1,1,1,2-Tetrachloroethane
City of Bandera
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
18
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 | 4 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 5 | 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 |
|---|---|---|
| 2014-05-01 | AC52597 | ND |
| 2014-05-01 | AC52591 | ND |
| 2015-01-14 | AC76215 | ND |
| 2015-01-14 | AC76205 | ND |
| 2015-01-14 | AC76231 | ND |
| 2015-05-26 | AC93276 | ND |
| 2016-01-21 | AD19277 | ND |
| 2016-02-08 | AD22471 | ND |
| 2017-06-28 | AD88048 | ND |
| 2017-06-28 | AD88044 | ND |
| 2018-02-15 | AE14143 | ND |
| 2018-02-15 | AE14111 | ND |
| 2018-05-30 | AE28057 | ND |
| 2018-09-18 | AE40785 | ND |
| 2018-10-31 | AE45056 | ND |
| 2019-01-10 | AE49333 | ND |
| 2019-01-10 | AE49323 | ND |
| 2019-01-10 | AE49329 | ND |