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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Shorewood

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
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
2014-03-1125048801ND
2014-03-1125048301ND
2014-03-1125048401ND
2014-03-1125048501ND
2014-03-1125048701ND
2014-04-0825432701ND
2014-09-103113330ND
2014-09-103111899ND
2014-09-103113332ND
2014-09-103113334ND
2014-09-103111895ND
2014-09-103111897ND