Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

East Hampton WPCA - Royal Oaks 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
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-03-13116549GEND
2018-03-13116550GEND
2019-09-24127776ND
2019-09-24127777ND
2020-02-25130648ND
2020-02-25130649ND
2021-12-28144447ND
2021-12-28144448ND
2022-10-12152056ND
2022-10-12152057ND
2023-09-28163605ND
2023-12-28166829ND