cis-1,2-Dichloroethylene
City of La Grande
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.
12
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 5 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 6 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for cis-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 |
|---|---|---|
| 2014-07-09 | 1415881-V | ND |
| 2014-07-09 | 1415891-V | ND |
| 2014-07-09 | 1415801-V | ND |
| 2014-07-09 | 1415811-V | ND |
| 2014-07-23 | 1420011-V | ND |
| 2017-07-19 | 1711621-V | ND |
| 2017-07-19 | 1711611-V | ND |
| 2017-07-19 | 1711631-V | ND |
| 2017-07-19 | 1711601-V | ND |
| 2017-09-13 | 1727361-V | ND |
| 2017-12-06 | 1752751-V | ND |
| 2019-06-12 | 1899471-V | ND |