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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

Olivenhain Municipal Water District

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
2012N/A00N/A
2013ND80ND
2014ND80ND
2015N/A00N/A
2016N/A00N/A
2017N/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
2013-08-21201308220237AMND
2013-08-21201308220217AMND
2013-08-21201308220206AMND
2013-08-27201308280258AMND
2013-11-21201311220602AMND
2013-11-21201311220604AMND
2013-11-21201311220598AMND
2013-11-21201311220614AMND
2014-02-12201402130485AMND
2014-02-12201402130491AMND
2014-02-12201402130487AMND
2014-02-12201402130504AMND
2014-05-28201405290360AMND
2014-05-28201405290358AMND
2014-05-28201405290356AMND
2014-05-28201405290364AMND