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EWG's Tap Water Database — 2019 UPDATE

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1,3-Butadiene

San Antonio Water System Northeast

 

12

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
2013ND50ND
2014ND70ND
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 0.0103 ppb

The EWG Health Guideline of 0.0103 ppb for 1,3-butadiene was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-10-08201310110244AMND
2013-10-08201310110250AMND
2013-10-08201310110246AMND
2013-10-08201310110248AMND
2013-10-08201310110242AMND
2014-01-24201401270007AMND
2014-04-14201404150333AMND
2014-04-14201404150345AMND
2014-04-14201404150337AMND
2014-04-14201404150335AMND
2014-04-15201404160660AMND
2014-07-25201407260066AMND