1,1,1,2-Tetrachloroethane
Sky Lakes Water Supply Corporation
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2015-04-29 | AC89874 | ND |
| 2015-04-29 | AC89876 | ND |
| 2016-07-12 | AD43884 | ND |
| 2016-07-12 | AD43866 | ND |
| 2017-04-11 | AD79226 | ND |
| 2017-04-11 | AD79224 | ND |
| 2017-09-26 | AD98027 | ND |
| 2017-11-14 | AE04753 | ND |
| 2018-01-09 | AE08411 | ND |
| 2018-01-09 | AE08351 | ND |
| 2018-04-10 | AE21888 | ND |
| 2018-07-31 | AE35102 | ND |
| 2018-10-23 | AE44310 | ND |
| 2019-02-27 | AE56273 | ND |
| 2019-02-27 | AE56281 | ND |
| 2019-05-01 | AE64373 | ND |
| 2019-07-23 | AE75575 | ND |
| 2019-10-31 | AE88166 | ND |