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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Placer County Water Agency - Foothill

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

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND140ND
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
2014-03-04201403050497AMND
2014-03-04201403050501AMND
2014-03-04201403050499AMND
2014-06-10201406110961AMND
2014-06-10201406110963AMND
2014-06-10201406110965AMND
2014-06-10201406110959AMND
2014-09-02201409030613AMND
2014-09-02201409030615AMND
2014-09-02201409030611AMND
2014-09-15201409160463AMND
2014-12-10201412110732AMND
2014-12-10201412110734AMND
2014-12-10201412110730AMND