cis-1,2-Dichloroethylene
Oakboro, Town of
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.
8
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 | 1.10 ppb | 1 | 1 | 1.10 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | 1.10 ppb | 1 | 1 | 1.10 ppb |
| 2021 | 1.60 ppb | 1 | 1 | 1.60 ppb |
| 2022 | 0.875 ppb | 4 | 2 | ND - 2.10 ppb |
| 2023 | 1.50 ppb | 1 | 1 | 1.50 ppb |
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 |
|---|---|---|
| 2018-03-07 | 47802-01 | 1.10 ppb |
| 2020-01-31 | 78216-01 | 1.10 ppb |
| 2021-02-10 | 92521519001_12710 | 1.60 ppb |
| 2022-03-02 | 92591813001_12710 | 1.40 ppb |
| 2022-06-10 | 92610490001_12710 | 2.10 ppb |
| 2022-09-07 | 2092963-01 | ND |
| 2022-12-07 | 2123593-01 | ND |
| 2023-03-01 | 37729_23-11012 | 1.50 ppb |