cis-1,2-Dichloroethylene
City Of South Shore Water Works
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.
10
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 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-08-06 | 4080407-01 | ND |
| 2017-11-01 | 7111499-01 | ND |
| 2018-03-27 | 8033410-01 | ND |
| 2018-05-09 | 8051920-01 | ND |
| 2018-08-01 | 8110005-01 | ND |
| 2018-11-28 | 8110423-01 | ND |
| 2019-03-27 | 9030723-01 | ND |
| 2019-05-29 | 9050275-01 | ND |
| 2019-08-14 | 9080489-01 | ND |
| 2019-11-06 | 9110610-01 | ND |