1,1,1-Trichloroethane
Shady Acres Custer County
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.
16
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 |
|---|---|---|---|---|
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-03-10 | 038695.001 | ND |
| 2014-06-23 | 042214.002 | ND |
| 2014-07-28 | 045609.001 | ND |
| 2014-11-18 | 049100.001 | ND |
| 2015-03-23 | 052218.001 | ND |
| 2015-07-29 | 059247.001 | ND |
| 2015-11-16 | 063870.002 | ND |
| 2016-03-21 | SDWA-1015074-00 | ND |
| 2016-06-28 | SDWA-1038330-00 | ND |
| 2016-12-12 | SDWA-1106643-00 | ND |
| 2017-03-27 | SDWA-1136469-00 | ND |
| 2017-06-28 | SDWA-1151394-00 | ND |
| 2017-09-26 | SDWA-1173879-00 | ND |
| 2017-12-27 | SDWA-1203883-03 | ND |
| 2018-03-27 | SDWA-1237686-00 | ND |
| 2019-03-26 | SDWA-1350512-00 | ND |