1,1,1,2-Tetrachloroethane
Crofton, City of
NOTE: Crofton, City of purchases water from Cedar-Knox Rural Water Project which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Cedar-Knox Rural Water Project.
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 | ND | 4 | 0 | ND |
2015 | ND | 4 | 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
NOTE: Crofton, City of purchases water from Cedar-Knox Rural Water Project which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Cedar-Knox Rural Water Project.
Date | Lab ID | Result |
---|---|---|
2014-01-21 | 283277 | ND |
2014-01-21 | 283275 | ND |
2014-01-21 | 283276 | ND |
2014-04-15 | 294786 | ND |
2014-04-15 | 294787 | ND |
2014-04-15 | 294788 | ND |
2014-07-07 | 309729 | ND |
2014-07-14 | 311929 | ND |
2014-07-14 | 311930 | ND |
2014-07-14 | 311931 | ND |
2014-10-14 | 330676 | ND |
2014-10-14 | 330675 | ND |
2014-10-14 | 330677 | ND |
2015-01-12 | 344873 | ND |
2015-04-13 | 357508 | ND |
2015-07-14 | 374507 | ND |
2015-08-04 | 381428 | ND |
2015-10-13 | 393510 | ND |
2016-01-11 | ND | |
2016-04-11 | ND | |
2016-07-11 | ND | |
2016-07-25 | ND | |
2016-10-12 | ND | |
2017-01-23 | ND | |
2017-04-10 | ND | |
2017-07-11 | ND | |
2017-07-17 | ND | |
2017-10-10 | ND | |
2018-01-09 | 532167 | ND |
2018-04-09 | 543814 | ND |
2018-07-10 | 561733 | ND |
2018-07-23 | 560148 | ND |
2018-10-10 | 578338 | ND |
2019-01-14 | 590611 | ND |
2019-04-08 | 600529 | ND |
2019-07-08 | 621229 | ND |
2019-07-08 | 622413 | ND |
2019-10-15 | 638237 | ND |