1,1,1,2-Tetrachloroethane
City of Atwater
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
12
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 4 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 8 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 1 ppb
The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-12 | 5806-900-0735 | ND |
| 2014-03-12 | 5806-901-0815 | ND |
| 2014-03-12 | 5806-902-0935 | ND |
| 2014-03-12 | 5806-903-0910 | ND |
| 2016-03-23 | 5806-013-0630 | ND |
| 2016-03-23 | 5806-014-0700 | ND |
| 2016-03-23 | 5806-015-0730 | ND |
| 2016-03-23 | 5806-016-0800 | ND |
| 2016-03-23 | 5806-017-0830 | ND |
| 2016-03-23 | 5806-018-0900 | ND |
| 2016-03-23 | 5806-019-0930 | ND |
| 2016-03-23 | 5806-021-1000 | ND |