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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Golden State Water Company (GSWC) - Artesia

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

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND160ND
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
2013-03-12201303120349AMND
2013-03-12201303120355AMND
2013-03-12201303120361AMND
2013-03-12201303120363AMND
2013-03-12201303120359AMND
2013-03-12201303120357AMND
2013-03-12201303120351AMND
2013-03-12201303120353AMND
2013-09-11201309110726AMND
2013-09-11201309110734AMND
2013-09-11201309110738AMND
2013-09-11201309110740AMND
2013-09-11201309110736AMND
2013-09-11201309110728AMND
2013-09-11201309110732AMND
2013-09-11201309110730AMND