND
2014-08-203334-007-1200ND
2014-08-203334-002-1010ND
2014-09-02201409030611AM0.200 ppb
2014-09-02201409030613AM0.210 ppb
2014-09-02201409030615AM0.300 ppb
2014-09-15201409160463AMND
2014-12-10201412110732AM0.220 ppb
2014-12-10201412110730AM0.230 ppb
2014-12-10201412110734AM0.220 ppb
2015-08-113334-002-1000ND
2015-08-113334-007-1305ND
2016-03-302113-014-1440ND
2016-08-032113-014-1045ND
2016-08-172113-007-0945ND
2016-08-172113-002-1215ND
2017-08-227473-014-1040ND
2018-08-147473-002-1120ND
2018-08-147473-007-1310ND
2018-08-227473-014-0930ND
2019-08-277473-002-1135ND
2019-09-097473-007-1330ND
2019-09-127473-014-1150ND