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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

Heber Springs Water System

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
2012N/A00N/A
2013ND40ND
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017N/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
2013-07-09Y131920037ND
2013-07-09Y131920036ND
2013-10-09Y132830022ND
2013-10-09Y132830021ND
2014-01-15Y140170020ND
2014-01-15Y140170019ND
2014-04-09Y141000043ND
2014-04-09Y141000042ND