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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of Tucson

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

MORE ABOUT THIS CONTAMINANT

 

60

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND600ND
2014N/A00N/A
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
2013-04-10201304110659AMND
2013-04-10201304110657AMND
2013-04-15201304160056AMND
2013-04-15201304160054AMND
2013-04-15201304160050AMND
2013-04-15201304160052AMND
2013-04-17201304190462AMND
2013-04-17201304190460AMND
2013-04-17201304190458AMND
2013-04-22201304240203AMND
2013-04-22201304240199AMND
2013-04-22201304240197AMND
2013-04-22201304240201AMND
2013-04-23201304250529AMND
2013-04-23201304250527AMND
2013-04-23201304250525AMND
2013-04-23201304250523AMND
2013-04-24201304260166AMND
2013-04-24201304260162AMND
2013-04-24201304260164AMND
2013-04-29201305010206AMND
2013-04-29201305010177AMND
2013-04-29201305010447AMND
2013-04-29201305010451AMND
2013-04-29201305020190AMND
2013-04-29201305010449AMND
2013-06-19201306210144AMND
2013-06-19201306210152AMND
2013-06-19201306210146AMND
2013-06-19201306210148AMND
2013-10-08201310110331AMND
2013-10-08201310120150AMND
2013-10-08201310110337AMND
2013-10-08201310110335AMND
2013-10-08201310120152AMND
2013-10-08201310110333AMND
2013-10-09201310120156AMND
2013-10-09201310120160AMND
2013-10-09201310120154AMND
2013-10-09201310120162AMND
2013-10-09201310120158AMND
2013-10-14201310150058AMND
2013-10-14201310150056AMND
2013-10-14201310150052AMND
2013-10-14201310150054AMND
2013-10-16201310170126AMND
2013-10-16201310170122AMND
2013-10-16201310170124AMND
2013-10-16201310170118AMND
2013-10-16201310170120AMND
2013-10-17201310180353AMND
2013-10-17201310180359AMND
2013-10-17201310180357AMND
2013-10-17201310180355AMND
2013-10-29201310300080AMND
2013-10-29201310300074AMND
2013-10-29201310300078AMND
2013-10-29201310300076AMND
2013-10-29201310300082AMND
2013-11-20201311220543AMND