1,1,1,2-Tetrachloroethane
City of Waskom
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 5 | 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 |
|---|---|---|
| 2015-05-12 | Q1517315003 | ND |
| 2016-03-03 | Q1609178012 | ND |
| 2016-03-03 | Q1609178007 | ND |
| 2016-06-14 | Q1623922003 | ND |
| 2016-09-02 | Q1635698001 | ND |
| 2016-11-14 | Q1649298001 | ND |
| 2017-09-06 | Q1741335004 | ND |
| 2017-09-06 | Q1741335001 | ND |
| 2018-06-14 | Q1823872005 | ND |
| 2018-06-14 | Q1823872007 | ND |
| 2019-05-29 | Q1929343011 | ND |
| 2019-05-29 | Q1929343013 | ND |