trans-1,2-Dichloroethylene
North Texas Municipal Water District Wylie Water Treatment Plant
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 | 3 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 2 | 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 |
---|---|---|
2014-08-01 | Q1433373008 | ND |
2014-08-01 | Q1433373006 | ND |
2014-08-01 | Q1433373004 | ND |
2015-09-18 | Q1536877003 | ND |
2015-09-18 | Q1536877005 | ND |
2015-09-18 | Q1536877001 | ND |
2016-09-06 | Q1635670001 | ND |
2016-09-06 | Q1635670006 | ND |
2016-09-06 | Q1635670004 | ND |
2017-09-26 | Q1746572004 | ND |
2017-09-26 | Q1746572002 | ND |
2018-09-17 | Q1836833016 | ND |
2018-09-17 | Q1836833014 | ND |
2018-09-17 | Q1836833012 | ND |
2019-01-15 | Q1902044002 | ND |
2019-08-02 | Q1950721001 | ND |
2019-08-02 | Q1950721003 | ND |