1,1,1,2-Tetrachloroethane
Hyannis Water System
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 10 | 0 | ND |
2015 | ND | 10 | 0 | ND |
2016 | ND | 9 | 0 | ND |
2017 | ND | 7 | 0 | ND |
2018 | ND | 6 | 0 | ND |
2019 | ND | 9 | 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 | Result |
---|---|
2014-02-11 | ND |
2014-04-08 | ND |
2014-07-15 | ND |
2014-07-15 | ND |
2014-07-15 | ND |
2014-07-15 | ND |
2014-07-15 | ND |
2014-07-15 | ND |
2014-07-15 | ND |
2014-10-15 | ND |
2015-01-13 | ND |
2015-04-21 | ND |
2015-07-14 | ND |
2015-07-14 | ND |
2015-07-14 | ND |
2015-07-14 | ND |
2015-07-14 | ND |
2015-07-14 | ND |
2015-07-14 | ND |
2015-11-03 | ND |
2016-01-14 | ND |
2016-04-13 | ND |
2016-06-08 | ND |
2016-06-29 | ND |
2016-07-19 | ND |
2016-07-19 | ND |
2016-07-19 | ND |
2016-07-19 | ND |
2016-10-11 | ND |
2017-01-19 | ND |
2017-04-19 | ND |
2017-04-19 | ND |
2017-07-12 | ND |
2017-07-12 | ND |
2017-07-12 | ND |
2017-10-18 | ND |
2018-01-09 | ND |
2018-05-03 | ND |
2018-07-17 | ND |
2018-07-17 | ND |
2018-07-17 | ND |
2018-10-23 | ND |
2019-01-09 | ND |
2019-04-11 | ND |
2019-05-08 | ND |
2019-05-08 | ND |
2019-08-09 | ND |
2019-08-09 | ND |
2019-08-09 | ND |
2019-10-08 | ND |
2019-10-08 | ND |