trans-1,2-Dichloroethylene
Elizabethtown Area Water
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 | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 10 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-05-27 | 14030790-02 | ND |
| 2014-05-27 | 14032966-03 | ND |
| 2014-05-27 | 14032966-04 | ND |
| 2014-05-27 | 14030790-05 | ND |
| 2014-05-27 | 14030790-06 | ND |
| 2014-05-27 | 14032966-01 | ND |
| 2015-06-23 | 12985766 | ND |
| 2015-06-23 | 12985789 | ND |
| 2015-06-23 | 12985812 | ND |
| 2016-09-02 | 15043148 | ND |
| 2016-09-02 | 15043149 | ND |
| 2016-09-02 | 15042890 | ND |
| 2017-02-03 | 15762169 | ND |
| 2017-05-05 | 16692340 | ND |
| 2017-05-05 | 16221816 | ND |
| 2017-05-05 | 16221725 | ND |
| 2017-05-05 | 16221748 | ND |
| 2017-05-05 | 16221772 | ND |
| 2017-05-05 | 16221795 | ND |
| 2017-09-22 | 16847575 | ND |
| 2017-09-22 | 16993154 | ND |
| 2017-12-04 | 17271053 | ND |
| 2018-04-23 | 8044341-01 | ND |
| 2018-04-23 | 8044341-02 | ND |
| 2018-04-23 | 8044341-03 | ND |
| 2019-06-10 | 9045803-01 | ND |
| 2019-06-10 | 9045803-02RE | ND |
| 2019-06-10 | 9045803-03 | ND |