Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Cobalt

City of Phoenix

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

 

24

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
2013ND240ND
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
2013-02-192013010042ND
2013-02-192013010050ND
2013-02-192013010058ND
2013-02-192013010054ND
2013-02-192013010035ND
2013-02-262013010401ND
2013-05-142013029532ND
2013-05-142013029496ND
2013-05-142013029492ND
2013-05-152013029549ND
2013-05-152013029545ND
2013-05-152013029541ND
2013-08-132013050811ND
2013-08-132013050844ND
2013-08-132013050840ND
2013-08-132013050794ND
2013-08-142013051061ND
2013-08-142013051057ND
2013-11-062013070943ND
2013-11-062013070955ND
2013-11-062013070947ND
2013-11-062013070951ND
2013-11-062013070994ND
2013-11-062013070990ND