cis-1,2-Dichloroethylene
San Diego Municipal Utility 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.
16
Samples
0
Samples exceeding legal limit (MCL)
0
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 | 4 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 70 ppb
The legal limit for cis-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 |
|---|---|---|
| 2018-02-12 | AE13322 | ND |
| 2018-06-04 | AE28555 | ND |
| 2019-02-11 | AE53819 | ND |
| 2019-05-06 | AE64908 | ND |
| 2020-06-04 | AF14192 | ND |
| 2020-06-04 | AF14196 | ND |
| 2021-06-07 | AF57519 | ND |
| 2021-07-22 | AF63070 | ND |
| 2021-11-29 | AF77508 | ND |
| 2021-11-29 | AF77520 | ND |
| 2022-01-20 | AF80982 | ND |
| 2022-01-20 | AF81002 | ND |
| 2023-02-22 | AG29940 | ND |
| 2023-04-24 | AG37704 | ND |
| 2023-07-24 | AG49832 | ND |
| 2023-11-15 | AG63792 | ND |