Know Your Environment. Protect Your Health.

Cobalt

King County Water District 111

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
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2013-08-202881753ND
2013-08-202881740ND
2013-08-202881295ND
2013-08-202881468ND
2013-08-202881761ND
2013-08-202881731ND
2013-08-202881287ND
2013-08-202881459ND
2014-02-252981161ND
2014-02-252981073ND
2014-02-252981047ND
2014-02-252981173ND
2014-02-252981089ND
2014-02-252981136ND
2014-02-252981056ND
2014-04-293016623ND