1,1,1-Trichloroethane
City of Humble
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.
25
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2015-01-20 | AC76796 | ND |
| 2015-01-20 | AC76784 | ND |
| 2015-01-20 | AC76780 | ND |
| 2015-01-20 | AC76800 | ND |
| 2015-01-20 | AC76798 | ND |
| 2016-01-21 | AD19313 | ND |
| 2016-01-21 | AD19307 | ND |
| 2016-01-21 | AD19315 | ND |
| 2016-01-21 | AD19317 | ND |
| 2016-01-21 | AD19309 | ND |
| 2017-01-05 | AD63235 | ND |
| 2017-01-05 | AD63231 | ND |
| 2017-01-05 | AD63233 | ND |
| 2017-01-05 | AD63263 | ND |
| 2017-04-21 | AD80683 | ND |
| 2018-01-19 | AE09579 | ND |
| 2018-01-19 | AE09595 | ND |
| 2018-01-19 | AE09539 | ND |
| 2018-04-03 | AE21021 | ND |
| 2018-04-03 | AE21019 | ND |
| 2019-01-15 | AE49863 | ND |
| 2019-01-15 | AE49877 | ND |
| 2019-01-15 | AE49873 | ND |
| 2019-01-15 | AE49879 | ND |
| 2019-01-15 | AE49853 | ND |