1,1,1-Trichloroethane
Catoosa Utility District Authority
NOTE: Catoosa Utility District Authority purchases water from Tennessee American Water which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by Tennessee American Water.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 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
NOTE: Catoosa Utility District Authority purchases water from Tennessee American Water which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by Tennessee American Water.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-15 | 02933 | ND |
| 2018-04-03 | 02933 | ND |
| 2018-07-09 | 02933 | ND |
| 2018-10-02 | 02933 | ND |
| 2019-01-07 | 02933 | ND |
| 2019-04-02 | 02933 | ND |
| 2019-07-01 | 02933 | ND |
| 2019-10-01 | 02933 | ND |
| 2020-01-06 | ND | |
| 2021-01-04 | ND | |
| 2021-07-06 | ND | |
| 2021-10-04 | ND | |
| 2022-01-03 | ND | |
| 2022-01-03 | ND | |
| 2022-01-03 | ND |