trans-1,2-Dichloroethylene
Quartz Hill Water District
1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 9 | 0 | ND |
2015 | ND | 9 | 0 | ND |
2016 | ND | 9 | 0 | ND |
2017 | ND | 9 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 60 ppb
The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 100 ppb
The legal limit for trans-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-10-28 | 3761-021-0655 | ND |
2014-10-28 | 3761-018-0836 | ND |
2014-10-28 | 3761-017-0844 | ND |
2014-10-28 | 3761-016-0707 | ND |
2014-10-28 | 3761-015-0904 | ND |
2014-10-28 | 3761-012-0736 | ND |
2014-10-28 | 3761-009-0821 | ND |
2014-10-28 | 3761-006-0758 | ND |
2014-10-28 | 3761-005-0742 | ND |
2015-10-13 | 3761-017-0838 | ND |
2015-10-13 | 3761-021-0908 | ND |
2015-10-13 | 3761-018-0848 | ND |
2015-10-13 | 3761-005-0735 | ND |
2015-10-13 | 3761-016-0900 | ND |
2015-10-13 | 3761-006-0800 | ND |
2015-10-13 | 3761-015-0825 | ND |
2015-10-13 | 3761-009-0815 | ND |
2015-10-13 | 3761-012-0720 | ND |
2016-07-19 | 3761-021-0715 | ND |
2016-07-19 | 3761-005-0845 | ND |
2016-07-19 | 3761-006-0810 | ND |
2016-07-19 | 3761-009-0755 | ND |
2016-07-19 | 3761-012-0830 | ND |
2016-07-19 | 3761-018-0725 | ND |
2016-07-19 | 3761-017-0740 | ND |
2016-07-19 | 3761-016-0705 | ND |
2016-07-19 | 3761-015-0650 | ND |
2017-07-18 | 3761-018-0805 | ND |
2017-07-18 | 3761-015-0735 | ND |
2017-07-18 | 3761-021-0715 | ND |
2017-07-18 | 3761-012-0850 | ND |
2017-07-18 | 3761-009-0815 | ND |
2017-07-18 | 3761-017-0750 | ND |
2017-07-18 | 3761-006-0840 | ND |
2017-07-18 | 3761-016-0700 | ND |
2017-07-18 | 3761-005-0900 | ND |