1,1-Dichloroethylene
Westwood Shores Municipal Utility District
NOTE: Westwood Shores Municipal Utility District purchases water from Trinity Rural Water Supply Corporation 1 which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by Trinity Rural Water Supply Corporation 1.
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
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 | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
NOTE: Westwood Shores Municipal Utility District purchases water from Trinity Rural Water Supply Corporation 1 which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by Trinity Rural Water Supply Corporation 1.
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-14 | Q1806541002 | ND |
| 2019-03-14 | Q1910847006 | ND |
| 2020-11-03 | Q2042584001 | ND |
| 2021-02-11 | Q2104195003 | ND |
| 2022-03-02 | Q2207194004 | ND |
| 2023-02-08 | Q2304961007 | ND |