cis-1,2-Dichloroethylene
Perquimans County Water System
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.
12
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 | 1 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-05-09 | 8024-050918-E02V | ND |
| 2019-04-03 | 8024-040319-E01V | ND |
| 2019-08-21 | 8024-082119-E01V | ND |
| 2019-10-15 | 8024-101519-E01V | ND |
| 2020-01-08 | 8024-010820-E01V | ND |
| 2020-04-01 | 8024-040120-E01V | ND |
| 2020-07-28 | 8024-072820-E01V | ND |
| 2020-10-06 | 8024-100620-E01V | ND |
| 2021-01-12 | 8024-011221-E01V | ND |
| 2021-05-12 | 8024-051221-E02V | ND |
| 2022-01-12 | 8024-011222-E01V | ND |
| 2023-01-11 | 8024-011123-E01V | ND |