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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Rockett SUD

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

 

16

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
2015ND160ND
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
2015-01-29Q1503521001ND
2015-01-29Q1503521003ND
2015-01-29Q1503521007ND
2015-01-29Q1503521005ND
2015-04-20Q1514673003ND
2015-04-20Q1514673001ND
2015-04-20Q1514673005ND
2015-04-20Q1514673007ND
2015-07-22Q1528297001ND
2015-07-22Q1528297007ND
2015-07-22Q1528297005ND
2015-07-22Q1528297003ND
2015-10-19Q1540792001ND
2015-10-19Q1540792007ND
2015-10-19Q1540792005ND
2015-10-19Q1540792003ND