1,1,1,2-Tetrachloroethane
Manchester Water District
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 | 6 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2015-04-20 | 01109 | ND |
2015-04-28 | 01211 | ND |
2015-07-14 | 02942 | ND |
2015-07-14 | 02941 | ND |
2015-08-18 | 04135 | ND |
2015-10-19 | 05949 | ND |
2016-02-18 | ND | |
2016-05-16 | ND | |
2016-07-18 | ND | |
2016-11-08 | ND | |
2016-12-29 | ND | |
2017-03-28 | ND | |
2018-10-02 | ND |