1,1,1,2-Tetrachloroethane
City of San Juan Capistrano
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 | 1 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 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 |
---|---|---|
2014-12-23 | 9590-010-1508 | ND |
2015-02-10 | 9590-010-1111 | ND |
2015-05-19 | 9590-010-0808 | ND |
2015-08-24 | 9590-010-0911 | ND |
2016-02-29 | 9590-010-0809 | ND |
2017-02-08 | 9590-010-0815 | ND |
2018-06-13 | 9590-010-1322 | ND |