1,1,1,2-Tetrachloroethane
City of Denison
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
10
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-02-25 | Q1406059008 | ND |
| 2014-02-25 | Q1406059012 | ND |
| 2015-03-03 | Q1507894007 | ND |
| 2015-06-15 | Q1522052001 | ND |
| 2016-02-16 | Q1606768002 | ND |
| 2016-02-16 | Q1606768003 | ND |
| 2017-02-07 | Q1705466002 | ND |
| 2017-08-08 | Q1733790002 | ND |
| 2018-03-13 | Q1810518005 | ND |
| 2019-03-04 | Q1909364003 | ND |