1,1,1-Trichloroethane
City of Hermiston
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.
10
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 | 4 | 0 | ND |
| 2021 | ND | 1 | 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 |
|---|---|---|
| 2018-04-03 | 180403J-V | ND |
| 2019-04-11 | 904120301-V | ND |
| 2020-06-02 | 006032204-V | ND |
| 2020-06-02 | 006032201-V | ND |
| 2020-06-02 | 006032203-V | ND |
| 2020-06-02 | 006032202-V | ND |
| 2021-06-09 | 106101201-V | ND |
| 2022-06-13 | T2F1307-05-V | ND |
| 2022-11-16 | 2111725-01-V | ND |
| 2023-11-08 | T3K0806-01-V | ND |