1,1-Dichloroethylene
Pennsylvania American Water Company - Hershey
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
11
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 | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-04 | 38148701 | ND |
| 2019-01-17 | 42486001 | ND |
| 2019-07-22 | 45996201 | ND |
| 2020-02-10 | 21794492.00 | ND |
| 2020-03-04 | 21973217.00 | ND |
| 2021-01-05 | 23840020.00 | ND |
| 2021-01-06 | 23840041.00 | ND |
| 2022-01-25 | 26070915.00 | ND |
| 2022-02-10 | 26241225.00 | ND |
| 2023-01-16 | 28300873.00 | ND |
| 2023-01-16 | 28300892.00 | ND |