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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

Grain Valley

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
2012N/A00N/A
2013ND60ND
2014N/A00N/A
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
2013-05-28AB97324ND
2013-05-28AB97326ND
2013-05-28AB97322ND
2013-11-25AC14919ND
2013-11-25AC14917ND
2013-11-25AC14915ND