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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

St. Louis City

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

 

14

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
2013ND130ND
2014ND10ND
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
2013-04-03AB94672ND
2013-04-03AB94678ND
2013-04-03AB94676ND
2013-04-23AB96367ND
2013-04-23AB96365ND
2013-04-23AB96371ND
2013-04-23AB96369ND
2013-07-16AC05140ND
2013-07-16AC05136ND
2013-07-16AC05134ND
2013-07-16AC05138ND
2013-10-14AC13659ND
2013-10-14AC13661ND
2014-02-03AC18020ND