cis-1,2-Dichloroethylene
South Weare Water
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 | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-09-26 | 3409-2326 | ND |
| 2014-12-31 | 3501-2 | ND |
| 2015-03-31 | 3503-2289 | ND |
| 2015-06-30 | 3506-3124 | ND |
| 2015-09-27 | 3509-2643-1 | ND |
| 2016-06-30 | 3607-96-1 | ND |
| 2016-12-31 | 3612-2018-2 | ND |
| 2017-04-09 | 3704-823-1 | ND |
| 2018-10-25 | 1810-03418-001 | ND |