cis-1,2-Dichloroethylene
City of Madison
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.
15
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 | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-05-27 | 140528-004VO | ND |
| 2014-08-26 | 140827-001VO | ND |
| 2015-07-27 | 150728-018VO | ND |
| 2016-06-13 | 160614-019VO | ND |
| 2016-07-26 | 160727-005VO | ND |
| 2016-09-26 | 160927-028VO | ND |
| 2017-03-13 | 170314-006VO | ND |
| 2017-06-07 | 170608-003VO | ND |
| 2017-08-10 | 170811-001VO | ND |
| 2017-08-29 | 170830-006VO | ND |
| 2017-11-08 | 171109-005VO | ND |
| 2018-07-16 | 180717-011VO | ND |
| 2018-12-28 | 181228-002VO | ND |
| 2019-07-15 | 190716-010VO | ND |
| 2019-07-15 | 190716-011VO | ND |