cis-1,2-Dichloroethylene
South Middleton Twp Water Authority
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.
33
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 9 | 0 | ND |
| 2022 | ND | 9 | 0 | ND |
| 2023 | ND | 6 | 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 |
|---|---|---|
| 2018-05-15 | 8052993-01 | ND |
| 2018-05-15 | 8052993-02 | ND |
| 2018-05-15 | 8052993-03 | ND |
| 2019-05-14 | 9052836-02 | ND |
| 2019-05-14 | 9052836-03 | ND |
| 2019-05-14 | 9052836-01 | ND |
| 2020-05-14 | 22355416.00 | ND |
| 2020-05-14 | 22355395.00 | ND |
| 2020-05-14 | 22355374.00 | ND |
| 2021-02-17 | 24007049.00 | ND |
| 2021-02-17 | 24007001.00 | ND |
| 2021-02-17 | 24007025.00 | ND |
| 2021-05-18 | 24579628.00 | ND |
| 2021-05-18 | 24579677.00 | ND |
| 2021-05-18 | 24579653.00 | ND |
| 2021-08-17 | 25164845.00 | ND |
| 2021-08-17 | 25164894.00 | ND |
| 2021-08-17 | 25164870.00 | ND |
| 2022-05-17 | 26788395.00 | ND |
| 2022-05-17 | 26788444.00 | ND |
| 2022-05-17 | 26788420.00 | ND |
| 2022-08-23 | 27587373.00 | ND |
| 2022-08-23 | 27587374.00 | ND |
| 2022-08-23 | 27587372.00 | ND |
| 2022-11-16 | 27948222.00 | ND |
| 2022-11-16 | 27948246.00 | ND |
| 2022-11-16 | 27948197.00 | ND |
| 2023-03-30 | 28650579.00 | ND |
| 2023-03-30 | 28650628.00 | ND |
| 2023-03-30 | 28650604.00 | ND |
| 2023-05-25 | 29247716.00 | ND |
| 2023-05-25 | 29247715.00 | ND |
| 2023-05-25 | 29247714.00 | ND |