1,1,1,2-Tetrachloroethane
Chesswood 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 |
---|---|---|---|---|
2014 | N/A | 0 | 0 | N/A |
2015 | ND | 3 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2015-04-23 | AC89420 | ND |
2015-09-10 | AD06546 | ND |
2015-11-12 | AD13410 | ND |
2016-05-16 | AD36847 | ND |
2017-03-08 | AD74009 | ND |
2018-03-29 | AE20608 | ND |
2019-02-19 | AE54856 | ND |
2019-06-13 | AE70617 | ND |