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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Dublin

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

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND140ND
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
2014-01-2735124035001AMND
2014-01-2735124035007AMND
2014-01-2735124035003AMND
2014-01-2735124035005AMND
2014-04-2335135298003AMND
2014-04-2335135298001AMND
2014-04-2335135299001AMND
2014-07-2135147009001AMND
2014-07-2135147009003AMND
2014-07-2135147007003AMND
2014-07-2135147007001AMND
2014-10-2935161596005AMND
2014-10-2935161596003AMND
2014-10-2935161596001AMND