trans-1,2-Dichloroethylene
Rosebrook Water
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 | 5 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 6 | 0 | ND |
2019 | ND | 5 | 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 |
---|---|---|
2014-01-14 | 128211.01 | ND |
2014-04-08 | 130316.01 | ND |
2014-07-01 | 133130.01 | ND |
2014-10-07 | 136569.01 | ND |
2014-10-07 | 136570.01 | ND |
2015-03-03 | 140973.01 | ND |
2015-04-07 | 141939.01 | ND |
2015-07-21 | 145948.01 | ND |
2015-10-19 | 149322.01 | ND |
2015-10-19 | 149322.02 | ND |
2016-01-05 | 151873.01 | ND |
2016-04-11 | 154734.01 | ND |
2016-07-05 | 157890.01 | ND |
2016-10-04 | 161154.01 | ND |
2016-10-04 | 161151.01 | ND |
2017-01-03 | 164323.01 | ND |
2017-04-04 | 167117.01 | ND |
2017-07-11 | 170838.01 | ND |
2017-10-03 | 174156.01 | ND |
2017-10-03 | 174164.01 | ND |
2018-01-09 | 177705.01 | ND |
2018-04-03 | 180179.01 | ND |
2018-08-14 | 185436.01 | ND |
2018-08-14 | 185435.01 | ND |
2018-11-06 | 188759.01 | ND |
2018-12-28 | 190707.01 | ND |
2019-01-08 | 191004.01 | ND |
2019-05-09 | 195257.01 | ND |
2019-09-03 | 199820.01 | ND |
2019-11-12 | 203281.01 | ND |
2019-11-12 | 203281.02 | ND |