cis-1,2-Dichloroethylene
City of Bellaire
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 | 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 | 4 | 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 |
|---|---|---|
| 2015-01-20 | AC76762 | ND |
| 2015-01-20 | AC76768 | ND |
| 2016-01-12 | AD17574 | ND |
| 2016-04-06 | AD32081 | ND |
| 2017-01-18 | AD65361 | ND |
| 2017-01-18 | AD65397 | ND |
| 2018-01-24 | AE10238 | ND |
| 2018-04-09 | AE21694 | ND |
| 2019-01-15 | AE49865 | ND |
| 2019-01-15 | AE49837 | ND |
| 2019-04-02 | AE60887 | ND |
| 2019-07-10 | AE73926 | ND |