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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

City of Garden Grove

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

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND300ND
2014ND10ND
2015N/A00N/A
2016N/A00N/A
2017N/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
2013-03-043010062821ND
2013-03-053010062816ND
2013-03-073010062996ND
2013-05-133010062805ND
2013-05-133010062820ND
2013-05-133010062995ND
2013-05-133010062802ND
2013-05-143010062803ND
2013-05-143010062807ND
2013-05-143010062813ND
2013-05-153010062809ND
2013-05-153010062811ND
2013-05-153010062815ND
2013-06-103010062821-2ND
2013-06-103010062816-2ND
2013-06-113010062996-2ND
2013-09-033010062821-3ND
2013-09-033010062816-3ND
2013-09-043010062996-3ND
2013-11-133010062995-2ND
2013-11-133010062820-2ND
2013-11-133010062815-2ND
2013-11-133010062811-2ND
2013-11-133010062805-2ND
2013-11-133010062813-2ND
2013-11-133010062806-2ND
2013-11-133010062809-2ND
2013-11-133010062802-2ND
2013-12-093010062816-4ND
2013-12-103010062996-4ND
2014-02-053010062821-4AND