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EWG's Tap Water Database

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Cobalt

North Las Vegas Utilities

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
2010N/A00N/A
2011N/A00N/A
2012N/A00N/A
2013N/A00N/A
2014ND100ND
2015ND20ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 70 ppb

The 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
2014-04-15201404170354AMND
2014-04-15201404170350AMND
2014-04-15201404170356AMND
2014-04-15201404170352AMND
2014-07-22201407250245AMND
2014-07-22201407250243AMND
2014-10-28201410300261AMND
2014-10-28201410300255AMND
2014-10-28201410300257AMND
2014-10-28201410300259AMND
2015-01-27201501290234AMND
2015-01-27201501290237AMND