cis-1,2-Dichloroethylene
Galveston County Water Control and Improvement District 8
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 |
|---|---|---|---|---|
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-02-27 | AC45085 | ND |
| 2014-05-28 | AC55339 | ND |
| 2014-08-13 | AC63441 | ND |
| 2014-11-20 | AC72687 | ND |
| 2015-01-27 | AC77967 | ND |
| 2015-06-02 | AC94162 | ND |
| 2016-03-23 | AD30141 | ND |
| 2017-02-07 | AD69218 | ND |
| 2018-03-19 | AE18872 | ND |
| 2018-03-19 | AE18882 | ND |
| 2019-02-04 | AE52698 | ND |