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EWG's Tap Water Database — 2019 UPDATE

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1,3-Butadiene

Contra Costa Water District

 

8

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
2013ND80ND
2014N/A00N/A
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
2013-03-19201303200300AMND
2013-03-20201303210135AMND
2013-06-11201306120211AMND
2013-06-12201306130200AMND
2013-09-10201309110439AMND
2013-09-11201309120475AMND
2013-12-10201312120835AMND
2013-12-11201312120837AMND