1,1,1-Trichloroethane
Altoona Water 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.
37
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 | 6 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 8 | 0 | ND |
| 2022 | ND | 6 | 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 |
|---|---|---|
| 2018-08-28 | 8H28046-01 | ND |
| 2018-08-28 | 8H28044-01 | ND |
| 2018-08-28 | 8H28051-01 | ND |
| 2018-08-28 | 8H28032-01 | ND |
| 2018-08-28 | 8H28031-01 | ND |
| 2018-08-28 | 8H28047-01 | ND |
| 2019-11-06 | 9K07058-01 | ND |
| 2019-11-06 | 9K07058-03 | ND |
| 2019-11-07 | 9K07074-01 | ND |
| 2019-11-07 | 9K07072-01 | ND |
| 2019-12-05 | 9L05126-01 | ND |
| 2020-02-06 | 21729178.00 | ND |
| 2020-08-05 | 22869713.00 | ND |
| 2020-08-05 | 22869712.00 | ND |
| 2020-08-05 | 22869711.00 | ND |
| 2020-08-10 | 22869924.00 | ND |
| 2020-08-10 | 22869925.00 | ND |
| 2020-08-10 | 22869923.00 | ND |
| 2021-07-01 | 24897507.00 | ND |
| 2021-07-08 | 24897528.00 | ND |
| 2021-08-10 | 25092087.00 | ND |
| 2021-08-10 | 25092033.00 | ND |
| 2021-08-10 | 25092086.00 | ND |
| 2021-08-10 | 25092034.00 | ND |
| 2021-08-10 | 25092035.00 | ND |
| 2021-12-13 | 25828704.00 | ND |
| 2022-02-24 | 26177241.00 | ND |
| 2022-08-16 | 27309603.00 | ND |
| 2022-08-16 | 27309679.00 | ND |
| 2022-08-16 | 27308844.00 | ND |
| 2022-08-16 | 27309645.00 | ND |
| 2022-11-10 | 27885526.00 | ND |
| 2023-07-26 | 29371571.00 | ND |
| 2023-07-26 | 29371528.00 | ND |
| 2023-07-26 | 29371484.00 | ND |
| 2023-07-26 | 29371550.00 | ND |
| 2023-07-26 | 29371506.00 | ND |