1,1,1-Trichloroethane
Town of Poolesville
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.
13
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 3 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 8 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2019-07-02 | E20000017001 | ND |
| 2019-07-02 | E20000017004 | ND |
| 2019-07-02 | E20000017006 | ND |
| 2021-01-21 | E21001857001 | ND |
| 2021-01-21 | E21001857004 | ND |
| 2021-04-06 | E21002753001 | ND |
| 2021-04-06 | E21002753004 | ND |
| 2021-07-13 | E22000119001 | ND |
| 2021-08-05 | E22000416001 | ND |
| 2021-08-05 | E22000416004 | ND |
| 2021-10-05 | E2200028701 | ND |
| 2023-04-18 | E2300236508 | ND |
| 2023-04-18 | E2300236520 | ND |