trans-1,2-Dichloroethylene
Vinton
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 6 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2014-01-16 | 1401F12-01A | ND |
| 2014-07-02 | 1407333-03A-V | ND |
| 2014-07-02 | 1407333-01A-V | ND |
| 2014-07-02 | 1407333-02A-V | ND |
| 2014-07-07 | 1407616-01A-V | ND |
| 2014-09-25 | 1409U42-01A-V | ND |
| 2015-01-21 | 00281-REI CONSUL | ND |
| 2015-01-21 | 00281-REI CONSUL | ND |
| 2015-01-21 | 00281-REI CONSUL | ND |
| 2015-01-21 | 00281-REI CONSUL | ND |
| 2015-01-21 | 00281-REI CONSUL | ND |
| 2015-01-21 | 00281-REI CONSUL | ND |
| 2015-01-21 | 00281-REI CONSUL | ND |
| 2015-07-16 | 00281-REI CONSUL | ND |
| 2016-07-07 | 16070847-01A | ND |
| 2017-01-11 | 17011141-01A | ND |
| 2017-10-11 | 17101551-01A | ND |
| 2018-01-26 | 18012938-01A | ND |
| 2018-01-26 | 18012938-02A | ND |
| 2018-01-26 | 18012938-03A | ND |
| 2018-01-26 | 18012938-04A | ND |
| 2018-01-26 | 18012938-05A | ND |
| 2018-01-26 | 18012938-06A | ND |
| 2018-01-26 | 18012938-07A | ND |
| 2019-06-25 | 19063195-01A | ND |