1,1,1-Trichloroethane
St. Louis City
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.
11
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-05-28 | AC26114 | ND |
| 2014-05-28 | AC26115 | ND |
| 2015-06-01 | AC47390 | ND |
| 2015-06-01 | AC47391 | ND |
| 2016-06-06 | AC75867 | ND |
| 2016-06-06 | AC75866 | ND |
| 2016-06-06 | AC77510 | ND |
| 2018-11-06 | CRCW110618M524 | ND |
| 2018-11-06 | HBCB110618M524 | ND |
| 2019-11-18 | CRCW111819M524 | ND |
| 2019-11-18 | HBCB111819M524 | ND |