Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Cobalt

Griffin

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

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND160ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2013-03-212798094ND
2013-03-212798085ND
2013-03-212798089ND
2013-03-212798068ND
2013-06-272850012ND
2013-06-272850021ND
2013-06-272850005ND
2013-06-272850048ND
2013-09-252903437ND
2013-09-252903566ND
2013-09-252903373ND
2013-09-252903786ND
2013-12-172947888ND
2013-12-172947523ND
2013-12-172947540ND
2013-12-172947897ND