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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Hilton Head PSD 1

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

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND180ND
2014ND20ND
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
2013-05-06201305080484AMND
2013-05-06201305080359AMND
2013-05-06201305080495AMND
2013-05-06201305080513AMND
2013-05-06201305080492AMND
2013-05-06201305080461AMND
2013-05-06201305080433AMND
2013-05-06201305080329AMND
2013-08-05201308070416AMND
2013-08-05201308070418AMND
2013-11-04201311060562AMND
2013-11-04201311060564AMND
2013-11-04201311060558AMND
2013-11-04201311060550AMND
2013-11-04201311060568AMND
2013-11-04201311060556AMND
2013-11-04201311060560AMND
2013-11-05201311060554AMND
2014-02-03201402050108AMND
2014-02-03201402050138AMND