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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

City of Nampa

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

 

34

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
2014ND340ND
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
2014-01-29140131024-006ND
2014-01-29140131024-010ND
2014-01-29140131024-011ND
2014-01-29140131024-005ND
2014-01-29140131024-016ND
2014-01-30140131024-008ND
2014-01-30140131024-003ND
2014-01-30140131024-004ND
2014-01-30140131024-002ND
2014-01-30140131024-001ND
2014-01-30140131024-007ND
2014-01-30140131024-009ND
2014-01-30140131024-013ND
2014-01-30140131024-012ND
2014-01-30140131024-017ND
2014-01-30140131024-014ND
2014-01-30140131024-015ND
2014-07-21140723034-015ND
2014-07-21140723034-013ND
2014-07-21140723034-012ND
2014-07-21140723034-010ND
2014-07-21140723034-009ND
2014-07-21140723034-007ND
2014-07-21140723034-008ND
2014-07-21140723034-011ND
2014-07-21140723034-001ND
2014-07-21140723034-016ND
2014-07-21140723034-017ND
2014-07-21140723034-002ND
2014-07-21140723034-003ND
2014-07-21140723034-006ND
2014-07-21140723034-005ND
2014-07-21140723034-014ND
2014-07-22140723034-004ND