trans-1,2-Dichloroethylene
Elba Water Works
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 | 4 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-10-19 | 18100572-001A | ND |
| 2019-03-27 | 19030659-001A | ND |
| 2019-03-27 | 19030659-002A | ND |
| 2019-03-27 | 19030659-003A | ND |
| 2019-11-05 | 20128986001_IVOC | ND |
| 2020-11-17 | 20180408001_IVOC | ND |
| 2021-12-10 | 35683528001_IVOC | ND |
| 2022-03-29 | 35706621002_IVOC | ND |
| 2022-03-29 | 35706621001_IVOC | ND |
| 2022-09-22 | 35748613002_IVOC | ND |
| 2022-11-17 | 35760586001_IVOC | ND |
| 2022-12-15 | 35766914001_IVOC | ND |
| 2023-01-19 | 35773664001_IVOC | ND |
| 2023-04-06 | 35790837001_IVOC | ND |
| 2023-09-21 | 35829187001_IVOC | ND |
| 2023-10-19 | 35835674001_IVOC | ND |
| 2023-10-19 | 35835674002_IVOC | ND |