trans-1,2-Dichloroethylene
Barton Dade Cedar & Jasper Counties Consolidated Public Water Supply District 1
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 13 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 9 | 0 | ND |
| 2023 | ND | 2 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2019-05-20 | AD47670 | ND |
| 2019-05-20 | AD47671 | ND |
| 2019-05-20 | AD47672 | ND |
| 2019-05-20 | AD47673 | ND |
| 2019-05-20 | AD47674 | ND |
| 2019-05-20 | AD47675 | ND |
| 2019-05-20 | AD47676 | ND |
| 2019-05-20 | AD47677 | ND |
| 2019-05-20 | AD47669 | ND |
| 2019-07-15 | AD53004 | ND |
| 2019-07-15 | AD53005 | ND |
| 2019-10-21 | AD57423 | ND |
| 2019-10-21 | AD57424 | ND |
| 2020-01-20 | AD60735 | ND |
| 2020-01-20 | AD60734 | ND |
| 2020-05-26 | 2009163 | ND |
| 2020-05-26 | 2009164 | ND |
| 2021-04-13 | 2104041 | ND |
| 2021-04-13 | 2104042 | ND |
| 2022-04-20 | 2204750 | ND |
| 2022-04-20 | 2204751 | ND |
| 2022-05-17 | 2211810 | ND |
| 2022-05-17 | 2211809 | ND |
| 2022-05-17 | 2211808 | ND |
| 2022-05-17 | 2211807 | ND |
| 2022-05-17 | 2211806 | ND |
| 2022-05-17 | 2211805 | ND |
| 2022-05-17 | 2211804 | ND |
| 2023-04-17 | 2303745 | ND |
| 2023-04-17 | 2303746 | ND |