cis-1,2-Dichloroethylene
City of West
NOTE: City of West purchases water from City of Waco which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by City of Waco.
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.
Samples
Samples exceeding legal limit (MCL)
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 | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 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
NOTE: City of West purchases water from City of Waco which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by City of Waco.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-19 | AE33959 | ND |
| 2018-07-19 | AE33981 | ND |
| 2019-07-23 | AE75565 | ND |
| 2019-07-23 | AE75567 | ND |
| 2020-02-05 | AE97085 | ND |
| 2020-08-04 | AF21834 | ND |
| 2020-08-04 | AF21836 | ND |
| 2021-07-21 | AF62957 | ND |
| 2021-07-21 | AF62959 | ND |
| 2022-07-06 | AG03334 | ND |
| 2022-07-06 | AG03338 | ND |
| 2023-08-02 | AG51088 | ND |
| 2023-08-02 | AG51114 | ND |