1,1,1,2-Tetrachloroethane
Montgomery County Municipal Utility District 89
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 |
|---|---|---|---|---|
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-11-17 | AC72251 | ND |
| 2014-11-17 | AC72253 | ND |
| 2015-06-08 | AC94944 | ND |
| 2015-06-08 | AC94946 | ND |
| 2016-12-06 | AD60648 | ND |
| 2016-12-06 | AD60662 | ND |
| 2017-05-09 | AD83367 | ND |
| 2017-09-07 | AD95194 | ND |
| 2018-07-25 | AE34540 | ND |
| 2018-07-25 | AE34534 | ND |
| 2019-11-21 | AE90176 | ND |
| 2019-11-21 | AE90174 | ND |