1,1,1,2-Tetrachloroethane
Lackland Air Force Base
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
23
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 | 1 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 5 | 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
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 |
|---|---|---|
| 2014-04-09 | AC49947 | ND |
| 2015-02-27 | AC82352 | ND |
| 2015-02-27 | AC82364 | ND |
| 2015-02-27 | AC82358 | ND |
| 2015-02-27 | AC82360 | ND |
| 2016-03-08 | AD27603 | ND |
| 2016-03-08 | AD27611 | ND |
| 2016-03-08 | AD27601 | ND |
| 2016-03-08 | AD27605 | ND |
| 2016-12-12 | AD61662 | ND |
| 2017-03-02 | AD73142 | ND |
| 2017-03-02 | AD73180 | ND |
| 2017-03-02 | AD73134 | ND |
| 2017-03-02 | AD73166 | ND |
| 2017-12-08 | AE07431 | ND |
| 2018-04-11 | AE22091 | ND |
| 2018-04-11 | AE22075 | ND |
| 2018-04-11 | AE22071 | ND |
| 2018-04-11 | AE22073 | ND |
| 2019-01-25 | AE51666 | ND |
| 2019-04-11 | AE62078 | ND |
| 2019-04-11 | AE62080 | ND |
| 2019-04-11 | AE62076 | ND |