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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of Mountain View

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND260ND
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
2014-02-192978663ND
2014-02-192978607ND
2014-02-192978629ND
2014-02-192978659ND
2014-02-192978651ND
2014-02-192978643ND
2014-02-192978588ND
2014-02-192978597ND
2014-02-192978669ND
2014-02-192978673ND
2014-05-083025973ND
2014-05-083025969ND
2014-05-083025950ND
2014-05-083025959ND
2014-08-213091444ND
2014-08-213091397ND
2014-08-213091406ND
2014-08-213091421ND
2014-08-213091436ND
2014-08-213091468ND
2014-08-213091498ND
2014-08-213091448ND
2014-11-193143603ND
2014-11-193143588ND
2014-11-193143576ND
2014-11-193143618ND