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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

Pima 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
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015ND120ND
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
2015-03-303215955ND
2015-03-303215964ND
2015-04-223230516ND
2015-04-223230514ND
2015-04-223230520ND
2015-05-143243896ND
2015-09-283331136ND
2015-09-283331141ND
2015-09-283331115ND
2015-09-283331111ND
2015-09-283331124ND
2015-10-223346259ND