1,1,1,2-Tetrachloroethane
City of Nacogdoches
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
11
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 | 1 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 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 |
|---|---|---|
| 2014-09-18 | Q1445817006 | ND |
| 2015-03-13 | Q1509587008 | ND |
| 2015-08-12 | Q1531877006 | ND |
| 2016-02-23 | Q1607697004 | ND |
| 2016-09-08 | Q1636320002 | ND |
| 2017-08-01 | Q1731839002 | ND |
| 2017-10-25 | Q1754902012 | ND |
| 2018-04-18 | Q1815997004 | ND |
| 2018-07-26 | Q1829792002 | ND |
| 2019-01-17 | Q1902680010 | ND |
| 2019-08-06 | Q1951518001 | ND |