1,1,1,2-Tetrachloroethane
Green Valley SUD
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2015-04-15 | AC88408 | ND |
| 2015-04-15 | AC88396 | ND |
| 2015-07-22 | AD00642 | ND |
| 2016-01-20 | AD18974 | ND |
| 2016-04-06 | AD32077 | ND |
| 2016-06-07 | AD39632 | ND |
| 2016-09-16 | AD50153 | ND |
| 2017-01-30 | AD67581 | ND |
| 2017-04-20 | AD80390 | ND |
| 2018-01-26 | AE11022 | ND |
| 2018-04-18 | AE23016 | ND |
| 2018-04-18 | AE23018 | ND |
| 2019-02-05 | AE52955 | ND |
| 2019-02-05 | AE52927 | ND |