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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Mountain Water Company

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

 

52

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND160ND
2014ND220ND
2015ND140ND
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
2013-05-07718194-8912ND
2013-05-08718433-8920ND
2013-05-14719518-8989ND
2013-05-14719477-8989ND
2013-05-14719520-8989ND
2013-05-15719821-9000ND
2013-05-15719823-9000ND
2013-05-21720742-9000ND
2013-11-19759553-10377ND
2013-11-19759549-10377ND
2013-11-19759535-10377ND
2013-11-20759882-10381ND
2013-11-20759880-10381ND
2013-11-25760469-10414ND
2013-11-25760458-10414ND
2013-11-25760466-10414ND
2014-05-20790727-11515ND
2014-05-20790725-11515ND
2014-05-20790721-11515ND
2014-05-20790723-11515ND
2014-05-20790745-11515ND
2014-05-20790731-11515ND
2014-05-20790747-11515ND
2014-05-20790729-11515ND
2014-05-21791853-11521ND
2014-05-21791855-11521ND
2014-05-21792082-11521ND
2014-11-05830250-12898ND
2014-11-05830254-12898ND
2014-11-05830256-12898ND
2014-11-05830252-12898ND
2014-11-05830258-12898ND
2014-11-19832504-12979ND
2014-11-19832502-12979ND
2014-11-19832508-12979ND
2014-11-19832506-12979ND
2014-11-24832941-13055ND
2014-11-24832943-13055ND
2015-05-06858622-14049ND
2015-05-06858619-14049ND
2015-05-06858624-14049ND
2015-05-06858627-14049ND
2015-05-12859529-14098ND
2015-05-12859531-14150ND
2015-05-12859527-14098ND
2015-11-09893224-15426ND
2015-11-09893228-15426ND
2015-11-09893222-15426ND
2015-11-09893230-15426ND
2015-11-09893226-15426ND
2015-11-10893564-15426ND
2015-11-17894625-15453ND