1,1,1-Trichloroethane
City of Katy
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | ND | 7 | 0 | ND |
2016 | ND | 8 | 0 | ND |
2017 | ND | 6 | 0 | ND |
2018 | ND | 6 | 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 |
---|---|---|
2014-07-25 | AC61114 | ND |
2015-01-20 | AC76792 | ND |
2015-01-20 | AC76782 | ND |
2015-01-20 | AC76772 | ND |
2015-01-20 | AC76776 | ND |
2015-01-20 | AC76774 | ND |
2015-05-28 | AC93617 | ND |
2015-05-28 | AC93621 | ND |
2016-01-14 | AD18225 | ND |
2016-01-14 | AD18223 | ND |
2016-01-14 | AD18231 | ND |
2016-01-14 | AD18263 | ND |
2016-01-14 | AD18229 | ND |
2016-03-15 | AD28802 | ND |
2016-07-18 | AD44547 | ND |
2016-10-07 | AD52842 | ND |
2017-02-09 | AD69958 | ND |
2017-02-09 | AD69938 | ND |
2017-02-09 | AD69952 | ND |
2017-02-09 | AD69942 | ND |
2017-02-09 | AD69940 | ND |
2017-02-09 | AD70006 | ND |
2018-01-08 | AE08054 | ND |
2018-01-08 | AE08058 | ND |
2018-01-08 | AE08056 | ND |
2018-01-08 | AE08060 | ND |
2018-01-08 | AE08062 | ND |
2018-01-08 | AE08052 | ND |
2019-01-14 | AE49623 | ND |
2019-01-14 | AE49613 | ND |
2019-01-14 | AE49629 | ND |
2019-01-14 | AE49617 | ND |
2019-01-14 | AE49615 | ND |