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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of Lakewood

NOTE: City of Lakewood purchases water from Cleveland Public Water System which is required to test for cobalt. Sample information shown below was taken by Cleveland Public Water System.

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

MORE ABOUT THIS CONTAMINANT

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND20ND
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

NOTE: City of Lakewood purchases water from Cleveland Public Water System which is required to test for cobalt. Sample information shown below was taken by Cleveland Public Water System.

Date Lab ID Result
2014-02-12201402130383AMND
2014-02-12201402130397AMND
2014-02-12201402130350AMND
2014-02-12201402130395AMND
2014-02-12201402130431AMND
2014-05-14201405160315AMND
2014-05-19201405210828AMND
2014-05-19201405210567AMND
2014-05-19201405210544AMND
2014-05-19201405210815AMND
2014-08-04201408050392AMND
2014-08-04201408050438AMND
2014-08-04201408050326AMND
2014-08-25201408280229AMND
2014-08-25201408270755AMND
2014-11-04201411060480AMND
2014-11-05201411060486AMND
2014-11-05201411060279AMND
2014-11-05201411060402AMND
2014-11-05201411060400AMND