1,1,1,2-Tetrachloroethane
Fort Sam Houston
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
16
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 | 1 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2015-03-23 | AC85623 | ND |
| 2016-02-25 | AD25793 | ND |
| 2016-09-28 | AD51718 | ND |
| 2016-12-15 | AD62394 | ND |
| 2017-01-30 | AD67573 | ND |
| 2017-01-30 | AD67575 | ND |
| 2017-04-24 | AD80717 | ND |
| 2017-04-24 | AD80715 | ND |
| 2017-07-07 | AD88708 | ND |
| 2017-10-10 | AE00129 | ND |
| 2018-01-18 | AE09245 | ND |
| 2018-04-20 | AE23481 | ND |
| 2018-04-20 | AE23471 | ND |
| 2019-01-24 | AE51287 | ND |
| 2019-01-24 | AE51285 | ND |
| 2019-01-24 | AE51269 | ND |