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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

Cedar Rapids Water Department

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

 

19

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
2013ND160ND
2014ND30ND
2015N/A00N/A
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

Date Lab ID Result
2013-02-133B14016-01AMND
2013-02-133B14016-04AMND
2013-02-133B14016-03AMND
2013-02-133B14016-02AMND
2013-05-223E23046-04AND
2013-05-223E23046-02AND
2013-05-223E23046-03AND
2013-05-223E23046-01AND
2013-08-213H22042-03AND
2013-08-213H22042-07AND
2013-08-213H22042-01AND
2013-08-213H22042-05AND
2013-11-203K21099-05AND
2013-11-203K21099-03AND
2013-11-203K21099-07AND
2013-11-203K21099-01AND
2014-02-274B28122-01AND
2014-02-274B28122-03AND
2014-02-274B28122-05AND