1,1-Dichloroethylene
Yak Co. - Crewport
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
17
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 | 1.37 ppb | 7 | 5 | ND - 2.33 ppb |
| 2019 | 0.863 ppb | 4 | 2 | ND - 2.40 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 1.44 ppb | 2 | 2 | 0.510 ppb - 2.37 ppb |
| 2022 | 1.66 ppb | 2 | 1 | ND - 3.32 ppb |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-02-20 | 1.40 ppb | |
| 2018-04-09 | 2.10 ppb | |
| 2018-05-08 | 2.33 ppb | |
| 2018-08-14 | ND | |
| 2018-08-14 | ND | |
| 2018-11-13 | 1.74 ppb | |
| 2018-11-13 | 2.05 ppb | |
| 2019-03-18 | ND | |
| 2019-03-18 | ND | |
| 2019-05-20 | 1.05 ppb | |
| 2019-06-13 | 2.40 ppb | |
| 2021-05-10 | 4114924 | 2.37 ppb |
| 2021-05-10 | 4114925 | 0.510 ppb |
| 2022-05-09 | 4285652 | ND |
| 2022-05-09 | 4285645 | 3.32 ppb |
| 2023-05-15 | 4455758 | ND |
| 2023-05-15 | 4455759 | ND |