1,1-Dichloroethylene
Mt. Joy Boro Authority
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
12
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2019-08-20 | 9083654-01 | ND |
| 2019-11-07 | 9110611-01 | ND |
| 2020-02-20 | 21802863.00 | ND |
| 2020-02-20 | 21981375.00 | ND |
| 2020-02-28 | 21981399.00 | ND |
| 2020-03-03 | 21981322.00 | ND |
| 2020-04-09 | 22171138.00 | ND |
| 2021-01-19 | 23849103.00 | ND |
| 2022-06-07 | 26995875.00 | ND |
| 2023-05-15 | 29059238.00 | ND |
| 2023-05-16 | 29059239.00 | ND |
| 2023-06-04 | 29260271.00 | ND |