1,1,1,2-Tetrachloroethane
City of Columbia
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 | ND | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-01-15 | AD34535 | ND |
| 2014-01-15 | AD34536 | ND |
| 2015-01-15 | AD50347 | ND |
| 2015-01-15 | AD50348 | ND |
| 2016-01-13 | AD69192 | ND |
| 2016-01-13 | AD69191 | ND |
| 2017-03-07 | AD90717 | ND |
| 2017-08-02 | AD98392 | ND |
| 2018-03-12 | AE09073 | ND |
| 2018-07-16 | AE15003 | ND |
| 2019-01-08 | AE23570 | ND |
| 2019-07-16 | AE33661 | ND |