Know Your Environment. Protect Your Health.

Cobalt

City of Tacoma

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

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND240ND
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

Date Lab ID Result
2014-08-06201408070493AMND
2015-03-10201503120179AMND
2015-03-10201503110935AMND
2015-03-10201502170548AMND
2015-03-17201503190039AMND
2015-06-09201505060001AMND
2015-06-09201505060002AMND
2015-06-17201505060005AMND
2015-06-29201505020034AMND
2015-07-06201505020035AMND
2015-07-08201507090318AMND
2015-07-09201506300092AMND
2015-07-09201507100395AMND
2015-08-19201508200778AMND
2015-09-09201508050009AMND
2015-09-09201508050010AMND
2015-09-09201508050013AMND
2015-10-13201509250020AMND
2015-12-01201511130083AMND
2015-12-01201511130086AMND
2015-12-02201511130082AMND
2015-12-07201511130096AMND
2015-12-07201511130099AMND
2015-12-08201511130098AMND
2015-12-08201511130097AMND