trans-1,2-Dichloroethylene
Seabrook Water Department
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 5 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | ND | 6 | 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 |
---|---|---|
2014-02-11 | 1402-00181-001 | ND |
2014-05-08 | 1405-00260-001 | ND |
2014-07-29 | 1407-00835-001 | ND |
2014-08-07 | 1408-00253-001 | ND |
2014-08-07 | 1408-00255-001 | ND |
2015-01-21 | 1501-00978-001 | ND |
2015-05-07 | 1505-00682-001 | ND |
2015-08-24 | 1508-01935-001 | ND |
2015-08-31 | 1508-02458-001 | ND |
2015-08-31 | 1508-02455-001 | ND |
2016-01-25 | 1601-01693-001 | ND |
2016-06-02 | 1606-00330-001 | ND |
2016-07-26 | 1607-02666-001 | ND |
2016-07-26 | 1607-02671-001 | ND |
2016-07-26 | 1607-02675-001 | ND |
2017-02-02 | 1702-00228-001 | ND |
2017-04-14 | 1704-01361-001 | ND |
2017-07-17 | 1707-01722-001 | ND |
2017-07-17 | 1707-01726-001 | ND |
2017-07-17 | 1707-01732-001 | ND |
2018-03-27 | 1803-02184-001 | ND |
2018-05-15 | 1805-01978-001 | ND |
2018-08-07 | 1808-01032-001 | ND |
2018-08-07 | 1808-01033-001 | ND |
2018-08-07 | 1808-01034-001 | ND |
2019-02-05 | 1902-00312-001 | ND |
2019-05-07 | 1905-00838-001 | ND |
2019-07-11 | 1907-01450-001 | ND |
2019-07-11 | 1907-01457-001 | ND |
2019-07-11 | 1907-01506-001 | ND |
2019-07-23 | 1907-03271-001 | ND |