1,1,1,2-Tetrachloroethane
Tri County Special Utility 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 | 4 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2015-03-18 | AC85077 | ND |
2015-03-18 | AC85055 | ND |
2015-03-18 | AC85057 | ND |
2015-09-21 | AD07836 | ND |
2015-09-21 | AD07848 | ND |
2015-12-02 | AD15216 | ND |
2016-03-02 | AD26634 | ND |
2016-03-02 | AD26658 | ND |
2016-03-02 | AD26636 | ND |
2016-06-01 | AD39005 | ND |
2017-02-15 | Q1706685001 | ND |
2017-02-15 | Q1706685016 | ND |
2017-02-15 | Q1706685014 | ND |
2017-08-15 | Q1735502005 | ND |
2018-02-13 | Q1806042014 | ND |
2018-02-13 | Q1806042012 | ND |
2018-02-13 | Q1806042010 | ND |
2018-05-10 | Q1819253005 | ND |
2019-05-30 | Q1930040001 | ND |
2019-05-30 | Q1930040007 | ND |
2019-05-30 | Q1930040005 | ND |
2019-05-30 | Q1930040003 | ND |