Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Hanson Water Department

NOTE: Hanson Water Department purchases water from Brockton Water Commission which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Brockton Water Commission.

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND60ND
2020ND50ND
2021ND70ND
2022ND10ND
2023ND10ND

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

NOTE: Hanson Water Department purchases water from Brockton Water Commission which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Brockton Water Commission.

Date Result
2018-03-06ND
2018-03-06ND
2019-03-11ND
2019-03-12ND
2020-03-10ND
2020-03-24ND
2021-03-03ND
2021-04-16ND
2022-03-02ND
2023-03-01ND