1,1,1,2-Tetrachloroethane
TUD - Sonora/Jamestown Water System
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
8
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 5 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 3 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-02-11 | 5810-017-0940 | ND |
| 2014-08-12 | 5810-011-0925 | ND |
| 2014-08-12 | 5810-013-1006 | ND |
| 2014-08-12 | 5810-018-0855 | ND |
| 2014-08-12 | 5810-019-0911 | ND |
| 2017-08-09 | 5810-018-1118 | ND |
| 2017-08-14 | 5810-013-1111 | ND |
| 2017-08-14 | 5810-019-1051 | ND |