1,1-Dichloroethylene
Lehigh County Authority Allentown Division
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
21
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-03-13 | 8023741-01 | ND |
| 2018-03-13 | 8023741-02 | ND |
| 2019-03-19 | 9024667-02 | ND |
| 2019-03-19 | 9024667-01 | ND |
| 2020-03-04 | 21896273.00 | ND |
| 2020-03-11 | 21896296.00 | ND |
| 2020-03-18 | 21896340.00 | ND |
| 2020-03-18 | 21896308.00 | ND |
| 2021-01-06 | 23762416.00 | ND |
| 2021-01-13 | 23762439.00 | ND |
| 2021-01-20 | 23762462.00 | ND |
| 2021-01-20 | 23762485.00 | ND |
| 2022-01-10 | 25992206.00 | ND |
| 2022-01-19 | 25992227.00 | ND |
| 2022-01-25 | 25992250.00 | ND |
| 2022-01-25 | 25992271.00 | ND |
| 2023-01-04 | 28221624.00 | ND |
| 2023-01-09 | 28221647.00 | ND |
| 2023-01-18 | 28221670.00 | ND |
| 2023-01-18 | 28221693.00 | ND |
| 2023-02-22 | 28396013.00 | ND |