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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Jonah Water SUD

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

MORE ABOUT THIS CONTAMINANT

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND300ND
2014ND20ND
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
2013-05-28Q1301551003ND
2013-05-28Q1301551027ND
2013-05-28Q1301551025ND
2013-05-28Q1301551021ND
2013-05-28Q1301551015ND
2013-05-28Q1301551017ND
2013-05-28Q1301551019ND
2013-05-28Q1301551009ND
2013-05-28Q1301551001ND
2013-05-28Q1301551023ND
2013-05-28Q1301551007ND
2013-05-28Q1301551011ND
2013-05-28Q1301551005ND
2013-05-28Q1301551013ND
2013-08-15Q1305575001ND
2013-08-15Q1305575003ND
2013-11-05Q1311470005ND
2013-11-05Q1311470003ND
2013-11-05Q1311470001ND
2013-11-05Q1311470007ND
2013-11-05Q1311470015ND
2013-11-05Q1311470027ND
2013-11-05Q1311470017ND
2013-11-05Q1311470019ND
2013-11-05Q1311470025ND
2013-11-05Q1311470021ND
2013-11-05Q1311470023ND
2013-11-05Q1311470009ND
2013-11-05Q1311470013ND
2013-11-05Q1311470011ND
2014-02-24Q1405747003ND
2014-02-24Q1405747001ND