1,1,1,2-Tetrachloroethane
Rehoboth Beach Water Department
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 | N/A | 0 | 0 | N/A |
2015 | ND | 1 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 4 | 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 |
---|---|---|
2015-11-17 | S637349 | ND |
2016-08-30 | S694033 | ND |
2016-12-21 | S694897 | ND |
2017-08-22 | S738553 | ND |
2018-11-29 | S850881 | ND |
2018-11-29 | S850883 | ND |
2018-11-29 | S850885 | ND |
2018-12-14 | S853797 | ND |
2019-07-09 | S895563 | ND |
2019-09-23 | S909181 | ND |