trans-1,2-Dichloroethylene
Upper Saucon Township Water Supply
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 | 5 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 4 | 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 |
|---|---|---|
| 2014-05-07 | 14033370-02 | ND |
| 2014-05-07 | 14033370-01 | ND |
| 2014-12-17 | 14100700-01 | ND |
| 2015-01-21 | 12322857 | ND |
| 2015-04-24 | 12924566 | ND |
| 2015-05-06 | 12790626 | ND |
| 2015-05-06 | 12790627 | ND |
| 2015-08-05 | 13172938 | ND |
| 2016-04-20 | 14149069 | ND |
| 2016-05-05 | 14298521 | ND |
| 2016-05-05 | 14298544 | ND |
| 2017-04-05 | 15986827 | ND |
| 2017-05-03 | 16144646 | ND |
| 2017-05-03 | 16144623 | ND |
| 2017-07-05 | 16459949 | ND |
| 2018-04-03 | 8041697-01 | ND |
| 2018-05-01 | 8041311-01 | ND |
| 2018-05-01 | 8041311-02 | ND |
| 2019-04-03 | 9041583-01 | ND |
| 2019-05-01 | 9041410-01 | ND |
| 2019-05-01 | 9041410-02 | ND |