cis-1,2-Dichloroethylene
Delaware City PWS
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.
11
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 | 6 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 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 |
|---|---|---|
| 2014-01-08 | 14-10197-07B | ND |
| 2014-04-22 | 14-14820-01 | ND |
| 2014-04-29 | 14-15064-01 | ND |
| 2014-05-06 | 14-15329-01 | ND |
| 2014-08-07 | 14-20328-01 | ND |
| 2014-08-07 | 14-20328-02 | ND |
| 2015-01-09 | 15-10315-05B | ND |
| 2016-01-12 | 16-10537-01B | ND |
| 2017-01-11 | 17-10616-02 | ND |
| 2018-01-09 | 18-10443-02B | ND |
| 2019-01-08 | 19-10475-01B | ND |