cis-1,2-Dichloroethylene
Grangeville Water Department
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.
13
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 | 5 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 1 | 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 |
|---|---|---|
| 2018-10-23 | V181024032-001 | ND |
| 2019-11-05 | V191106027-004 | ND |
| 2019-11-05 | V191106056-006 | ND |
| 2019-11-19 | V191119041-001 | ND |
| 2019-11-19 | V191119041-003 | ND |
| 2019-12-03 | V191203062-001 | ND |
| 2020-01-28 | V200129023-001 | ND |
| 2020-02-11 | V200212049-001 | ND |
| 2020-05-26 | VMAE0634-01 | ND |
| 2020-08-25 | VMAH0673-01 | ND |
| 2021-12-21 | VMBL0705-05 | ND |
| 2022-12-20 | VMCL0632-05 | ND |
| 2023-12-12 | VMDL0406-02 | ND |