1,1,1,2-Tetrachloroethane
Ossining Water Department
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 | N/A | 0 | 0 | N/A |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-06-05 | 420785211POC | ND |
| 2014-06-05 | 420785212POC | ND |
| 2016-01-07 | 420-99356-1POCS | ND |
| 2016-01-07 | 420-99356-2 | ND |
| 2017-04-03 | 420-118816-1POC | ND |
| 2018-04-02 | 420-134806-2POCS | ND |
| 2018-04-02 | 420-139806-1POCS | ND |
| 2018-04-02 | 420-134806-1POCS | ND |
| 2018-11-05 | 420-145045-8POCS | ND |
| 2019-04-02 | 420-134806-2POCS | ND |
| 2019-04-02 | 420-134806-1POCS | ND |
| 2019-11-12 | AV23851POCS | ND |