1,1-Dichloroethylene
Pennsylvania American Norristown
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
10
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 | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-04-03 | 39060301 | ND |
| 2019-04-16 | 43646101 | ND |
| 2019-10-22 | 47450201 | ND |
| 2019-11-18 | 47355101 | ND |
| 2020-02-10 | 21668817.00 | ND |
| 2020-05-12 | 22216895.00 | ND |
| 2020-08-11 | 22800786.00 | ND |
| 2021-05-05 | 24440294.00 | ND |
| 2022-05-02 | 26650183.00 | ND |
| 2023-05-08 | 28901908.00 | ND |