trans-1,2-Dichloroethylene
Suburban East Salem WD
NOTE: Suburban East Salem WD purchases water from Salem Public Works which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Salem Public Works.
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 | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 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
NOTE: Suburban East Salem WD purchases water from Salem Public Works which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Salem Public Works.
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-10 | 201402110122-V | ND |
| 2014-06-30 | 201407010127-V | ND |
| 2015-01-29 | 201501300125-V | ND |
| 2015-05-18 | 201505070224-V | ND |
| 2016-05-11 | 201604140078-V | ND |
| 2016-08-23 | 201608050473-V | ND |
| 2016-11-30 | 201611280122-V | ND |
| 2017-01-31 | 201702010756A-V | ND |
| 2017-06-01 | 201706020201-V | ND |
| 2018-01-24 | 201801250239-V | ND |
| 2019-02-07 | 201902080338-V | ND |