trans-1,2-Dichloroethylene
City of Abbott
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2018-03-12 | Q1809947001 | ND |
| 2018-03-12 | Q1809947004 | ND |
| 2019-07-15 | Q1944695006 | ND |
| 2019-07-15 | Q1944695008 | ND |
| 2020-10-14 | Q2040304001 | ND |
| 2020-10-14 | Q2040304003 | ND |
| 2021-12-09 | Q2134637005 | ND |
| 2021-12-09 | Q2134637007 | ND |
| 2022-10-18 | Q2231549001 | ND |
| 2022-10-18 | Q2231549003 | ND |
| 2023-04-27 | Q2315896001 | ND |
| 2023-04-27 | Q2315896003 | ND |