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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

Connecticut Water Company - Shoreline Region-chester System

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-01-0481962VOC1ND
2012-04-2584275VOC1ND
2013-01-08247VOC1ND
2013-06-209056VOC1ND
2014-01-29140130CWCAVOC1ND
2014-05-146604VOC1ND
2015-02-12BH73176VOC1ND
2015-06-17BJ32481VOC1ND
2016-02-11BK64356VOC1ND
2016-05-25BN40398VOC1ND
2017-01-18BX33133VOC1ND
2017-11-15BZ42288VOC1ND