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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Brown Deer Waterworks

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).

 

8

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.213 ppb880.190 ppb - 0.250 ppb
20140.158 ppb660.138 ppb - 0.178 ppb
20150.168 ppb220.163 ppb - 0.173 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 Lab ID Result
2014-05-20790733-113970.168 ppb
2014-05-20790735-113970.159 ppb
2014-08-14810973-120800.159 ppb
2014-08-14810971-120800.178 ppb
2014-11-10830779-128080.138 ppb
2014-11-10830777-128080.145 ppb
2015-02-10842803-133740.173 ppb
2015-02-10842805-133810.163 ppb