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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

San Fernando Water Department

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
2012N/A00N/A
2013N/A00N/A
2014ND130ND
2015ND30ND
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
2014-04-10201404110048AMND
2014-04-10201404110047AMND
2014-04-10201404110050AMND
2014-04-10201404110046AMND
2014-04-16201404160746AMND
2014-07-08201407080437AMND
2014-07-08201407080441AMND
2014-07-08201407080439AMND
2014-10-23201410230580AMND
2014-11-19201411200136AMND
2014-11-19201411200134AMND
2014-11-19201411200138AMND
2014-11-19201411200140AMND
2015-01-07201501070350AMND
2015-01-07201501070348AMND
2015-01-07201501070346AMND