1,1-Dichloroethylene
Gurdon Waterworks
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
18
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 | 6 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-01-22 | 18025000709 | ND |
| 2019-01-23 | 19024002009 | ND |
| 2019-01-23 | 19024002101 | ND |
| 2019-04-30 | 19122001708 | ND |
| 2019-08-06 | 19220001809 | ND |
| 2019-09-03 | 19248000101 | ND |
| 2019-11-18 | 19324000209 | ND |
| 2020-02-04 | 20037002001 | ND |
| 2020-02-04 | 20037002201 | ND |
| 2020-02-04 | 20037002101 | ND |
| 2021-02-09 | 21041002401 | ND |
| 2021-02-09 | 21041002108 | ND |
| 2022-01-10 | 22013000101 | ND |
| 2022-01-11 | 22013002609 | ND |
| 2022-10-03 | O202442-VOC-1 | ND |
| 2023-02-13 | O206443-VOC-1 | ND |
| 2023-02-13 | O206441-VOC-1 | ND |
| 2023-02-13 | O206442-VOC-1 | ND |