trans-1,2-Dichloroethylene
Doylestown Borough Water Department
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 5 | 0 | ND |
2015 | ND | 5 | 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 |
---|---|---|
2014-01-22 | L4867559-1 | ND |
2014-01-22 | L4867559-2 | ND |
2014-02-25 | L4899027-2 | ND |
2014-02-25 | L4899027-3 | ND |
2014-02-25 | L4899027-1 | ND |
2015-01-13 | 12274555 | ND |
2015-01-13 | 12274609 | ND |
2015-02-03 | 12389838 | ND |
2015-02-03 | 12389892 | ND |
2015-02-03 | 12389946 | ND |
2016-02-05 | 13858695 | ND |
2016-02-05 | 13858749 | ND |
2016-02-05 | 13858587 | ND |
2016-02-05 | 13858641 | ND |
2016-02-05 | 13858533 | ND |
2017-01-06 | 15503084 | ND |
2017-01-06 | 15502926 | ND |
2017-01-06 | 15502978 | ND |
2017-01-06 | 15503136 | ND |
2017-01-06 | 15503032 | ND |
2018-01-12 | L6983060-3 | ND |
2018-01-12 | L6983058-2 | ND |
2018-01-12 | L6983060-2 | ND |
2018-01-12 | L6983058-1 | ND |
2018-01-12 | L6983060-1 | ND |
2019-01-31 | L7090358-2 | ND |
2019-01-31 | L7090359-1 | ND |
2019-01-31 | L7090359-2 | ND |
2019-01-31 | L7090358-3 | ND |
2019-01-31 | L7090358-1 | ND |