Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Caddo Lake Water Supply Corporation

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-09-20Q1837726002ND
2018-09-20Q1837726003ND
2019-06-10Q1933418005ND
2019-06-10Q1933418007ND
2020-10-22Q2041223001ND
2020-10-22Q2041223003ND
2021-05-24Q2113525008ND
2021-05-24Q2113525010ND
2022-11-22Q2235079008ND
2022-11-22Q2235079010ND
2023-06-29Q2325157001ND
2023-06-29Q2325157003ND