1,1,1-Trichloroethane
Golden State Water Company - Cowan Heights
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.
14
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 | ND | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-02-19 | 4417-001-0940 | ND |
| 2014-02-19 | 4417-004-0925 | ND |
| 2015-02-02 | 4417-001-0830 | ND |
| 2015-02-02 | 4417-004-0850 | ND |
| 2016-01-19 | 4417-001-0835 | ND |
| 2016-01-19 | 4417-004-0850 | ND |
| 2017-01-10 | 4417-001-0925 | ND |
| 2017-01-10 | 4417-004-0940 | ND |
| 2018-01-08 | 4417-001-0930 | ND |
| 2018-01-08 | 4417-004-0905 | ND |
| 2019-03-25 | 4417-001-0855 | ND |
| 2019-03-25 | 4417-004-0840 | ND |
| 2019-04-17 | 4417-004-1000 | ND |
| 2019-04-17 | 4417-004-1005 | ND |