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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Leeds Water Board

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

MORE ABOUT THIS CONTAMINANT

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND280ND
2014N/A00N/A
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
2013-04-083589226017AMND
2013-04-083589226015AMND
2013-04-083589226003AMND
2013-04-083589226023AMND
2013-04-083589226027AMND
2013-04-083589226019AMND
2013-04-083589226007AMND
2013-04-083589226011AMND
2013-04-083589226009AMND
2013-04-083589226005AMND
2013-04-083589226025AMND
2013-04-083589226021AMND
2013-04-083589226013AMND
2013-04-083589226001AMND
2013-10-0835111443005AMND
2013-10-0835111443009AMND
2013-10-0835111443017AMND
2013-10-0835111443013AMND
2013-10-0835111443001AMND
2013-10-0835111443021AMND
2013-10-0835111443007AMND
2013-10-0835111443015AMND
2013-10-0835111443019AMND
2013-10-0835111443025AMND
2013-10-0835111443027AMND
2013-10-0835111443003AMND
2013-10-0835111443023AMND
2013-10-0835111443011AMND