cis-1,2-Dichloroethylene
Deforest Waterworks
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.
20
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 | 7 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 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 |
|---|---|---|
| 2014-06-24 | 140960001 | ND |
| 2014-06-24 | 140958001 | ND |
| 2014-06-24 | 140959001 | ND |
| 2014-07-23 | 147208001 | ND |
| 2014-08-12 | 150736001 | ND |
| 2014-09-10 | 156235001 | ND |
| 2014-10-15 | 163748001 | ND |
| 2015-02-17 | 179800001 | ND |
| 2015-02-17 | 179800003 | ND |
| 2015-09-15 | 217481001 | ND |
| 2016-04-18 | 249026001 | ND |
| 2016-04-18 | 249027001 | ND |
| 2016-09-26 | 279964001 | ND |
| 2017-06-20 | 999039 | ND |
| 2017-06-20 | 999036 | ND |
| 2018-03-13 | 1044929 | ND |
| 2018-03-13 | 1044928 | ND |
| 2018-08-29 | 404007001 | ND |
| 2019-06-19 | 1129331 | ND |
| 2019-06-19 | 1129330 | ND |