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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

Oklahoma University

NOTE: Oklahoma University purchases water from Norman which is required to test for cobalt. Sample information shown below was taken by Norman.

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

 

80

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
2013ND760ND
2014ND20ND
2015ND60ND
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

NOTE: Oklahoma University purchases water from Norman which is required to test for cobalt. Sample information shown below was taken by Norman.

Date Lab ID Result
2013-04-08713272-8691ND
2013-04-08713324-8826ND
2013-04-08713266-8810ND
2013-04-08713289-8691ND
2013-04-08713252-8810ND
2013-04-08713283-8691ND
2013-04-08713212-8905ND
2013-04-08713210-8905ND
2013-04-08713268-8691ND
2013-04-08713285-8691ND
2013-04-08713250-8679ND
2013-04-08713225-8905ND
2013-04-08713227-8905ND
2013-04-08713328-8826ND
2013-04-08713281-8691ND
2013-04-08713279-8691ND
2013-04-08713214-8905ND
2013-04-08713201-8905ND
2013-04-08713203-8905ND
2013-04-08713205-8905ND
2013-04-08713207-8905ND
2013-04-08713242-8679ND
2013-04-08713248-8905ND
2013-04-08713316-8826ND
2013-04-08713229-8905ND
2013-04-08713314-8826ND
2013-04-08713254-8810ND
2013-04-08713235-8905ND
2013-04-08713322-8826ND
2013-04-08713196-8679ND
2013-04-08713308-8826ND
2013-04-08713270-8691ND
2013-04-08713199-8679ND
2013-04-08713262-8691ND
2013-04-08713304-8826ND
2013-04-08713258-8810ND
2013-07-10730579-9319ND
2013-07-10730583-9319ND
2013-07-10730577-9319ND
2013-07-10730581-9319ND
2013-10-16753372-10161ND
2013-10-16753344-10161ND
2013-10-16753754-10147ND
2013-10-16753366-10161ND
2013-10-16753374-10161ND
2013-10-16753511-10147ND
2013-10-16753370-10161ND
2013-10-16753362-10161ND
2013-10-16753410-10161ND
2013-10-16753386-10161ND
2013-10-16753368-10161ND
2013-10-16753364-10161ND
2013-10-16753429-10161ND
2013-10-16753358-10161ND
2013-10-16753360-10161ND
2013-10-16753416-10161ND
2013-10-16753423-10161ND
2013-10-16753509-10147ND
2013-10-16753382-10161ND
2013-10-16753427-10161ND
2013-10-16753378-10161ND
2013-10-16753401-10161ND
2013-10-16753418-10161ND
2013-10-16753352-10161ND
2013-10-16753413-10161ND
2013-10-16753425-10161ND
2013-10-16753513-10147ND
2013-10-16753346-10161ND
2013-10-16753384-10161ND
2013-10-16753376-10161ND
2013-10-16753397-10161ND
2013-10-16753399-10161ND
2013-10-16753380-10161ND
2013-10-16753348-10161ND
2013-10-16753350-10161ND
2013-10-16753421-10161ND
2014-02-11770262-10752ND
2014-02-11770264-10752ND
2014-02-11770224-10752ND
2014-03-24776656-11013ND