1,1,1,2-Tetrachloroethane
Westchester County Water District #1
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 1 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-12-01 | AQ24568POC | ND |
2016-09-06 | AG19152 POC WD#1 | ND |
2016-09-06 | AS19150 POC WD#1 | ND |
2017-11-13 | AT23822POCS | ND |
2017-11-13 | AT23824POCS | ND |
2018-09-24 | AU20757WD1 POCS | ND |
2018-09-24 | AU20758WD1 POCS | ND |
2019-11-12 | AV23849D POCS | ND |
2019-11-12 | AV23850D POCS | ND |