trans-1,2-Dichloroethylene
Military Highway WSC - Las Rusias WTP
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 | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 4 | 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 |
|---|---|---|
| 2014-09-23 | AC67931 | ND |
| 2015-08-04 | AD02359 | ND |
| 2016-08-04 | AD47152 | ND |
| 2016-10-26 | AD54867 | ND |
| 2017-02-28 | AD72506 | ND |
| 2017-05-02 | AD82218 | ND |
| 2017-08-15 | AD93124 | ND |
| 2017-08-15 | AD93110 | ND |
| 2018-02-14 | AE13782 | ND |
| 2018-08-14 | AE36945 | ND |
| 2019-08-21 | AE79876 | ND |
| 2019-08-21 | AE79880 | ND |