trans-1,2-Dichloroethylene
Des Moines Water 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 1 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 3 | 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 |
---|---|---|
2014-10-08 | 2085404 | ND |
2015-07-13 | OE266315 | ND |
2015-08-10 | OE277679 | ND |
2016-09-30 | OE435255 | ND |
2016-09-30 | OE435256 | ND |
2017-12-15 | OE601645 | ND |
2018-07-09 | OE680202 | ND |
2018-07-16 | OE683859 | ND |
2018-10-08 | OE724008 | ND |
2019-07-09 | OE831885 | ND |
2019-07-16 | OE835743 | ND |
2019-08-21 | OE854920 | ND |