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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Sardis Lone Elm WSC

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

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND170ND
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
2014-02-122973028ND
2014-02-122973350ND
2014-02-122973089ND
2014-02-122972958ND
2014-02-122973566ND
2014-02-122973376ND
2014-02-122972997ND
2014-02-122973043ND
2014-02-122973428ND
2014-02-122972940ND
2014-02-122972988ND
2014-02-122973063ND
2014-11-193142561ND
2014-11-193142445ND
2014-11-193142400ND
2014-11-203143720ND
2014-11-203143690ND