cis-1,2-Dichloroethylene
Quonnipaug Hills - Main System
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.
21
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 | 2 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-01-21 | BG01464VOC1 | ND |
| 2015-07-10 | BJ44754VOC1 | ND |
| 2015-12-11 | BK35925VOC1 | ND |
| 2016-01-07 | BK49383VOC1 | ND |
| 2016-02-11 | BK64593VOC1 | ND |
| 2016-04-11 | BN11225VOC1 | ND |
| 2016-07-11 | BN70336VOC1 | ND |
| 2016-10-20 | BV59931VOC1 | ND |
| 2017-01-13 | BX22532VOC1 | ND |
| 2017-04-13 | BY03996VOC1 | ND |
| 2017-07-17 | BY61053VOC1 | ND |
| 2017-10-06 | BZ17191VOC1 | ND |
| 2018-01-12 | BZ72130VOC1 | ND |
| 2018-04-09 | CA16218VOC1 | ND |
| 2018-08-10 | CB09067 | ND |
| 2018-10-01 | CB61937 | ND |
| 2019-02-19 | CC53974 | ND |
| 2019-04-01 | CC78540 | ND |
| 2019-07-08 | CD51641 | ND |
| 2019-10-08 | CE28860 | ND |
| 2019-10-08 | CE28859 | ND |