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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

Carson City Public Works

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

 

19

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
2013N/A00N/A
2014ND100ND
2015ND90ND
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
2014-08-11201408130733AMND
2014-08-11201408130877AMND
2014-08-11201408130731AMND
2014-08-12201408130822AMND
2014-08-12201408130669AMND
2014-08-12201408130686AMND
2014-08-12201408130648AMND
2014-08-12201408130810AMND
2014-11-24201411250342AMND
2014-11-24201411250372AMND
2015-02-23201502240536AMND
2015-02-23201502240530AMND
2015-02-23201502240586AMND
2015-02-23201502240532AMND
2015-02-24201502250915AMND
2015-02-24201502250721AMND
2015-02-24201502250934AMND
2015-05-12201505130627AMND
2015-05-12201505130289AMND