trans-1,2-Dichloroethylene
Highridge Water Authority
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 | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2014-02-19 | 14022960-001 | ND |
2014-02-19 | 14022960-002 | ND |
2015-02-18 | 12465607 | ND |
2015-02-18 | 12465627 | ND |
2016-02-18 | 13934825 | ND |
2016-02-18 | 13934846 | ND |
2017-04-05 | 16027019 | ND |
2017-04-05 | 16027042 | ND |
2018-06-13 | 7054911001 | ND |
2018-06-13 | 7054911002 | ND |
2019-06-12 | 7093386001 | ND |
2019-06-12 | 7093386002 | ND |
2019-07-16 | 7097758001 | ND |
2019-07-16 | 7097758002 | ND |