1,1,1,2-Tetrachloroethane
Deforest Waterworks
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
14
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 | 7 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 1 | 0 | ND |
| 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 |
|---|---|---|
| 2014-06-24 | 140959001 | ND |
| 2014-06-24 | 140960001 | ND |
| 2014-06-24 | 140958001 | ND |
| 2014-07-23 | 147208001 | ND |
| 2014-08-12 | 150736001 | ND |
| 2014-09-10 | 156235001 | ND |
| 2014-10-15 | 163748001 | ND |
| 2015-02-17 | 179800001 | ND |
| 2015-02-17 | 179800003 | ND |
| 2015-09-15 | 217481001 | ND |
| 2016-04-18 | 249026001 | ND |
| 2016-04-18 | 249027001 | ND |
| 2016-09-26 | 279964001 | ND |
| 2018-08-29 | 404007001 | ND |