1,1,1-Trichloroethane
West Harris County Municipal Utility District 11
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 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 |
---|---|---|
2014-01-22 | AC39817 | ND |
2014-12-30 | AC75950 | ND |
2015-06-11 | AC95644 | ND |
2015-06-11 | AC95674 | ND |
2016-02-29 | AD26095 | ND |
2016-02-29 | AD26099 | ND |
2017-02-08 | AD69640 | ND |
2017-02-08 | AD69604 | ND |
2018-01-29 | AE10992 | ND |
2019-02-20 | AE55057 | ND |