cis-1,2-Dichloroethylene
Lynnfield Water District (MWRA)
NOTE: Lynnfield Water District (MWRA) purchases water from Massachusetts Water Resources Authority (MWRA) which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by Massachusetts Water Resources Authority (MWRA).
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 5 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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
NOTE: Lynnfield Water District (MWRA) purchases water from Massachusetts Water Resources Authority (MWRA) which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by Massachusetts Water Resources Authority (MWRA).
| Date | Result |
|---|---|
| 2018-10-16 | ND |
| 2018-10-16 | ND |
| 2019-10-15 | ND |
| 2019-10-15 | ND |
| 2020-10-06 | ND |
| 2020-10-06 | ND |
| 2021-10-19 | ND |
| 2021-10-19 | ND |
| 2022-10-04 | ND |
| 2022-10-04 | ND |
| 2023-10-24 | ND |
| 2023-10-24 | ND |