cis-1,2-Dichloroethylene
City of Brenham
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.
9
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 | 4 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-09-23 | AC67921 | ND |
| 2015-09-11 | AD06912 | ND |
| 2016-02-23 | AD25094 | ND |
| 2016-05-16 | AD36823 | ND |
| 2016-09-12 | AD48866 | ND |
| 2016-10-24 | AD54400 | ND |
| 2017-01-25 | AD66848 | ND |
| 2018-01-30 | AE11301 | ND |
| 2019-01-28 | AE51642 | ND |