trans-1,2-Dichloroethylene
Harleton Water Supply Corporation
NOTE: Harleton Water Supply Corporation purchases water from Northeast Texas Municipal Water District which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Northeast Texas Municipal Water District.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
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: Harleton Water Supply Corporation purchases water from Northeast Texas Municipal Water District which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Northeast Texas Municipal Water District.
| Date | Lab ID | Result |
|---|---|---|
| 2018-09-20 | Q1837729001 | ND |
| 2019-08-14 | Q1954876001 | ND |
| 2020-04-23 | Q2016185003 | ND |
| 2020-08-18 | Q2032884003 | ND |
| 2021-02-09 | Q2103854003 | ND |
| 2022-03-01 | Q2206887005 | ND |
| 2023-01-18 | Q2302651002 | ND |