1,1-Dichloroethylene
Tarentum Borough Water Department
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
7
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 | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 0.300 ppb | 2 | 1 | ND - 0.600 ppb |
| 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 |
|---|---|---|
| 2018-11-15 | 18K1486-01 | ND |
| 2019-09-26 | 19I2837-01 | ND |
| 2020-08-11 | 22899409.00 | ND |
| 2021-06-14 | 24735479.00 | 0.600 ppb |
| 2021-11-16 | 25676352.00 | ND |
| 2022-05-24 | 26747878.00 | ND |
| 2023-02-21 | 28435035.00 | ND |