Know Your Environment. Protect Your Health.

Cobalt

Hillview Water Company-oakhurst/sierra Lakes

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
2014ND120ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2014-04-28106548PND
2014-04-28106549PND
2014-04-28106550PND
2014-04-28106551PND
2014-04-28306633PND
2014-04-30306634PND
2014-10-21109399PND
2014-10-21109400PND
2014-10-21109401PND
2014-10-21109402PND
2014-10-21309324PND
2014-10-21309325PND