Know Your Environment. Protect Your Health.

Cobalt

City of Mountlake Terrace

NOTE: City of Mountlake Terrace purchases water from Alderwood Water District which is required to test for cobalt. Sample information shown below was taken by Alderwood Water District.

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
2013ND40ND
2014ND40ND
2015N/A00N/A
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 Mountlake Terrace purchases water from Alderwood Water District which is required to test for cobalt. Sample information shown below was taken by Alderwood Water District.

Date Lab ID Result
2013-02-11WA97-SE1-13-02416-5573ND
2013-02-11WA97-SE1-13-02418-5575ND
2013-05-08WA97-SE2-13-07881-18269ND
2013-05-08WA97-SE2-13-07884-18273ND
2013-08-15WA97-SE3-13-15249-34739ND
2013-08-15WA97-SE3-13-15249-34738ND
2013-11-06WA97-SE4-13-21199-48215ND
2013-11-06WA97-SE4-13-21199-48214ND