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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

NJ American Water - Western

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

MORE ABOUT THIS CONTAMINANT

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.268 ppb383ND - 7.20 ppb
2014ND20ND
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
2013-05-0121873501ND
2013-05-0121871901ND
2013-05-0221872301ND
2013-05-0221872901ND
2013-05-0621874301ND
2013-05-0821873301ND
2013-05-0821872501ND
2013-05-0921877701ND
2013-05-0921873701ND
2013-05-13218727017.20 ppb
2013-05-13218739011.80 ppb
2013-05-1621872101ND
2013-06-0621875101ND
2013-06-1721874501ND
2013-06-1921871701ND
2013-06-2822941201ND
2013-07-0121874901ND
2013-07-2421874701ND
2013-08-1923160401ND
2013-08-1923163401ND
2013-08-2323490801ND
2013-08-2323490401ND
2013-08-2323491001ND
2013-08-3023490601ND
2013-09-0623490201ND
2013-10-1123875801ND
2013-11-0423874401ND
2013-11-0423876001ND
2013-11-0423876601ND
2013-11-0523879601ND
2013-11-0623875001ND
2013-11-0623874801ND
2013-11-0623876201ND
2013-11-0823875601ND
2013-11-0823876401ND
2013-11-08238752011.20 ppb
2013-11-1323873301ND
2013-11-1823875401ND
2014-02-0524727501ND
2014-02-0624729401ND