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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Ruidoso Water System

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

MORE ABOUT THIS CONTAMINANT

 

32

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
20150.0500 ppb321ND - 1.60 ppb
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
2015-01-29201501310036AMND
2015-01-29201501310030AMND
2015-01-29201501310040AMND
2015-01-29201501310038AMND
2015-01-29201501310026AMND
2015-01-29201501310028AMND
2015-01-29201501310034AMND
2015-01-29201501310032AMND
2015-04-28201504060030AMND
2015-04-29201504060036AMND
2015-04-29201504060027AMND
2015-04-29201504060035AMND
2015-04-29201504060037AMND
2015-04-29201504060028AMND
2015-04-29201504060029AMND
2015-05-27201505280149AMND
2015-07-21201506230641AMND
2015-07-21201506230642AMND
2015-07-21201506230644AMND
2015-07-21201506230635AMND
2015-07-21201506230634AMND
2015-07-21201506230633AMND
2015-07-21201506230636AMND
2015-09-09201509110119AMND
2015-10-14201509050107AMND
2015-10-14201509050108AMND
2015-10-14201509050105AMND
2015-10-14201509050116AMND
2015-10-14201509050113AMND
2015-10-14201509050115AMND
2015-10-14201509050106AM1.60 ppb
2015-10-14201509050114AMND