Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Connecticut Water Company - Hebron Center Division

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
2018ND10ND
2019ND10ND
2020ND10ND
2021ND20ND
2022ND40ND
2023ND50ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 60 ppb

The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 100 ppb

The legal limit for trans-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
2018-04-09CA16134VOC1ND
2019-02-11VOC1 200521212ND
2020-09-21VOC1 200591010ND
2021-08-31300048791 300048800ND
2021-10-25V300088205 300088206ND
2022-01-13CK16254ND
2022-04-21CL13693ND
2022-07-07CL72297ND
2022-10-18CM65668ND
2023-01-12CN22972ND
2023-04-17CN85298ND
2023-08-15CO75345ND
2023-10-17CP28039ND
2023-10-24CP33075ND