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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

El Dorado ID - Main

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

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND150ND
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
2013-01-23201301240170AMND
2013-01-23201301240178AMND
2013-01-29201301300031AMND
2013-04-17201304180506AMND
2013-04-17201304180504AMND
2013-04-17201304180523AMND
2013-04-17201304180573AMND
2013-07-10201307110741AMND
2013-07-10201307110737AMND
2013-07-10201307110750AMND
2013-07-31201308010355AMND
2013-09-24201309250084AMND
2013-10-16201310170160AMND
2013-10-16201310170158AMND
2013-10-16201310170156AMND