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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Whittier 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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
20130.1000 ppb41ND - 0.400 ppb
20140.418 ppb42ND - 0.970 ppb
2015ND10ND
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
2012-03-139588-009-1130ND
2012-03-139588-013-1000ND
2013-05-169588-003-0800ND
2013-09-179588-010-1010ND
2013-11-253K25016-01AND
2013-11-263K26036-01A0.400 ppb
2014-03-119588-008-0925ND
2014-03-119588-011-0910ND
2014-05-214E21033-01A0.700 ppb
2014-05-214E21030-01A0.970 ppb
2015-03-179588-013-1000ND
2016-06-029588-009-1100ND
2016-09-139588-010-0910ND
2017-03-089588-008-0905ND
2017-03-089588-011-0855ND