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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Warren Water District

NOTE: Warren Water District purchases water from Des Moines Water Works which is required to test for chromium (hexavalent). Sample information shown below was taken by Des Moines Water Works.

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).

 

24

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.257 ppb440.119 ppb - 0.411 ppb
20140.157 ppb440.133 ppb - 0.178 ppb
20150.730 ppb128ND - 2.62 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

NOTE: Warren Water District purchases water from Des Moines Water Works which is required to test for chromium (hexavalent). Sample information shown below was taken by Des Moines Water Works.

Date Lab ID Result
2014-07-301809521.75 ppb
2014-07-301809590.161 ppb
2014-07-301849631.81 ppb
2014-07-301809600.129 ppb
2014-07-30180957ND
2014-07-30180955ND
2014-10-08196217ND
2014-10-081962231.95 ppb
2014-10-081962200.207 ppb
2014-10-081962190.236 ppb
2014-10-08196216ND
2014-10-081962222.09 ppb
2015-01-262114770.198 ppb
2015-01-262114832.62 ppb
2015-01-26211479ND
2015-01-262114972.58 ppb
2015-01-26211478ND
2015-01-272116850.168 ppb
2015-04-01226434ND
2015-04-012264330.188 ppb
2015-04-012265310.211 ppb
2015-04-01226435ND
2015-04-012265302.60 ppb
2015-04-012264310.192 ppb