1,1,1,2-Tetrachloroethane
Southwood Water System
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
25
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 | 5 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 4 | 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 |
|---|---|---|
| 2015-03-11 | 74808 | ND |
| 2015-03-11 | 74807 | ND |
| 2015-03-11 | 74806 | ND |
| 2015-03-11 | 74809 | ND |
| 2015-07-07 | 75114 | ND |
| 2016-03-11 | ND | |
| 2016-03-14 | ND | |
| 2016-04-14 | ND | |
| 2016-05-13 | ND | |
| 2017-02-22 | ND | |
| 2017-02-22 | ND | |
| 2017-02-22 | ND | |
| 2017-02-22 | ND | |
| 2017-02-22 | ND | |
| 2017-02-22 | ND | |
| 2017-02-22 | ND | |
| 2018-03-14 | ND | |
| 2018-03-14 | ND | |
| 2018-05-04 | ND | |
| 2018-07-19 | ND | |
| 2019-06-26 | ND | |
| 2019-07-12 | ND | |
| 2019-07-12 | ND | |
| 2019-09-05 | ND | |
| 2019-10-15 | ND |