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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Dtma Main System

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

MORE ABOUT THIS CONTAMINANT

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND440ND
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
2014-02-18104900PND
2014-02-18304803PND
2014-02-18104902PND
2014-02-18304804PND
2014-02-18104905PND
2014-02-18104906PND
2014-02-18104907PND
2014-02-18104908PND
2014-02-18304805PND
2014-02-18304807PND
2014-02-18304808PND
2014-02-19104912PND
2014-02-19104899PND
2014-02-19304806PND
2014-02-19104911PND
2014-02-19104910PND
2014-02-19104909PND
2014-02-19104904PND
2014-02-19104903PND
2014-02-19104901PND
2014-05-21106963PND
2014-05-21307040PND
2014-08-18308925PND
2014-08-18308922PND
2014-08-18108932PND
2014-08-18108938PND
2014-08-18108937PND
2014-08-18108935PND
2014-08-18108930PND
2014-08-19108928PND
2014-08-19108920PND
2014-08-19308924PND
2014-08-19108926PND
2014-08-19108927PND
2014-08-19108936PND
2014-08-19108929PND
2014-08-19108934PND
2014-08-20108931PND
2014-08-20108933PND
2014-08-20308923PND
2014-08-20308939PND
2014-08-26308921PND
2014-11-18309769PND
2014-11-24109694PND