trans-1,2-Dichloroethylene
McAllen Public Utility
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 | 2 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-08-18 | AC63987 | ND |
2014-08-18 | AC63989 | ND |
2015-03-12 | AC84169 | ND |
2015-06-10 | AC95446 | ND |
2015-08-06 | AD02990 | ND |
2015-08-06 | AD02982 | ND |
2015-11-18 | AD14071 | ND |
2016-06-30 | AD42708 | ND |
2016-08-02 | AD46659 | ND |
2017-04-19 | AD80199 | ND |
2017-07-12 | AD89107 | ND |
2018-08-15 | AE37228 | ND |
2018-08-15 | AE37206 | ND |
2019-05-22 | AE67703 | ND |
2019-09-04 | AE82073 | ND |