1,1,1,2-Tetrachloroethane
Clear Creek Forest Section 12
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 | ND | 1 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 3 | 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 |
|---|---|---|
| 2014-07-23 | AC60692 | ND |
| 2015-10-16 | AD11044 | ND |
| 2015-10-16 | AD11048 | ND |
| 2016-03-30 | AD31192 | ND |
| 2016-03-30 | AD31186 | ND |
| 2016-06-15 | AD40758 | ND |
| 2017-09-26 | AD98045 | ND |
| 2017-09-26 | AD98043 | ND |
| 2018-04-02 | AE20873 | ND |
| 2018-04-02 | AE20867 | ND |
| 2019-11-07 | AE88947 | ND |
| 2019-11-07 | AE88941 | ND |