1,1,1,2-Tetrachloroethane
De Pere Water Department
NOTE: De Pere Water Department purchases water from Central Brown Co. Water Authority which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Central Brown Co. Water Authority.
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 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
NOTE: De Pere Water Department purchases water from Central Brown Co. Water Authority which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Central Brown Co. Water Authority.
| Date | Lab ID | Result |
|---|