cis-1,2-Dichloroethylene
Atascosa Rural WSC
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.
17
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 | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-02-12 | AC42474 | ND |
| 2014-03-27 | AC48533 | ND |
| 2015-02-05 | AC79470 | ND |
| 2015-02-05 | AC79472 | ND |
| 2016-02-16 | AD23635 | ND |
| 2016-02-16 | AD23667 | ND |
| 2017-01-12 | AD64790 | ND |
| 2017-01-12 | AD64758 | ND |
| 2017-08-09 | AD92562 | ND |
| 2017-10-06 | AD99826 | ND |
| 2018-01-18 | AE09253 | ND |
| 2018-01-18 | AE09255 | ND |
| 2018-01-18 | AE09251 | ND |
| 2018-04-06 | AE21722 | ND |
| 2019-01-11 | AE49573 | ND |
| 2019-01-11 | AE49569 | ND |
| 2019-01-11 | AE49571 | ND |