Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Cobalt

Gahanna City PWS

NOTE: Gahanna City PWS purchases water from Columbus Public Water System which is required to test for cobalt. Sample information shown below was taken by Columbus Public Water System.

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

MORE ABOUT THIS CONTAMINANT

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
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

NOTE: Gahanna City PWS purchases water from Columbus Public Water System which is required to test for cobalt. Sample information shown below was taken by Columbus Public Water System.

Date Lab ID Result
2014-03-17201403190943AMND
2014-03-17201403190699AMND
2014-03-17201403190663AMND
2014-03-17201403190655AMND
2014-03-17201403190594AMND
2014-03-21201403250154AMND
2014-06-09201406120369AMND
2014-06-27201407010194AMND
2014-06-27201407010198AMND
2014-06-27201407010196AMND
2014-09-16201409180592AMND
2014-09-16201409190234AMND
2014-09-16201409180743AMND
2014-09-16201409180655AMND
2014-09-16201409180586AMND
2014-09-16201409180581AMND
2014-12-16201412180413AMND
2014-12-16201412180386AMND
2014-12-16201412180400AMND
2014-12-16201412180438AMND