trans-1,2-Dichloroethylene
City of Coeur D Alene
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 | 7 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2014-01-27 | V012714130 | ND |
2014-05-13 | V150466 | ND |
2014-06-02 | V060214100 | ND |
2014-06-02 | V060214127 | ND |
2014-06-02 | V060214102 | ND |
2014-06-02 | V06021499 | ND |
2014-07-02 | V152097 | ND |
2015-01-16 | V158015 | ND |
2015-04-08 | V159924 | ND |
2015-06-08 | V161616 | ND |
2015-07-14 | V162588 | ND |
2015-10-01 | V165209 | ND |
2016-04-28 | V170589 | ND |
2016-05-03 | V170663 | ND |
2016-06-07 | V171695 | ND |
2017-07-06 | V183757 | ND |
2018-07-16 | V195339 | ND |
2019-05-29 | V204292 | ND |
2019-05-29 | V204289 | ND |
2019-06-03 | V204364 | ND |