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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Aqua Pa Hatboro

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.

MORE ABOUT THIS CONTAMINANT

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND90ND
2015ND60ND
2016ND50ND
2017ND50ND
2018ND50ND
2019ND50ND

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
2014-01-07AE19909ND
2014-02-04AE22451ND
2014-02-04AE22453ND
2014-02-04AE22450ND
2014-02-21AE23907ND
2014-04-08AE28690ND
2014-06-17AE36363ND
2014-07-24AE40860ND
2014-11-19AE56461ND
2015-02-0312401076ND
2015-02-0312401118ND
2015-02-0312401097ND
2015-02-0312401055ND
2015-02-0312401034ND
2015-12-1513632483ND
2016-01-1913751832ND
2016-01-1913751748ND
2016-01-1913751769ND
2016-01-1913751790ND
2016-01-1913751811ND
2017-03-2815794755ND
2017-03-2815794734ND
2017-06-2016256723ND
2017-06-2016256702ND
2017-12-1317161007ND
2018-03-14AF77909ND
2018-03-14AF77910ND
2018-03-14AF77911ND
2018-03-14AF77912ND
2018-03-14AF77913ND
2019-03-13AG10399ND
2019-03-13AG10400ND
2019-03-13AG10406ND
2019-03-13AG10402ND
2019-03-20AG12154ND