Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Orfordville Waterworks

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND30ND
2021ND10ND
2022ND40ND
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
2018-03-28373260001ND
2018-08-21402279001ND
2019-07-25459720001ND
2019-09-19471338001ND
2020-08-17520103001ND
2020-08-17520103002ND
2020-08-17520104001ND
2021-09-20584410001ND
2022-03-10609139001ND
2022-06-27627244001ND
2022-09-27645090001ND
2022-09-27645083001ND
2023-08-24696786001ND
2023-09-22702180001ND