cis-1,2-Dichloroethylene
Harris County MUD 167
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.
12
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 | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 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 |
|---|---|---|
| 2014-08-13 | AC63433 | ND |
| 2015-07-30 | AD01788 | ND |
| 2016-12-05 | AD60361 | ND |
| 2017-02-03 | AD68751 | ND |
| 2017-02-03 | AD68749 | ND |
| 2017-04-21 | AD80731 | ND |
| 2017-08-01 | AD91627 | ND |
| 2017-10-24 | AE01839 | ND |
| 2018-11-06 | AE45445 | ND |
| 2018-11-06 | AE45447 | ND |
| 2019-08-27 | AE81098 | ND |
| 2019-08-27 | AE81096 | ND |