cis-1,2-Dichloroethylene
Ayer DPW Water Division
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.
44
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 | 8 | 0 | ND |
| 2019 | ND | 10 | 0 | ND |
| 2020 | ND | 8 | 0 | ND |
| 2021 | ND | 9 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 7 | 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 | Result |
|---|---|
| 2018-06-13 | ND |
| 2018-08-14 | ND |
| 2018-08-14 | ND |
| 2018-08-14 | ND |
| 2018-08-14 | ND |
| 2018-08-14 | ND |
| 2018-08-14 | ND |
| 2018-08-14 | ND |
| 2019-03-05 | ND |
| 2019-03-05 | ND |
| 2019-09-19 | ND |
| 2019-09-19 | ND |
| 2019-09-19 | ND |
| 2019-09-19 | ND |
| 2019-09-19 | ND |
| 2019-09-19 | ND |
| 2019-09-19 | ND |
| 2019-12-10 | ND |
| 2020-07-07 | ND |
| 2020-07-07 | ND |
| 2020-07-07 | ND |
| 2020-07-07 | ND |
| 2020-07-07 | ND |
| 2020-07-07 | ND |
| 2020-07-07 | ND |
| 2020-07-07 | ND |
| 2021-08-06 | ND |
| 2021-08-06 | ND |
| 2021-08-06 | ND |
| 2021-08-06 | ND |
| 2021-08-06 | ND |
| 2021-08-06 | ND |
| 2021-08-06 | ND |
| 2021-10-19 | ND |
| 2021-12-02 | ND |
| 2022-01-19 | ND |
| 2022-04-25 | ND |
| 2023-05-02 | ND |
| 2023-07-27 | ND |
| 2023-08-07 | ND |
| 2023-08-07 | ND |
| 2023-08-07 | ND |
| 2023-08-07 | ND |
| 2023-08-07 | ND |