cis-1,2-Dichloroethylene
City of Shallowater
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 | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-07-11 | Q1827381001 | ND |
| 2019-07-10 | Q1943529002 | ND |
| 2020-07-29 | Q2029645004 | ND |
| 2021-08-11 | Q2121480006 | ND |
| 2021-10-20 | Q2129605004 | ND |
| 2021-10-20 | Q2129605006 | ND |
| 2022-03-15 | Q2208766004 | ND |
| 2022-06-16 | Q2216858002 | ND |
| 2022-06-16 | Q2216858004 | ND |
| 2022-08-16 | Q2224095001 | ND |
| 2022-10-25 | Q2232134001 | ND |
| 2023-04-25 | Q2315528008 | ND |
| 2023-04-25 | Q2315528010 | ND |