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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Sierra Madre Water Department

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

 

16

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.649 ppb117ND - 2.00 ppb
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-06-133F14032-02A0.350 ppb
2013-06-133F14032-03A1.50 ppb
2013-06-133F14032-01A1.40 ppb
2013-08-269588-003-1040ND
2013-08-269588-004-1050ND
2013-08-269588-005-11002.00 ppb
2013-08-269588-006-10451.30 ppb
2013-08-269588-007-1115ND
2013-12-233L23104-05A0.160 ppb
2013-12-233L23104-03AND
2013-12-233L23104-01A0.430 ppb
2017-05-039588-003-1030ND
2017-05-039588-004-1045ND
2017-05-039588-005-0930ND
2017-05-039588-006-0940ND
2017-05-039588-007-1010ND