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EWG's Tap Water Database

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Cobalt

Plainview WD

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

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012N/A00N/A
2013N/A00N/A
20141.59 ppb158ND - 5.20 ppb
2015N/A00N/A

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 70 ppb

The 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
2014-05-1335138482009AM2.00 ppb
2014-05-1335138482010AMND
2014-05-1335138482003AMND
2014-05-1335138482007AM2.20 ppb
2014-05-1435138482001AM5.20 ppb
2014-05-1435138482005AMND
2014-05-1435138482012AMND
2014-05-3035140106001AM4.80 ppb
2014-11-0535163400001AM2.20 ppb
2014-11-0535163400003AM1.80 ppb
2014-11-1235163769003AMND
2014-11-1235164080003AMND
2014-11-1235164080001AM2.10 ppb
2014-11-1235163769001AMND
2014-11-1335164082001AM3.50 ppb