cis-1,2-Dichloroethylene
Tahlequah PWA
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.
16
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 4 | 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
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 |
|---|---|---|
| 2014-03-18 | 4C19114-01 | ND |
| 2014-05-06 | 4E07128-01 | ND |
| 2014-07-22 | 4G23092-01 | ND |
| 2014-10-21 | 4J22060-01 | ND |
| 2015-03-24 | 5C25045-01 | ND |
| 2015-05-26 | 5E27065-01 | ND |
| 2015-09-15 | 5I16064-01 | ND |
| 2015-12-08 | 5L09067-01 | ND |
| 2016-03-08 | 6C09092-01 | ND |
| 2016-03-08 | 6C09093-01 | ND |
| 2016-05-10 | 6E11039-01 | ND |
| 2016-09-27 | 6I28024-01 | ND |
| 2017-02-07 | 7B08033-01 | ND |
| 2018-02-06 | AB07206-01 | ND |
| 2019-03-26 | BC27034-01 | ND |
| 2019-10-29 | BJ30058-01 | ND |