cis-1,2-Dichloroethylene
Lake Conroe Forest Subdivision
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 | 1 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 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 |
|---|---|---|
| 2014-08-07 | AC62534 | ND |
| 2015-08-04 | AD02341 | ND |
| 2015-08-04 | AD02339 | ND |
| 2016-12-12 | AD61684 | ND |
| 2016-12-12 | AD61690 | ND |
| 2017-07-27 | AD91126 | ND |
| 2017-07-27 | AD91122 | ND |
| 2018-05-23 | AE27500 | ND |
| 2018-05-23 | AE27498 | ND |
| 2019-07-18 | AE75047 | ND |
| 2019-07-18 | AE75055 | ND |