1,1,1-Trichloroethane
Arroyo Grande,Water Department
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.
17
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 | 1 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 8 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-03-18 | 3761-013-0930 | ND |
| 2015-05-19 | 3761-006-0827 | ND |
| 2015-05-19 | 3761-013-1015 | ND |
| 2015-05-19 | 3761-008-1035 | ND |
| 2015-05-19 | 3761-007-0830 | ND |
| 2015-05-19 | 3761-001-0912 | ND |
| 2015-05-19 | 3761-004-0855 | ND |
| 2015-05-19 | 3761-003-0922 | ND |
| 2015-05-19 | 3761-002-0915 | ND |
| 2018-05-08 | 3761-004-0818 | ND |
| 2018-05-08 | 3761-003-1010 | ND |
| 2018-05-08 | 3761-006-0910 | ND |
| 2018-05-08 | 3761-007-0930 | ND |
| 2018-05-08 | 3761-002-0850 | ND |
| 2018-05-08 | 3761-008-0940 | ND |
| 2018-05-08 | 3761-013-0850 | ND |
| 2018-05-08 | 3761-001-0950 | ND |