1,1-Dichloroethylene
Granton Waterworks
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
9
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 | 4 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-12 | 1044565 | ND |
| 2018-05-01 | 1052816 | ND |
| 2018-08-06 | 1071715 | ND |
| 2018-10-08 | 1085746 | ND |
| 2019-01-08 | 1100095 | ND |
| 2020-01-28 | 1171151 | ND |
| 2020-01-28 | 1171157 | ND |
| 2023-05-23 | CB05432-03 | ND |
| 2023-06-21 | CB06958-01 | ND |