trans-1,2-Dichloroethylene
Epcor Water - Sun City
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 10 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-05-21 | 4051788-01 | ND |
| 2014-07-29 | 4072458-01 | ND |
| 2015-01-15 | 5011290-01V | ND |
| 2015-02-05 | 5020637-01V | ND |
| 2015-02-05 | 5020636-01V | ND |
| 2015-03-05 | 5030501-01V | ND |
| 2015-04-27 | 5042341-03 | ND |
| 2015-06-02 | 5060272-01V | ND |
| 2015-08-07 | 5080692-01V | ND |
| 2015-10-09 | 5101233-01 | ND |
| 2016-05-12 | 6051199-03 | ND |
| 2018-02-05 | 18B0335-01 | ND |
| 2018-02-05 | 18B0334-01 | ND |
| 2018-02-12 | 18B1065-01 | ND |
| 2018-02-15 | 18B1536-01 VOC | ND |
| 2018-02-15 | 18B1535-01 | ND |
| 2018-02-16 | 18B1612-01 | ND |
| 2018-06-13 | 18F1372-01 VOC | ND |
| 2018-08-01 | 18H0147-01 VOC | ND |
| 2018-08-20 | 18H2041-01 VOC | ND |
| 2018-11-06 | 18K0577-01 | ND |