cis-1,2-Dichloroethylene
Roxbury Water Company
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.
23
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 10 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 1 | 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 |
|---|---|---|
| 2014-01-16 | L4861829-3 | ND |
| 2014-01-16 | L4861829-6 | ND |
| 2014-01-16 | L4861829-1 | ND |
| 2014-01-16 | L4861829-5 | ND |
| 2014-01-16 | L4861829-4 | ND |
| 2014-04-10 | L1664237-5 | ND |
| 2014-04-10 | L1664237-1 | ND |
| 2014-04-10 | L1664237-4 | ND |
| 2014-04-10 | L1664237-2 | ND |
| 2014-04-10 | L1664237-3 | ND |
| 2015-01-22 | L5417699-1 | ND |
| 2016-01-07 | L6008973-1 | ND |
| 2017-01-05 | L6597239-4 | ND |
| 2017-01-05 | L6597239-2 | ND |
| 2017-01-05 | L6597239-1 | ND |
| 2017-01-05 | L6597239-3 | ND |
| 2017-01-05 | L6597239-5 | ND |
| 2018-01-11 | L6949245-1 | ND |
| 2019-01-16 | 42661201 | ND |
| 2019-01-16 | 42660601 | ND |
| 2019-01-16 | 42660401 | ND |
| 2019-01-16 | 42661001 | ND |
| 2019-01-16 | 42660801 | ND |