1,1-Dichloroethylene
Bets Water System
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
4
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 | 3.30 ppb | 1 | 1 | 3.30 ppb |
| 2019 | 3.00 ppb | 1 | 1 | 3.00 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 3.55 ppb | 2 | 2 | 1.60 ppb - 5.50 ppb |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-10-15 | 3.30 ppb | |
| 2019-10-29 | 3.00 ppb | |
| 2022-03-08 | 4253983 | 5.50 ppb |
| 2022-11-09 | 4378343 | 1.60 ppb |