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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

West Hwy 80 Ark Road WS

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
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
2014-01-172960237ND
2014-01-172960205ND
2014-01-172960201ND
2014-01-172960197ND
2014-01-172960255ND
2014-01-172960246ND
2014-07-293071718ND
2014-07-293071659ND
2014-07-293071950ND
2014-07-293071636ND
2014-07-293071946ND
2014-07-293071705ND