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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of Kuna

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

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND200ND
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
2015-03-05201502260226AMND
2015-03-05201502260225AMND
2015-03-05201502260229AMND
2015-03-05201502260222AMND
2015-03-16201503170835AMND
2015-03-16201502260232AMND
2015-03-17201503180643AMND
2015-03-17201502260221AMND
2015-03-18201503190584AMND
2015-03-18201502260230AMND
2015-09-08201508260070AMND
2015-09-08201508260077AMND
2015-09-08201508260073AMND
2015-09-09201508260072AMND
2015-09-09201508260076AMND
2015-09-10201508260075AMND
2015-09-17201508260074AMND
2015-09-17201508260071AMND
2015-09-29201508260066AMND
2015-09-29201509300245AMND