1,1,1-Trichloroethane
City of Houston Willow Chase
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.
20
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2015-05-29 | AC93893 | ND |
| 2015-05-29 | AC93899 | ND |
| 2015-05-29 | AC93891 | ND |
| 2015-05-29 | AC93875 | ND |
| 2016-03-03 | AD26935 | ND |
| 2016-03-03 | AD26933 | ND |
| 2016-03-03 | AD26925 | ND |
| 2016-03-03 | AD26929 | ND |
| 2017-03-02 | AD73126 | ND |
| 2017-03-02 | AD73122 | ND |
| 2017-05-31 | AD86149 | ND |
| 2017-05-31 | AD86147 | ND |
| 2018-04-11 | AE22081 | ND |
| 2018-04-11 | AE22085 | ND |
| 2018-04-11 | AE22055 | ND |
| 2018-04-11 | AE22057 | ND |
| 2019-02-28 | AE56578 | ND |
| 2019-02-28 | AE56614 | ND |
| 2019-02-28 | AE56582 | ND |
| 2019-02-28 | AE56580 | ND |