trans-1,2-Dichloroethylene
Suburban Water Systems - La Mirada
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 | 2 | 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 |
---|---|---|
2014-05-29 | 2706-015-0940 | ND |
2014-08-19 | 2706-006-1243 | ND |
2015-06-30 | 9588-015-1015 | ND |
2015-08-13 | 9588-006-1041 | ND |
2016-05-19 | 9588-015-1220 | ND |
2016-08-04 | 9588-006-1208 | ND |
2017-05-08 | 9588-015-1259 | ND |
2017-08-07 | 9588-006-1420 | ND |
2018-05-24 | 9588-015-1128 | ND |
2018-09-07 | 9588-006-1503 | ND |
2019-05-14 | 9588-015-1513 | ND |
2019-09-10 | 9588-006-0959 | ND |