1,1,1-Trichloroethane
Pittsburgh Water & Sewer Authority
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.
12
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 | 2 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 2 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-02 | 18E0265-01 | ND |
| 2019-05-21 | 19E2494-01 | ND |
| 2019-12-13 | 19L1687-01 | ND |
| 2020-02-05 | 21752615.00 | ND |
| 2020-05-05 | 22310202.00 | ND |
| 2020-10-23 | 23270642.00 | ND |
| 2021-02-02 | 23970444.00 | ND |
| 2021-06-10 | 24731881.00 | ND |
| 2021-06-10 | 24731882.00 | ND |
| 2022-05-03 | 26743772.00 | ND |
| 2022-05-03 | 26743773.00 | ND |
| 2023-05-18 | 29001701.00 | ND |