Know Your Environment. Protect Your Health.

Cobalt

Arlington Water Department

NOTE: Arlington Water Department purchases water from SNO PUD 1 - Lake Stevens which is required to test for cobalt. Sample information shown below was taken by SNO PUD 1 - Lake Stevens.

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND110ND
2014ND30ND
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: Arlington Water Department purchases water from SNO PUD 1 - Lake Stevens which is required to test for cobalt. Sample information shown below was taken by SNO PUD 1 - Lake Stevens.

Date Lab ID Result
2014-01-22WA97-SE1-14-01298-3401ND
2014-01-22WA97-SE1-14-01298-3400ND
2014-04-15WA97-SE2-14-06585-15943ND
2014-04-15WA97-SE2-14-06585-15944ND
2014-04-16WA97-SE1-14-06586-15946ND
2014-04-1697-SE1-14-06586-15945ND
2014-07-22WA97-SE3-14-13616-31731ND
2014-07-22WA97-SE3-14-13616-31732ND
2014-10-27WA97-SE4-14-21143-47786ND
2014-10-27WA97-SE1-14-21143-47787ND
2014-10-28WA98-SE2-14-21311-48225ND
2014-10-28WA98-SE2-14-21311-48224ND