trans-1,2-Dichloroethylene
Bell Arthur Water Corporation
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 | 3 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 2 | 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 |
---|---|---|
2014-05-13 | 8031-051314-E07V | ND |
2014-05-13 | 8031-051314-E06V | ND |
2014-05-14 | 8031-051414-E05V | ND |
2015-05-27 | ND | |
2016-05-17 | 8031-051716-E04V | ND |
2016-05-17 | 8031-051716-E07V | ND |
2016-08-29 | 8031-082916-E03V | ND |
2017-05-02 | 8031-050217-E06V | ND |
2017-05-02 | 8031-050217-E07V | ND |
2017-05-02 | 8031-050217-E05V | ND |
2017-08-17 | 8031-081717-E06V | ND |
2017-11-27 | 8031-112717-E06V | ND |
2018-02-28 | 8031-022818-E06V | ND |
2018-05-14 | 8031-051418-E06V | ND |
2019-04-24 | 8031-042419-E04V | ND |
2019-05-22 | 8031-052219-E06V | ND |
2019-08-19 | 8031-081919-E03V | ND |