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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of The Dalles

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
2014ND180ND
2015ND20ND
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
2014-05-07A4D1741-07AND
2014-05-07A4D1741-01AND
2014-05-07A4D1741-12AND
2014-05-07A4D1741-14AND
2014-05-07A4D1741-04AND
2014-05-07A4D1741-10AND
2014-05-21A4D1758-01AND
2014-05-21A4D1758-04AND
2014-08-06A4G2099-01AND
2014-08-06A4G2099-04AND
2014-10-23A4J1614-01AND
2014-10-23A4J1614-07AND
2014-10-23A4J1614-04AND
2014-10-23A4J1614-10AND
2014-10-23A4J1614-12AND
2014-10-23A4J1614-14AND
2014-11-26A4K1911-01AND
2014-11-26A4K1911-03AND
2015-02-10A5A0912-01AND
2015-02-10A5A0912-04AND