1,1-Dichloroethylene
South Middleton Twp Water Authority
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
33
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 9 | 0 | ND |
| 2022 | ND | 9 | 0 | ND |
| 2023 | ND | 6 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-15 | 8052993-01 | ND |
| 2018-05-15 | 8052993-02 | ND |
| 2018-05-15 | 8052993-03 | ND |
| 2019-05-14 | 9052836-02 | ND |
| 2019-05-14 | 9052836-03 | ND |
| 2019-05-14 | 9052836-01 | ND |
| 2020-05-14 | 22355422.00 | ND |
| 2020-05-14 | 22355401.00 | ND |
| 2020-05-14 | 22355380.00 | ND |
| 2021-02-17 | 24007055.00 | ND |
| 2021-02-17 | 24007007.00 | ND |
| 2021-02-17 | 24007031.00 | ND |
| 2021-05-18 | 24579634.00 | ND |
| 2021-05-18 | 24579683.00 | ND |
| 2021-05-18 | 24579659.00 | ND |
| 2021-08-17 | 25164851.00 | ND |
| 2021-08-17 | 25164900.00 | ND |
| 2021-08-17 | 25164876.00 | ND |
| 2022-05-17 | 26788401.00 | ND |
| 2022-05-17 | 26788450.00 | ND |
| 2022-05-17 | 26788426.00 | ND |
| 2022-08-23 | 27587391.00 | ND |
| 2022-08-23 | 27587392.00 | ND |
| 2022-08-23 | 27587390.00 | ND |
| 2022-11-16 | 27948228.00 | ND |
| 2022-11-16 | 27948252.00 | ND |
| 2022-11-16 | 27948203.00 | ND |
| 2023-03-30 | 28650585.00 | ND |
| 2023-03-30 | 28650634.00 | ND |
| 2023-03-30 | 28650610.00 | ND |
| 2023-05-25 | 29247745.00 | ND |
| 2023-05-25 | 29247744.00 | ND |
| 2023-05-25 | 29247743.00 | ND |