trans-1,2-Dichloroethylene
Falfurrias Utility Board
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2015-03-09 | AC83215 | ND |
| 2015-05-12 | AC91640 | ND |
| 2015-05-12 | AC91658 | ND |
| 2015-10-19 | AD11022 | ND |
| 2015-10-19 | AD11020 | ND |
| 2016-01-25 | AD19763 | ND |
| 2016-03-22 | AD29907 | ND |
| 2016-04-25 | AD33965 | ND |
| 2016-07-11 | AD43627 | ND |
| 2016-12-14 | AD62207 | ND |
| 2017-01-09 | AD63577 | ND |
| 2017-01-09 | AD63613 | ND |
| 2017-01-09 | AD63621 | ND |
| 2017-10-30 | AE02702 | ND |
| 2018-02-12 | AE13326 | ND |
| 2018-02-12 | AE13324 | ND |
| 2018-06-14 | AE30042 | ND |
| 2018-06-14 | AE30050 | ND |
| 2018-11-05 | AE45241 | ND |
| 2019-02-25 | AE55661 | ND |
| 2019-02-25 | AE55655 | ND |
| 2019-07-08 | AE73480 | ND |
| 2019-07-08 | AE73478 | ND |