trans-1,2-Dichloroethylene
Craven County 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.
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 | 6 | 0 | ND |
2016 | ND | 7 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 8 | 0 | ND |
2019 | ND | 8 | 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 |
---|---|---|
2014-09-11 | 7981-091114-W02V | ND |
2014-09-11 | 7981-091114-W01V | ND |
2014-09-11 | 7981-091114-W05V | ND |
2014-09-11 | 7981-091114-W03V | ND |
2014-09-11 | 7981-091114-W04V | ND |
2015-09-17 | ND | |
2015-09-17 | ND | |
2015-09-17 | ND | |
2015-09-17 | ND | |
2015-09-17 | ND | |
2015-10-28 | ND | |
2016-01-26 | 7981-012616-W01V | ND |
2016-09-23 | 7981-092316-W01V | ND |
2016-09-23 | 7981-092316-W02V | ND |
2016-09-23 | 7981-092316-W03V | ND |
2016-09-23 | 7981-092316-W04V | ND |
2016-09-23 | 7981-092316-W05V | ND |
2016-11-07 | 7981-110716-W01V | ND |
2017-01-17 | 7981-011717-W01V | ND |
2017-05-24 | 7981-052417-W01V | ND |
2017-09-26 | 7981-092617-W01V | ND |
2017-11-07 | 7981-110717-W01V | ND |
2017-12-12 | 7981-121217-EP1V | ND |
2018-01-24 | 7981-012418-W01V | ND |
2018-02-28 | 7981-022818-EP1V | ND |
2018-04-25 | 7981-042518-W01V | ND |
2018-06-19 | 7981-061918-EP1V | ND |
2018-07-19 | 7981-071918-W01V | ND |
2018-08-15 | 7981-081518-EP1V | ND |
2018-10-18 | 7981-101818-W01V | ND |
2018-11-27 | 7981-112718-EP1V | ND |
2019-01-30 | 7981-013019-W01V | ND |
2019-04-16 | 7981-041619-W01V | ND |
2019-07-11 | 7981-071119-EP1V | ND |
2019-12-11 | 7981-121119-W02V | ND |
2019-12-11 | 7981-121119-W03V | ND |
2019-12-11 | 7981-121119-W04V | ND |
2019-12-11 | 7981-121119-W05V | ND |
2019-12-11 | 7981-121119-EP1V | ND |