cis-1,2-Dichloroethylene
Harris County MUD 168
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2015-09-21 | AD07844 | ND |
| 2015-09-21 | AD07828 | ND |
| 2016-10-27 | AD55155 | ND |
| 2016-10-27 | AD55159 | ND |
| 2017-09-19 | AD96780 | ND |
| 2017-09-19 | AD96784 | ND |
| 2018-08-16 | AE37405 | ND |
| 2018-08-16 | AE37403 | ND |
| 2019-09-05 | AE82300 | ND |
| 2019-09-05 | AE82308 | ND |
| 2019-12-12 | AE92307 | ND |