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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Meriden Water Division

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
2013ND80ND
2014ND360ND
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
2013-01-082762402ND
2013-01-082762392ND
2013-04-092806655ND
2013-04-092807814ND
2013-07-092854607ND
2013-07-092854692ND
2013-10-082910001ND
2013-10-082909983ND
2014-02-112971674ND
2014-02-112971711ND
2014-02-112971678ND
2014-02-112971756ND
2014-02-112971749ND
2014-03-112990053ND
2014-03-112990271ND
2014-03-112990187ND
2014-03-112990080ND
2014-03-112990234ND
2014-03-122990251ND
2014-04-243014835ND
2014-04-243014833ND
2014-05-143026121ND
2014-05-143026055ND
2014-05-143026113ND
2014-05-143026086ND
2014-05-143026044ND
2014-08-123081388ND
2014-08-143083483ND
2014-08-143083503ND
2014-08-143083471ND
2014-08-143083478ND
2014-09-093100349ND
2014-09-093100418ND
2014-09-093100403ND
2014-09-093100374ND
2014-09-093100407ND
2014-09-093100338ND
2014-09-093100391ND
2014-09-093100353ND
2014-11-123137945ND
2014-11-123137930ND
2014-11-123137941ND
2014-12-163157197ND
2014-12-163157202ND