1,1,1,2-Tetrachloroethane
West Gregg Special Utility District
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 | ND | 1 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-07-02 | Q1425583001 | ND |
| 2015-04-29 | Q1515717015 | ND |
| 2015-04-29 | Q1515717012 | ND |
| 2015-04-29 | Q1515717011 | ND |
| 2016-10-25 | Q1645489004 | ND |
| 2016-10-25 | Q1645489017 | ND |
| 2016-10-25 | Q1645489001 | ND |
| 2016-10-25 | Q1645489014 | ND |
| 2017-08-09 | Q1734186005 | ND |
| 2017-08-09 | Q1734186003 | ND |
| 2017-08-09 | Q1734186002 | ND |
| 2018-09-13 | Q1836486004 | ND |
| 2018-09-13 | Q1836486002 | ND |
| 2018-12-05 | Q1849734003 | ND |
| 2019-02-14 | Q1906942010 | ND |
| 2019-02-14 | Q1906942006 | ND |
| 2019-03-28 | Q1912650001 | ND |
| 2019-03-28 | Q1912650003 | ND |