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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Mineola

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
20130.500 ppb62ND - 1.80 ppb
2014ND60ND
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
2013-10-18201310220246AMND
2013-10-18201310220248AMND
2013-10-21201310220244AM1.20 ppb
2013-10-22201310240531AMND
2013-10-22201310240529AM1.80 ppb
2013-10-25201310290201AMND
2014-04-2235135242003AMND
2014-04-2235135242001AMND
2014-04-2435136022005AMND
2014-04-2435136022003AMND
2014-08-2535152913005AMND
2014-08-2535152913001AMND