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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of Conroe

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

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
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
2014-05-28Q1418029025ND
2014-05-28Q1418029005ND
2014-05-28Q1418029001ND
2014-05-28Q1418029017ND
2014-05-28Q1418029013ND
2014-05-28Q1418029021ND
2014-05-28Q1418029009ND
2014-05-29Q1418221009ND
2014-05-29Q1418221001ND
2014-05-29Q1418221005ND
2014-11-18Q1456289033ND
2014-11-18Q1456289029ND
2014-11-18Q1456289021ND
2014-11-18Q1456289025ND
2014-11-18Q1456740005ND
2014-11-18Q1456289001ND
2014-11-18Q1456289005ND
2014-11-18Q1456289037ND
2014-11-18Q1456289017ND
2014-11-18Q1456289013ND