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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Chesterfield Rural Water

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).

 

10

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.0592 ppb54ND - 0.1000 ppb
20140.120 ppb550.0580 ppb - 0.190 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

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
2013-08-19201308210383AM0.0540 ppb
2013-08-19201308210609AM0.1000 ppb
2013-08-19201308210444AMND
2013-11-20201311220548AM0.0580 ppb
2013-11-20201311220624AM0.0840 ppb
2014-02-19201402210357AM0.170 ppb
2014-02-19201402210242AM0.190 ppb
2014-02-19201402210299AM0.0580 ppb
2014-05-21201405230217AM0.0720 ppb
2014-05-21201405230319AM0.110 ppb