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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Artesian Water Company

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

MORE ABOUT THIS CONTAMINANT

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.279 ppb243ND - 4.40 ppb
20140.425 ppb242ND - 5.60 ppb
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
2013-07-172860799ND
2013-07-172860437ND
2013-07-172860433ND
2013-07-172860445ND
2013-07-172860928ND
2013-07-172860757ND
2013-07-172860415ND
2013-07-172860373ND
2013-07-172860345ND
2013-07-1728602571.10 ppb
2013-07-172860334ND
2013-07-172860939ND
2013-07-172860193ND
2013-07-172860835ND
2013-07-172860770ND
2013-07-172860384ND
2013-07-172860815ND
2013-07-172860884ND
2013-07-1728607421.20 ppb
2013-07-1728605074.40 ppb
2013-10-152913513ND
2013-10-152913845ND
2013-10-152913521ND
2013-10-302922362ND
2014-01-282963991ND
2014-01-282964221ND
2014-01-282964032ND
2014-01-282964125ND
2014-01-282964056ND
2014-01-282964087ND
2014-01-2829641835.60 ppb
2014-01-282964110ND
2014-01-2829642694.60 ppb
2014-01-282964252ND
2014-01-282964151ND
2014-01-282964210ND
2014-01-282964168ND
2014-01-282964037ND
2014-01-282964240ND
2014-01-282964071ND
2014-01-282964227ND
2014-01-282964099ND
2014-03-132991426ND
2014-04-233014016ND
2014-04-233014337ND
2014-04-233014020ND
2014-04-233014030ND
2014-07-163064491ND