trans-1,2-Dichloroethylene
United Water Pa Mechanicsburg
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 | 9 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2014-02-12 | 1071699003 | ND |
| 2014-02-12 | 1071699001 | ND |
| 2014-04-15 | 2001635001 | ND |
| 2014-04-15 | 2001635002 | ND |
| 2014-07-07 | 2016172003 | ND |
| 2014-10-09 | 2033532001 | ND |
| 2015-02-03 | 12479189 | ND |
| 2015-02-03 | 12479144 | ND |
| 2015-05-11 | 12841441 | ND |
| 2015-05-11 | 12841464 | ND |
| 2015-07-07 | 12974658 | ND |
| 2015-07-07 | 12974679 | ND |
| 2015-10-07 | 13475183 | ND |
| 2015-10-07 | 13475162 | ND |
| 2015-10-07 | 13475206 | ND |
| 2016-01-13 | 13834606 | ND |
| 2016-01-13 | 13834583 | ND |
| 2016-01-13 | 13834627 | ND |
| 2016-04-19 | 14206404 | ND |
| 2016-08-10 | 14857577 | ND |
| 2016-08-10 | 14857598 | ND |
| 2016-11-10 | 15326809 | ND |
| 2017-02-07 | 15752206 | ND |
| 2017-02-14 | 15752250 | ND |
| 2017-05-02 | 16208292 | ND |
| 2017-08-01 | 16520099 | ND |
| 2017-10-10 | 16981636 | ND |
| 2018-02-23 | 2297488001 | ND |
| 2018-02-23 | 2297488002 | ND |
| 2018-05-01 | 1810634-01 | ND |
| 2018-08-07 | 1821380-01 | ND |
| 2018-11-12 | 3000062001 | ND |
| 2019-01-15 | H9A0708-01 | ND |
| 2019-01-15 | H9A0708-02 | ND |
| 2019-04-10 | H9D0711-01 | ND |
| 2019-08-06 | H9H0636-01 | ND |
| 2019-08-07 | H9H0668-01 | ND |
| 2019-11-05 | H9K0519-01 | ND |