Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

City of Hallettsville

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND50ND
2022ND30ND
2023ND30ND

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
2018-09-19AE40773ND
2018-09-19AE40775ND
2018-09-19AE40759ND
2019-08-22AE80240ND
2019-08-22AE80242ND
2019-08-22AE80246ND
2020-05-19AF11753ND
2020-05-19AF11755ND
2020-05-19AF11757ND
2021-06-10AF57493ND
2021-06-10AF57525ND
2021-06-10AF57491ND
2021-07-27AF63450ND
2021-11-03AF75593ND
2022-08-04AG07869ND
2022-08-04AG07873ND
2022-08-04AG07875ND
2023-03-06Q2309810001ND
2023-03-06Q2309810003ND
2023-03-06Q2309810005ND