1,1,1-Trichloroethane
Hca Roan Filter Plant
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.
14
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-10-30 | 8111439-01 | ND |
| 2019-10-24 | 9105284-01 | ND |
| 2020-06-17 | 22436158.00 | ND |
| 2020-10-19 | 23201739.00 | ND |
| 2021-01-07 | 23731039.00 | ND |
| 2021-04-08 | 24266644.00 | ND |
| 2021-07-01 | 24848287.00 | ND |
| 2021-10-20 | 25424857.00 | ND |
| 2022-05-26 | 26669377.00 | ND |
| 2023-02-28 | 28541392.00 | ND |
| 2023-05-02 | 28921502.00 | ND |
| 2023-05-24 | 28921761.00 | ND |
| 2023-08-22 | 29719419.00 | ND |
| 2023-11-14 | 30089985.00 | ND |