Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Cobalt

Warren Water District

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

Cobalt is a metal found throughout the environment; people may be exposed to cobalt in air, food and drinking water.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND40ND
2014ND40ND
2015ND120ND
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 70 ppb

The EWG Health Guideline of 70 ppb for cobalt was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against change in blood chemistry.

ppb = parts per billion

All test results

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

Date Lab ID Result
2014-07-30180959ND
2014-07-30180957ND
2014-07-30180960ND
2014-07-30180952ND
2014-07-30180955ND
2014-07-30180953ND
2014-10-08196216ND
2014-10-08196223ND
2014-10-08196217ND
2014-10-08196222ND
2014-10-08196219ND
2014-10-08196220ND
2015-01-26211477ND
2015-01-26211479ND
2015-01-26211483ND
2015-01-26211478ND
2015-01-26211497ND
2015-01-27211685ND
2015-04-01226434ND
2015-04-01226433ND
2015-04-01226531ND
2015-04-01226435ND
2015-04-01226530ND
2015-04-01226431ND