Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Devens Massdevelopment

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND30ND
2020ND60ND
2021ND60ND
2022ND70ND
2023ND70ND

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 Result
2018-04-18ND
2018-04-18ND
2019-04-10ND
2019-04-10ND
2019-11-12ND
2020-05-20ND
2020-05-20ND
2020-05-20ND
2020-05-20ND
2020-05-20ND
2020-05-20ND
2021-04-28ND
2021-04-28ND
2021-04-28ND
2021-04-28ND
2021-04-28ND
2021-04-28ND
2022-05-27ND
2022-06-01ND
2022-06-01ND
2022-06-01ND
2022-06-01ND
2022-06-01ND
2022-06-01ND
2023-06-07ND
2023-06-07ND
2023-06-14ND
2023-06-14ND
2023-06-14ND
2023-06-14ND
2023-10-05ND