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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Cash SUD

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
2014ND80ND
2015ND80ND
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
2014-09-24Q1447349003ND
2014-09-24Q1447349005ND
2014-09-24Q1447349007ND
2014-09-24Q1447349001ND
2014-12-22Q1460724003ND
2014-12-22Q1460724007ND
2014-12-22Q1460724005ND
2014-12-22Q1460724001ND
2015-03-30Q1511510003ND
2015-03-30Q1511510007ND
2015-03-30Q1511510005ND
2015-03-30Q1511510001ND
2015-06-22Q1523094001ND
2015-06-22Q1523094003ND
2015-06-22Q1523094005ND
2015-06-22Q1523094007ND