trans-1,2-Dichloroethylene
Town of Greenwood Water System
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 | 8 | 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 |
---|---|---|
2014-04-07 | AD90461 | ND |
2014-04-07 | AD90461 | ND |
2014-06-16 | AD92363 | ND |
2014-06-16 | AD92364 | ND |
2014-06-16 | AD92365 | ND |
2014-06-16 | AD92365 | ND |
2014-06-16 | AD92364 | ND |
2014-06-16 | AD92363 | ND |
2015-03-23 | 35181011005 | ND |
2015-03-23 | 35181011005 | ND |
2016-05-02 | 35242556005 | ND |
2016-05-02 | 35242556005 | ND |
2017-04-17 | 35307223003 | ND |
2017-04-17 | 35307223003 | ND |
2018-01-08 | 35367517001 | ND |
2018-01-08 | 35367517001 | ND |
2019-02-21 | 35449632001 | ND |
2019-02-21 | 35449632001 | ND |