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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Ridgewood Water

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

MORE ABOUT THIS CONTAMINANT

 

56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND510ND
2015ND50ND
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
2014-06-25201406260460AMND
2014-06-25201406260486AMND
2014-06-25201406260450AMND
2014-06-25201406260464AMND
2014-06-25201406260471AMND
2014-06-25201406260462AMND
2014-06-25201406260440AMND
2014-06-25201406260430AMND
2014-06-25201406260442AMND
2014-06-25201406260488AMND
2014-06-25201406260482AMND
2014-06-25201406260484AMND
2014-06-25201406260454AMND
2014-06-25201406260438AMND
2014-06-25201406260490AMND
2014-06-30201407010192AMND
2014-06-30201407010210AMND
2014-06-30201407010140AMND
2014-06-30201407010155AMND
2014-06-30201407010212AMND
2014-06-30201407010206AMND
2014-06-30201407010208AMND
2014-06-30201407010185AMND
2014-06-30201407010200AMND
2014-06-30201407010202AMND
2014-08-06201408070359AMND
2014-08-06201408070379AMND
2014-08-06201408070442AMND
2014-12-15201412160614AMND
2014-12-15201412160626AMND
2014-12-15201412160710AMND
2014-12-15201412160712AMND
2014-12-15201412160312AMND
2014-12-15201412160703AMND
2014-12-15201412160366AMND
2014-12-15201412160634AMND
2014-12-15201412160731AMND
2014-12-17201412180307AMND
2014-12-17201412180364AMND
2014-12-17201412180314AMND
2014-12-17201412180335AMND
2014-12-17201412180430AMND
2014-12-17201412180416AMND
2014-12-17201412180398AMND
2014-12-28201412300450AMND
2014-12-29201412300468AMND
2014-12-29201412300394AMND
2014-12-29201412300480AMND
2014-12-29201412300448AMND
2014-12-29201412300488AMND
2014-12-29201412300485AMND
2015-06-04201506050379AMND
2015-06-04201506050201AMND
2015-06-04201506050442AMND
2015-06-04201506050454AMND
2015-09-23201509240493AMND