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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

Bethesda WSC

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

MORE ABOUT THIS CONTAMINANT

 

72

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND720ND
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
2013-02-181302519-031AND
2013-02-181302519-015AND
2013-02-181302519-017AND
2013-02-181302519-027AND
2013-02-181302519-025AND
2013-02-181302519-019AND
2013-02-181302519-007AND
2013-02-181302519-001AND
2013-02-181302519-003AND
2013-02-181302519-009AND
2013-02-181302519-013AND
2013-02-181302519-011AND
2013-02-181302519-041AND
2013-02-181302519-039AND
2013-02-181302519-043AND
2013-02-181302519-029AND
2013-02-181302519-037AND
2013-02-181302519-047AND
2013-02-181302519-051AND
2013-02-181302519-045AND
2013-02-181302519-033AND
2013-02-181302519-005AND
2013-02-181302519-049AND
2013-02-181302519-035AND
2013-02-181302519-023AND
2013-02-181302519-021AND
2013-02-281302519-085AND
2013-02-281302519-087AND
2013-02-281302519-083AND
2013-02-281302519-077AND
2013-02-281302519-081AND
2013-02-281302519-079AND
2013-02-281302519-075AND
2013-02-281302519-073AND
2013-05-22Q1301418001ND
2013-05-22Q1301418003ND
2013-08-12Q1305399029ND
2013-08-12Q1305399033ND
2013-08-12Q1305399057ND
2013-08-12Q1305399037ND
2013-08-12Q1305399047ND
2013-08-12Q1305399039ND
2013-08-12Q1305399051ND
2013-08-12Q1305399023ND
2013-08-12Q1305399041ND
2013-08-12Q1305399019ND
2013-08-12Q1305399043ND
2013-08-12Q1305399031ND
2013-08-12Q1305399027ND
2013-08-12Q1305399003ND
2013-08-12Q1305399007ND
2013-08-13Q1305399035ND
2013-08-13Q1305399009ND
2013-08-13Q1305399013ND
2013-08-13Q1305399015ND
2013-08-13Q1305399017ND
2013-08-13Q1305399011ND
2013-08-13Q1305399055ND
2013-08-13Q1305399025ND
2013-08-13Q1305399053ND
2013-08-13Q1305399065ND
2013-08-13Q1305399049ND
2013-08-13Q1305399001ND
2013-08-13Q1305399063ND
2013-08-13Q1305399021ND
2013-08-13Q1305399061ND
2013-08-13Q1305399005ND
2013-08-13Q1305399059ND
2013-08-13Q1305399045ND
2013-09-19Q1307762001ND
2013-11-14Q1313379001ND
2013-11-14Q1313379003ND