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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of Ammon

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

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND100ND
2014ND100ND
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
2013-10-232918330ND
2013-10-232918317ND
2013-10-232918139ND
2013-10-232918347ND
2013-10-232918323ND
2013-10-232918130ND
2013-10-232918225ND
2013-10-232918339ND
2013-10-232918169ND
2013-10-232918309ND
2014-04-143010001ND
2014-04-143010067ND
2014-04-143009984ND
2014-04-143009959ND
2014-04-143010029ND
2014-04-143010014ND
2014-04-143010034ND
2014-04-143010071ND
2014-04-143010100ND
2014-04-143009992ND