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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Manville WSC

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

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND280ND
2014N/A00N/A
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
2013-05-021305095-001AND
2013-05-021305095-007AND
2013-05-021305095-020AND
2013-05-021305095-016AND
2013-05-021305095-022AND
2013-05-081305095-025AND
2013-05-081305095-031AND
2013-05-081305095-029AND
2013-05-081305095-027AND
2013-05-081305095-033AND
2013-05-081305095-035AND
2013-05-081305095-041AND
2013-05-081305095-039AND
2013-05-081305095-037AND
2013-08-15Q1305578001ND
2013-08-15Q1305578003ND
2013-11-04Q1311286009ND
2013-11-04Q1311286007ND
2013-11-04Q1311286001ND
2013-11-04Q1311286019ND
2013-11-04Q1311286015ND
2013-11-04Q1311286013ND
2013-11-04Q1311286011ND
2013-11-04Q1311286017ND
2013-11-04Q1311286005ND
2013-11-04Q1311286003ND
2013-11-08Q1312522001ND
2013-11-08Q1312522003ND