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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Newhall CWD-Newhall

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
20130.572 ppb1210ND - 1.10 ppb
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-04-129590-006-0830ND
2012-04-129590-007-1150ND
2013-02-21201302210758AM0.820 ppb
2013-02-21201302210760AM0.540 ppb
2013-02-21201302210756AM1.10 ppb
2013-04-119590-006-0835ND
2013-04-119590-007-0855ND
2013-05-16201305160550AM0.280 ppb
2013-05-16201305160497AM0.800 ppb
2013-08-22201308220425AM0.340 ppb
2013-08-22201308220427AM1.10 ppb
2013-08-22201308220423AM0.840 ppb
2013-11-21201311220104AM0.400 ppb
2013-11-21201311220118AM0.640 ppb
2014-04-109590-007-0936ND
2014-05-299590-006-0955ND
2015-04-299590-006-1120ND
2015-04-299590-007-1145ND
2016-04-149590-007-1045ND
2016-04-149590-006-1105ND
2017-04-139590-007-0911ND
2017-04-139590-006-0940ND