trans-1,2-Dichloroethylene
Olivehurst Public UD
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-03-05 | 2236-001-0900 | ND |
| 2014-10-22 | 1233-020-0813 | ND |
| 2014-11-24 | 1233-001-0742 | ND |
| 2015-01-13 | 1233-001-0719 | ND |
| 2015-04-22 | 1610-001-0755 | ND |
| 2015-10-27 | 1610-001-0755 | ND |
| 2016-01-14 | 1610-001-0803 | ND |
| 2016-01-27 | 1610-006-1346 | ND |
| 2016-02-09 | 1610-002-1358 | ND |
| 2016-02-09 | 1610-010-1407 | ND |
| 2017-01-19 | 1610-001-0904 | ND |
| 2018-01-11 | 1610-001-0826 | ND |
| 2019-01-15 | 1610-001-0903 | ND |
| 2019-11-14 | 1610-018-0840 | ND |