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EWG's Tap Water Database

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Cobalt

Columbus

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012N/A00N/A
2013N/A00N/A
2014ND80ND
2015N/A00N/A

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 70 ppb

The 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
2014-02-04201402050226AMND
2014-02-04201402050222AMND
2014-05-06201405080358AMND
2014-05-06201405080339AMND
2014-08-18201408190129AMND
2014-08-18201408190494AMND
2014-11-11201411120138AMND
2014-11-11201411120140AMND