Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Cobalt

Los Angeles County WW District 40 Reg 38 Lake Los Angeles

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

 

12

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
2013N/A00N/A
2014ND120ND
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
2014-01-15201401160354AMND
2014-01-15201401160361AMND
2014-01-15201401160359AMND
2014-01-15201401160352AMND
2014-04-14201404210013AMND
2014-04-14201404210015AMND
2014-07-09201407110429AMND
2014-07-09201407110432AMND
2014-07-09201407110443AMND
2014-07-09201407110417AMND
2014-10-08201410090507AMND
2014-10-08201410090509AMND