cis-1,2-Dichloroethylene
City of Frederick
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.
15
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 | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 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 |
|---|---|---|
| 2014-05-01 | 0100015_01_04859 | ND |
| 2014-05-01 | 0100015_02_04859 | ND |
| 2014-06-23 | 0100015_03_05545 | ND |
| 2015-04-08 | E15003180001 | ND |
| 2015-04-08 | E15003180004 | ND |
| 2015-04-08 | E15003180006 | ND |
| 2016-04-25 | E16003991004 | ND |
| 2016-04-25 | E16003990001 | ND |
| 2016-04-25 | E16003991001 | ND |
| 2017-04-04 | E17003903001 | ND |
| 2017-04-05 | E17003943001 | ND |
| 2018-05-09 | E18004058006 | ND |
| 2018-05-09 | E18004058001 | ND |
| 2019-04-04 | E19003305001 | ND |
| 2019-04-04 | E19003305004 | ND |