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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Warren Water District

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

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
20130.400 ppb440.200 ppb - 0.600 ppb
20140.200 ppb43ND - 0.300 ppb
20150.758 ppb128ND - 2.60 ppb
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

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 (total). Sample information shown below was taken by Des Moines Water Works.

Date Lab ID Result
2012-04-021901305ND
2012-04-021901306ND
2014-07-301809531.60 ppb
2014-07-301809521.90 ppb
2014-07-30180957ND
2014-07-30180960ND
2014-07-30180955ND
2014-07-301809590.300 ppb
2014-10-08196217ND
2014-10-081962232.10 ppb
2014-10-081962190.300 ppb
2014-10-081962222.00 ppb
2014-10-081962200.200 ppb
2014-10-081962160.200 ppb
2015-01-26211478ND
2015-01-262114972.50 ppb
2015-01-262114770.200 ppb
2015-01-26211479ND
2015-01-262114832.30 ppb
2015-01-27211685ND
2015-04-012264310.400 ppb
2015-04-012264330.400 ppb
2015-04-012265302.60 ppb
2015-04-012265310.500 ppb
2015-04-012264340.200 ppb
2015-04-01226435ND