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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Atlanta

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

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND80ND
2014ND80ND
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
2013-09-17201309200132AMND
2013-09-17201309190579AMND
2013-09-17201309200130AMND
2013-09-17201309190581AMND
2013-12-11201312130563AMND
2013-12-11201312130561AMND
2013-12-11201312130537AMND
2013-12-11201312130535AMND
2014-03-12201403140277AMND
2014-03-12201403140287AMND
2014-03-12201403140283AMND
2014-03-12201403140281AMND
2014-06-09201406110904AMND
2014-06-09201406110944AMND
2014-06-09201406110936AMND
2014-06-09201406130315AMND