Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Cobalt

Green Valley SUD

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

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND460ND
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
2013-01-221301548-027AND
2013-01-221301548-013AND
2013-01-221301548-001AND
2013-01-221301548-019AND
2013-01-221301548-021AND
2013-01-221301548-023AND
2013-01-221301548-017AND
2013-01-221301548-011AND
2013-01-221301548-025AND
2013-01-221301548-029AND
2013-01-221301548-031AND
2013-01-221301548-015AND
2013-01-221301548-005AND
2013-01-221301548-007AND
2013-01-221301548-003AND
2013-01-221301548-009AND
2013-04-251304897-003AND
2013-04-251304897-015AND
2013-04-251304897-005AND
2013-04-251304897-007AND
2013-04-251304897-001AND
2013-04-251304897-013AND
2013-04-251304897-009AND
2013-04-251304897-011AND
2013-07-16Q1303745001ND
2013-07-16Q1303745003ND
2013-07-16Q1303745013ND
2013-07-16Q1303745015ND
2013-07-16Q1303745025ND
2013-07-16Q1303745019ND
2013-07-16Q1303745011ND
2013-07-16Q1303745007ND
2013-07-16Q1303745023ND
2013-07-16Q1303745021ND
2013-07-16Q1303745027ND
2013-07-16Q1303745009ND
2013-07-16Q1303745005ND
2013-07-16Q1303745017ND
2013-07-25Q1304284001ND
2013-10-29Q1310017011ND
2013-10-29Q1310017007ND
2013-10-29Q1310017009ND
2013-10-29Q1310017013ND
2013-10-29Q1310017003ND
2013-10-29Q1310017005ND
2013-10-29Q1310017001ND