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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Monterey Park Water Department

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND50ND
2014ND10ND
20152.32 ppb53ND - 4.50 ppb
2016ND40ND
2017ND10ND

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
2012-08-149588-038-0935ND
2012-10-313761-006-1345ND
2012-11-059588-006-0940ND
2012-11-083761-038-0810ND
2013-02-059588-013-1020ND
2013-02-059588-010-1035ND
2013-03-283761-013-0915ND
2013-08-209588-001-0920ND
2013-11-199588-011-1120ND
2014-08-219588-002-0945ND
2015-02-265B26032-01A4.50 ppb
2015-02-265B26032-05A3.70 ppb
2015-02-265B26032-03A3.40 ppb
2015-08-259588-038-1035ND
2015-11-109588-006-1100ND
2016-02-189588-013-1045ND
2016-02-189588-010-1030ND
2016-08-119588-011-0930ND
2016-08-119588-001-0905ND
2017-08-159588-002-0915ND