trans-1,2-Dichloroethylene
Aqua Pa Hatboro
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 | 9 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-01-07 | AE19909 | ND |
| 2014-02-04 | AE22451 | ND |
| 2014-02-04 | AE22453 | ND |
| 2014-02-04 | AE22450 | ND |
| 2014-02-21 | AE23907 | ND |
| 2014-04-08 | AE28690 | ND |
| 2014-06-17 | AE36363 | ND |
| 2014-07-24 | AE40860 | ND |
| 2014-11-19 | AE56461 | ND |
| 2015-02-03 | 12401083 | ND |
| 2015-02-03 | 12401125 | ND |
| 2015-02-03 | 12401104 | ND |
| 2015-02-03 | 12401062 | ND |
| 2015-02-03 | 12401041 | ND |
| 2015-12-15 | 13632490 | ND |
| 2016-01-19 | 13751839 | ND |
| 2016-01-19 | 13751755 | ND |
| 2016-01-19 | 13751776 | ND |
| 2016-01-19 | 13751797 | ND |
| 2016-01-19 | 13751818 | ND |
| 2017-03-28 | 15794762 | ND |
| 2017-03-28 | 15794741 | ND |
| 2017-06-20 | 16256730 | ND |
| 2017-06-20 | 16256709 | ND |
| 2017-12-13 | 17161008 | ND |
| 2018-03-14 | AF77909 | ND |
| 2018-03-14 | AF77910 | ND |
| 2018-03-14 | AF77911 | ND |
| 2018-03-14 | AF77912 | ND |
| 2018-03-14 | AF77913 | ND |
| 2019-03-13 | AG10399 | ND |
| 2019-03-13 | AG10400 | ND |
| 2019-03-13 | AG10406 | ND |
| 2019-03-13 | AG10402 | ND |
| 2019-03-20 | AG12154 | ND |