trans-1,2-Dichloroethylene
Grandfield
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 |
|---|---|---|---|---|
| 2014 | ND | 8 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 9 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-01-14 | 4A15110-02 | ND |
| 2014-01-14 | 4A15110-01 | ND |
| 2014-04-02 | 4D02135-02 | ND |
| 2014-04-02 | 4D02135-01 | ND |
| 2014-07-09 | 4G09070-02 | ND |
| 2014-07-09 | 4G09070-01 | ND |
| 2014-10-08 | 4J08081-02 | ND |
| 2014-10-08 | 4J08081-01 | ND |
| 2015-01-06 | 5A07102-03 | ND |
| 2015-01-07 | 5A07102-02 | ND |
| 2015-04-08 | 5D08117-02 | ND |
| 2015-04-08 | 5D08117-01 | ND |
| 2015-07-15 | 5G15135-02 | ND |
| 2015-07-15 | 5G15135-01 | ND |
| 2015-10-07 | 5J07145-04 | ND |
| 2015-10-07 | 5J07145-02 | ND |
| 2016-01-27 | 6A27053-04 | ND |
| 2016-01-27 | 6A27053-01 | ND |
| 2016-03-09 | 6C09144-01 | ND |
| 2016-04-06 | 6D06141-04 | ND |
| 2016-04-06 | 6D06141-03 | ND |
| 2016-07-12 | 6G13161-03 | ND |
| 2016-07-12 | 6G13161-01 | ND |
| 2016-10-05 | 6J05197-03 | ND |
| 2016-10-05 | 6J05197-01 | ND |
| 2017-10-04 | 7J04203-02 | ND |
| 2017-10-04 | 7J04203-01 | ND |
| 2018-01-17 | 8A17115-01 | ND |
| 2018-01-17 | 8A17115-02 | ND |