Know Your Environment. Protect Your Health.

Cobalt

City of Sherwood

NOTE: City of Sherwood purchases water from City of Wilsonville which is required to test for cobalt. Sample information shown below was taken by City of Wilsonville.

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND90ND
2015ND30ND
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 Sherwood purchases water from City of Wilsonville which is required to test for cobalt. Sample information shown below was taken by City of Wilsonville.

Date Lab ID Result
2014-03-18201403190638AMND
2014-03-18201403190630AMND
2014-06-11201406120550AMND
2014-06-11201406120316AMND
2014-09-16201409170741AMND
2014-09-17201409180589AMND
2014-12-02201412030685AMND
2014-12-11201412120456AMND