trans-1,2-Dichloroethylene
City of Delano
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 | 11 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 8 | 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 |
---|---|---|
2014-01-14 | 5810-042-0825 | ND |
2014-04-29 | 5810-042-0745 | ND |
2014-07-01 | 5810-013-0800 | ND |
2014-07-01 | 5810-017-0830 | ND |
2014-07-01 | 5810-033-0730 | ND |
2014-07-08 | 5810-042-0949 | ND |
2014-07-08 | 5810-039-0950 | ND |
2014-07-08 | 5810-037-0830 | ND |
2014-07-08 | 5810-036-1025 | ND |
2014-07-08 | 5810-035-0900 | ND |
2014-09-02 | 5810-038-0911 | ND |
2015-03-17 | 5810-047-1030 | ND |
2015-07-21 | 5810-047-0810 | ND |
2015-09-01 | 5810-047-0830 | ND |
2015-10-27 | 5810-047-1015 | ND |
2017-07-11 | 5810-033-0950 | ND |
2017-07-11 | 5810-042-0725 | ND |
2017-07-11 | 5810-039-0835 | ND |
2017-07-11 | 5810-037-0926 | ND |
2017-07-11 | 5810-035-0950 | ND |
2017-07-18 | 5810-036-0945 | ND |
2017-09-05 | 5810-017-1000 | ND |
2017-12-05 | 5810-047-1100 | ND |