Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Cobalt

Hazardville Water Company

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
2014N/A00N/A
2015ND240ND
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
2015-01-2135172671007AMND
2015-01-2135172671015AMND
2015-01-2135172671017AMND
2015-01-2135172671013AMND
2015-01-2135172671001AMND
2015-01-2135172671023AMND
2015-01-2135172671021AMND
2015-01-2135172671019AMND
2015-01-2135172671005AMND
2015-01-2135172671003AMND
2015-01-2135172671009AMND
2015-01-2135172671011AMND
2015-07-2135200095007AMND
2015-07-2135200095003AMND
2015-07-2135200095005AMND
2015-07-2135200095001AMND
2015-07-2135200095011AMND
2015-07-2135200095013AMND
2015-07-2135200095015AMND
2015-07-2135200095017AMND
2015-07-2135200095023AMND
2015-07-2135200095019AMND
2015-07-2135200095009AMND
2015-07-2135200095021AMND