trans-1,2-Dichloroethylene
Frankfort
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 | 4 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 6 | 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 |
|---|---|---|
| 2014-01-21 | 1401940-001A | ND |
| 2014-01-21 | 1401940-003A | ND |
| 2014-01-21 | 1401940-005A | ND |
| 2014-04-01 | 1404041-001A | ND |
| 2015-10-13 | 1510B00-003A | ND |
| 2016-02-23 | 1602E92-001A | ND |
| 2016-04-18 | 1604D37-001A | ND |
| 2016-08-16 | 1608E44-001A | ND |
| 2016-10-17 | 1610D08-001A | ND |
| 2017-01-17 | 1701902-001A | ND |
| 2017-04-18 | 1704C14-001A | ND |
| 2017-12-04 | 1712297-001A | ND |
| 2018-07-16 | 1807A91-001A | ND |
| 2018-07-31 | 18H0064-01_02 | ND |
| 2018-07-31 | 18H0064-02_02 | ND |
| 2018-08-13 | 1808C23-001A | ND |
| 2018-08-13 | 1808C23-003A | ND |
| 2018-11-28 | 1811J68-001A | ND |
| 2019-10-15 | 1910C34-001A | ND |