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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Chaska

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

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND30ND
2014ND30ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/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
2013-07-301040234001ND
2013-07-301040234003ND
2013-07-301040234006ND
2014-01-281069387003ND
2014-01-281069387006ND
2014-01-281069387001ND