1,1,1,2-Tetrachloroethane
Lake Forest Water Coop
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2015-09-16 | 217929002 | ND |
| 2015-09-16 | 217929001 | ND |
| 2018-06-04 | 385684001 | ND |
| 2018-06-04 | 385683001 | ND |
| 2018-11-28 | 421495002 | ND |
| 2018-11-28 | 421495001 | ND |
| 2019-03-19 | 435960002 | ND |
| 2019-03-19 | 435960001 | ND |
| 2019-06-06 | 450162002 | ND |
| 2019-06-06 | 450162001 | ND |
| 2019-09-16 | 470008002 | ND |
| 2019-09-16 | 470008001 | ND |