cis-1,2-Dichloroethylene
Rollinsford Water and Sewer
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 | 2 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2014-02-11 | 128902.01 | ND |
| 2014-12-02 | 138726.01 | ND |
| 2016-11-16 | 163035.01 | ND |
| 2016-11-16 | 163036.01 | ND |
| 2017-11-01 | 175422.01 | ND |
| 2017-11-01 | 175424.01 | ND |
| 2018-03-06 | 179444.01 | ND |
| 2018-03-06 | 179443.01 | ND |
| 2018-12-12 | 190319.01 | ND |
| 2019-03-21 | 193276.01 | ND |
| 2019-03-21 | 193276.03 | ND |
| 2019-06-21 | 197198.01 | ND |
| 2019-08-29 | 199960.01 | ND |
| 2019-12-18 | 204946.01 | ND |
| 2019-12-18 | 204945.01 | ND |