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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of Clovis

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

MORE ABOUT THIS CONTAMINANT

 

77

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND390ND
2015ND380ND
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
2014-09-02201409030549AMND
2014-09-02201409030557AMND
2014-09-02201409030584AMND
2014-09-02201409030623AMND
2014-09-02201409030619AMND
2014-09-03201409040519AMND
2014-09-03201409040597AMND
2014-09-03201409040593AMND
2014-09-03201409040578AMND
2014-09-03201409040496AMND
2014-09-03201409040644AMND
2014-09-03201409040653AMND
2014-09-03201409040515AMND
2014-09-03201409040561AMND
2014-09-03201409040510AMND
2014-09-03201409040555AMND
2014-09-03201409050189AMND
2014-09-03201409040459AMND
2014-09-03201409040571AMND
2014-09-03201409040640AMND
2014-09-03201409040545AMND
2014-09-03201409040476AMND
2014-09-04201409050362AMND
2014-09-04201409050383AMND
2014-09-04201409050333AMND
2014-09-04201409050378AMND
2014-09-04201409050316AMND
2014-09-04201409050367AMND
2014-09-04201409050369AMND
2014-09-04201409050385AMND
2014-09-04201409050330AMND
2014-09-04201409050304AMND
2014-09-04201409050372AMND
2014-09-04201409050388AMND
2014-09-04201409050321AMND
2014-09-04201409050374AMND
2014-09-04201409050380AMND
2014-12-11201412110701AMND
2014-12-16201412180316AMND
2015-03-04201502190797AMND
2015-03-04201502190766AMND
2015-03-04201502190796AMND
2015-03-04201502190787AMND
2015-03-04201502190795AMND
2015-03-04201502190775AMND
2015-03-04201502190782AMND
2015-03-04201502190769AMND
2015-03-04201502190770AMND
2015-03-04201502190781AMND
2015-03-04201502190771AMND
2015-03-04201502190784AMND
2015-03-04201502190768AMND
2015-03-04201502190774AMND
2015-03-04201502190772AMND
2015-03-04201502190794AMND
2015-03-04201502190777AMND
2015-03-04201502190780AMND
2015-03-04201502190779AMND
2015-03-04201502190792AMND
2015-03-04201502190793AMND
2015-03-05201502190783AMND
2015-03-05201502190765AMND
2015-03-05201502190778AMND
2015-03-05201502190801AMND
2015-03-05201502190789AMND
2015-03-05201502190791AMND
2015-03-05201502190790AMND
2015-03-05201502190788AMND
2015-03-05201502190786AMND
2015-03-05201502190785AMND
2015-03-05201502190767AMND
2015-03-05201502190798AMND
2015-03-05201502190800AMND
2015-03-05201502190799AMND
2015-03-25201502190773AMND
2015-06-11201506120118AMND
2015-06-11201506120175AMND