1,1,1,2-Tetrachloroethane
City of Spokane
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
22
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 | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 10 | 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 |
|---|---|---|
| 2014-01-28 | 94180 | ND |
| 2014-07-29 | 00948 | ND |
| 2015-01-27 | 56691 | ND |
| 2015-01-27 | 56690 | ND |
| 2015-07-28 | 63242 | ND |
| 2016-07-26 | ND | |
| 2016-07-26 | ND | |
| 2017-05-31 | ND | |
| 2017-07-25 | ND | |
| 2018-01-30 | ND | |
| 2018-01-30 | ND | |
| 2018-07-17 | ND | |
| 2019-07-23 | ND | |
| 2019-07-23 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND |