trans-1,2-Dichloroethylene
Far West Water & Sewer Inc
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 | 4 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 5 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-02-03 | 550-18898-5 | ND |
| 2014-02-03 | 550-18901-5 | ND |
| 2014-02-03 | 550-18903-5 | ND |
| 2014-03-05 | 550-20741-2 | ND |
| 2016-01-18 | 550-57423-2J | ND |
| 2016-01-18 | 550-57438-2J | ND |
| 2016-01-25 | 550-57774-1J | ND |
| 2016-01-25 | 550-57775-1J | ND |
| 2016-02-22 | 550-59253-1J | ND |
| 2019-01-29 | 550-117103-1 | ND |
| 2019-01-29 | 550-117103-2 | ND |
| 2019-01-29 | 550-117103-3 | ND |
| 2019-01-29 | 550-117103-4 | ND |
| 2019-01-29 | 550-117103-5 | ND |