trans-1,2-Dichloroethylene
Leigh Wsc-rural
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 | N/A | 0 | 0 | N/A |
2015 | ND | 3 | 0 | ND |
2016 | ND | 7 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2015-05-18 | Q1518186001 | ND |
2015-05-18 | Q1518186003 | ND |
2015-10-27 | Q1542396002 | ND |
2016-02-09 | Q1605518002 | ND |
2016-03-10 | Q1610136001 | ND |
2016-03-10 | Q1610136004 | ND |
2016-04-25 | Q1616019008 | ND |
2016-07-21 | Q1629877001 | ND |
2016-09-02 | Q1635702001 | ND |
2016-10-12 | Q1643524004 | ND |
2017-10-09 | Q1749466002 | ND |
2018-04-24 | Q1816640005 | ND |
2019-05-22 | Q1927732002 | ND |