1,1,1,2-Tetrachloroethane
Roxbury Water Company
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 | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 5 | 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 |
---|---|---|
2014-01-16 | L4861829-3 | ND |
2014-01-16 | L4861829-4 | ND |
2014-01-16 | L4861829-5 | ND |
2014-01-16 | L4861829-1 | ND |
2014-01-16 | L4861829-6 | ND |
2014-04-10 | L1664237-3 | ND |
2014-04-10 | L1664237-2 | ND |
2014-04-10 | L1664237-4 | ND |
2014-04-10 | L1664237-1 | ND |
2014-04-10 | L1664237-5 | ND |
2015-01-22 | L5417699-1 | ND |
2016-01-07 | L6008973-1 | ND |
2017-01-05 | L6597239-1 | ND |
2017-01-05 | L6597239-2 | ND |
2017-01-05 | L6597239-5 | ND |
2017-01-05 | L6597239-4 | ND |
2017-01-05 | L6597239-3 | ND |
2018-01-11 | L6949245-1 | ND |