trans-1,2-Dichloroethylene
Walnutport Authority
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 | 3 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-04-14 | 140014969 | ND |
| 2014-04-14 | 140014968 | ND |
| 2014-10-13 | 140046404 | ND |
| 2015-01-29 | 12324276 | ND |
| 2015-01-29 | 12324255 | ND |
| 2015-04-13 | 12670143 | ND |
| 2015-07-14 | 13052419 | ND |
| 2016-03-14 | 14023549 | ND |
| 2016-04-04 | 14151469 | ND |
| 2017-03-06 | 15839728 | ND |
| 2017-03-06 | 15839729 | ND |
| 2017-03-06 | 15839730 | ND |
| 2017-10-02 | 16775617 | ND |
| 2018-03-05 | 8005766-02 | ND |
| 2018-03-05 | 8005766-01 | ND |
| 2019-02-04 | 9003529-02 | ND |
| 2019-02-04 | 9003529-01 | ND |