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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

Aqua Pa Uwchlan

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND60ND
2014ND60ND
2015ND60ND
2016ND60ND
2017ND60ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2012-02-06AD37757ND
2012-02-06AD37758ND
2012-02-23AD39504ND
2012-02-23AD39503ND
2012-02-29AD39501ND
2012-05-25AD49447ND
2013-02-05AD79498ND
2013-02-05AD79499ND
2013-02-20AD80828ND
2013-02-20AD80829ND
2013-03-05AD82342ND
2013-05-21AD90752ND
2014-02-06AE22430ND
2014-02-14AE22385ND
2014-02-14AE22387ND
2014-02-21AE23946ND
2014-02-21AE23943ND
2014-04-23AE29861ND
2015-02-0312395450ND
2015-02-0312395534ND
2015-02-0312395492ND
2015-02-0312395513ND
2015-02-0412395429ND
2015-02-0412395471ND
2016-01-2213746211ND
2016-01-2213746232ND
2016-01-2213746253ND
2016-01-2213746274ND
2016-02-1013864178ND
2016-02-1013864199ND
2017-03-2815787951ND
2017-03-2815787972ND
2017-04-1915928758ND
2017-04-1915928779ND
2017-04-2115928737ND
2017-06-2116249802ND