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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

San Antonio Water System Northeast

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

 

24

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
2013ND100ND
2014ND140ND
2015N/A00N/A
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

Date Lab ID Result
2013-10-08201310110250AMND
2013-10-08201310110260AMND
2013-10-08201310110256AMND
2013-10-08201310110254AMND
2013-10-08201310110244AMND
2013-10-08201310110242AMND
2013-10-08201310110258AMND
2013-10-08201310110246AMND
2013-10-08201310110248AMND
2013-10-08201310110252AMND
2014-01-24201401270009AMND
2014-01-24201401270007AMND
2014-04-14201404150347AMND
2014-04-14201404150339AMND
2014-04-14201404150333AMND
2014-04-14201404150345AMND
2014-04-14201404150335AMND
2014-04-14201404150337AMND
2014-04-14201404150343AMND
2014-04-14201404150341AMND
2014-04-15201404160660AMND
2014-04-15201404160662AMND
2014-07-25201407260068AMND
2014-07-25201407260066AMND