Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Cobalt

Sunrise Water Authority

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

MORE ABOUT THIS CONTAMINANT

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.173 ppb111ND - 1.90 ppb
20140.0947 ppb191ND - 1.80 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/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
2013-10-281056382016ND
2013-10-281056382010ND
2013-10-281056382004ND
2013-10-281056382007ND
2013-10-2810563820011.90 ppb
2013-10-281056382013ND
2013-10-291056382019ND
2013-10-291056382022ND
2013-10-291056382027ND
2013-10-291056382024ND
2013-10-291056382029ND
2014-01-211068625004ND
2014-01-211068625001ND
2014-01-211068625007ND
2014-01-211068625009ND
2014-04-282004370027ND
2014-04-282004370015ND
2014-04-282004370023ND
2014-04-282004370021ND
2014-04-282004370025ND
2014-04-282004370018ND
2014-04-292004370012ND
2014-04-2920043700011.80 ppb
2014-04-292004370004ND
2014-04-292004370010ND
2014-04-292004370007ND
2014-07-282020859008ND
2014-07-282020859003ND
2014-07-282020859001ND
2014-07-282020859005ND