Know Your Environment. Protect Your Health.

Cobalt

City of West Linn

NOTE: City of West Linn purchases water from South Fork Water Board which is required to test for cobalt. Sample information shown below was taken by South Fork Water Board.

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

 

0

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND20ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: City of West Linn purchases water from South Fork Water Board which is required to test for cobalt. Sample information shown below was taken by South Fork Water Board.

Date Lab ID Result