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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

Connecticut Water Company - Shoreline Region-chester System

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

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND100ND
2015N/A00N/A
2016N/A00N/A
2017N/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
2014-01-21103698PND
2014-01-21103699PND
2014-01-21303824PND
2014-04-22306639PND
2014-05-06106556PND
2014-07-21107769PND
2014-07-21107770PND
2014-07-22307893PND
2014-10-20109406PND
2014-10-21309329PND