1,1,1-Trichloroethane
St Charles Water District 1 East Bank
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.
20
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 | 8 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-01-23 | 35370117001 | ND |
| 2018-01-23 | 35370117001 | ND |
| 2019-01-22 | 35444037001 | ND |
| 2019-01-22 | 35444038001 | ND |
| 2019-01-22 | 35444037001 | ND |
| 2019-01-22 | 35444038001 | ND |
| 2019-09-05 | 35495382002 | ND |
| 2019-09-05 | 35495382001 | ND |
| 2019-09-05 | 35495382002 | ND |
| 2019-09-05 | 35495382001 | ND |
| 2020-03-05 | 35535509001 | ND |
| 2020-03-05 | 35535509002 | ND |
| 2021-01-28 | 35608065001 | ND |
| 2021-01-28 | 35608065002 | ND |
| 2021-03-10 | 35618304001 | ND |
| 2021-03-10 | 35618304002 | ND |
| 2022-02-02 | 35694868001 | ND |
| 2022-02-02 | 35694870001 | ND |
| 2023-03-20 | 35787602001 | ND |
| 2023-03-20 | 35787604001 | ND |