Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Cobalt

City of Brentwood

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
2014ND380ND
2015ND20ND
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
2014-02-24201402250324AMND
2014-02-24201402250179AMND
2014-02-24201402250188AMND
2014-02-25201402260618AMND
2014-02-25201402260651AMND
2014-02-25201402260775AMND
2014-02-25201402260837AMND
2014-02-26201402270292AMND
2014-02-26201402270193AMND
2014-02-26201402270327AMND
2014-02-26201402270329AMND
2014-02-26201402270276AMND
2014-02-26201402270271AMND
2014-02-27201402280329AMND
2014-02-27201402280318AMND
2014-03-06201403070191AMND
2014-05-28201405290400AMND
2014-05-28201405290453AMND
2014-08-25201408260401AMND
2014-08-25201408260279AMND
2014-08-25201408260388AMND
2014-08-25201408260371AMND
2014-08-25201408260284AMND
2014-08-25201408260286AMND
2014-08-25201408270535AMND
2014-08-25201408260385AMND
2014-08-28201408290722AMND
2014-08-28201408290718AMND
2014-08-28201408300128AMND
2014-08-28201408290720AMND
2014-08-28201408300027AMND
2014-08-28201408300019AMND
2014-08-28201408300001AMND
2014-08-28201408300021AMND
2014-08-28201408300025AMND
2014-08-28201408300023AMND
2014-11-19201411200471AMND
2014-11-19201411200354AMND
2015-02-19201502200320AMND
2015-02-19201502200327AMND