1,1-Dichloroethylene
State College Boro Water Auth.
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
23
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 | 5 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 8 | 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 |
|---|---|---|
| 2018-02-14 | 8B14177-01 | ND |
| 2019-02-12 | 9B12139-01 | ND |
| 2020-02-12 | 21735629.00 | ND |
| 2020-02-12 | 21735628.00 | ND |
| 2020-02-12 | 21735627.00 | ND |
| 2020-02-12 | 21735626.00 | ND |
| 2020-02-12 | 21735625.00 | ND |
| 2021-02-16 | 23953997.00 | ND |
| 2021-04-07 | 24321971.00 | ND |
| 2021-08-16 | 25098838.00 | ND |
| 2021-09-13 | 25291241.00 | ND |
| 2021-11-15 | 25654887.00 | ND |
| 2022-02-15 | 26182287.00 | ND |
| 2022-09-01 | 27520790.00 | ND |
| 2022-11-16 | 27890867.00 | ND |
| 2023-02-14 | 28415057.00 | ND |
| 2023-05-16 | 28981578.00 | ND |
| 2023-08-14 | 29577816.00 | ND |
| 2023-11-13 | 30139899.00 | ND |
| 2023-12-20 | 30314237.00 | ND |
| 2023-12-20 | 30314300.00 | ND |
| 2023-12-20 | 30314258.00 | ND |
| 2023-12-20 | 30314279.00 | ND |