1,1,1,2-Tetrachloroethane
Jim Hogg County Water Control and Improvement District 2
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
13
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 | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-06-12 | AC56698 | ND |
| 2015-03-17 | AC84707 | ND |
| 2016-02-18 | AD24333 | ND |
| 2017-02-23 | AD71751 | ND |
| 2017-06-06 | AD86663 | ND |
| 2017-06-06 | AD86661 | ND |
| 2017-09-06 | AD94943 | ND |
| 2017-12-06 | AE06992 | ND |
| 2018-03-08 | AE17537 | ND |
| 2018-03-08 | AE17543 | ND |
| 2019-03-05 | AE57134 | ND |
| 2019-03-05 | AE57140 | ND |
| 2019-03-05 | AE57152 | ND |