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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

City of Arvada

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).

 

12

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.0794 ppb108ND - 0.120 ppb
20150.0810 ppb220.0800 ppb - 0.0820 ppb
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 Result
2014-04-21ND
2014-04-210.0940 ppb
2014-04-280.0960 ppb
2014-05-050.0790 ppb
2014-07-140.120 ppb
2014-07-140.120 ppb
2014-07-140.120 ppb
2014-07-14ND
2014-10-150.0840 ppb
2014-10-150.0810 ppb
2015-01-050.0820 ppb
2015-01-050.0800 ppb