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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of Laramie

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND260ND
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
2013-02-19201302200419AMND
2013-02-19201302200436AMND
2013-02-19201302200449AMND
2013-02-19201302200476AMND
2013-02-19201302200336AMND
2013-02-19201302200513AMND
2013-02-19201302200586AMND
2013-03-04201303050057AMND
2013-05-20201305210047AMND
2013-05-20201305210041AMND
2013-05-20201305210045AMND
2013-05-20201305210020AMND
2013-05-20201305210028AMND
2013-08-20201308210397AMND
2013-08-20201308210430AMND
2013-08-20201308210641AMND
2013-08-20201308210617AMND
2013-08-20201308210425AMND
2013-08-20201308210596AMND
2013-08-20201308210404AMND
2013-08-20201308210588AMND
2013-11-19201311200375AMND
2013-11-19201311200419AMND
2013-11-19201311200422AMND
2013-11-19201311200351AMND
2013-11-19201311200543AMND