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EWG's Tap Water Database

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Cobalt

Danville City Water Works

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012N/A00N/A
2013ND60ND
2014ND20ND
2015N/A00N/A

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 70 ppb

The 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
2013-06-18201307100729AMND
2013-06-18201307100727AMND
2013-09-23201310020095AMND
2013-09-23201310020097AMND
2013-12-04201312110755AMND
2013-12-04201312110757AMND
2014-03-19201403260417AMND
2014-03-19201403260415AMND