trans-1,2-Dichloroethylene
Kingston Town Water Utilities
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 | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-12-03 | EN2014-00006590 | ND |
| 2015-11-04 | EN2015-00005625 | ND |
| 2016-03-07 | EN2016-00000953 | ND |
| 2016-06-20 | EN2016-00002906 | ND |
| 2016-11-03 | EN2016-00005869 | ND |
| 2016-12-11 | EN2016-00006482 | ND |
| 2017-10-17 | EN2017-00006243 | ND |
| 2018-12-12 | EN2018-00006314 | ND |
| 2019-10-02 | 201910040231 | ND |
| 2019-11-19 | 201911220500 | ND |