1,1,1-Trichloroethane
Monona Waterworks
1,1,1-Trichloroethane is a solvent and a degreasing agent used for manufacturing metal products and as ingredient in cleaners and aerosols. Exposure to 1,1,1-trichloroethane can harm the nervous system, liver and circulatory system.
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 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 200 ppb
The legal limit for 1,1,1-trichloroethane, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-11 | 393604001 | ND |
| 2018-09-25 | 410134001 | ND |
| 2019-04-24 | 442084001 | ND |
| 2019-09-05 | 467810001 | ND |
| 2020-07-20 | 515426001 | ND |
| 2021-02-11 | 547362001 | ND |
| 2021-02-11 | 547362002 | ND |
| 2021-02-11 | 547362001 | ND |
| 2021-02-11 | 547362002 | ND |
| 2021-09-17 | 584334001 | ND |
| 2022-03-22 | 610616001 | ND |
| 2022-03-23 | 610869001 | ND |
| 2022-09-13 | 642092001 | ND |
| 2023-03-17 | 668942001 | ND |
| 2023-03-21 | 669257001 | ND |
| 2023-03-21 | 669257002 | ND |
| 2023-07-11 | 687958001 | ND |