trans-1,2-Dichloroethylene
Canada Woods 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.
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 | 3 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 60 ppb
The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL): 100 ppb
The legal limit for trans-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 |
|---|---|---|
| 2018-04-06 | CA2702588_029_029-201804061010 | ND |
| 2018-07-31 | CA2702588_029_029-201807310900 | ND |
| 2018-10-11 | CA2702588_029_029-201810110924 | ND |
| 2019-01-29 | CA2702588_029_029-201901291100 | ND |
| 2019-03-28 | CA2702588_027_027-201903281216 | ND |
| 2019-08-27 | CA2702588_001_001-201908271122 | ND |
| 2019-08-27 | CA2702588_002_002-201908271134 | ND |
| 2019-12-12 | CA2702588_008_008-201912120829 | ND |
| 2021-12-20 | CA2702588_028_028-202112201015 | ND |
| 2021-12-20 | CA2702588_010_010-202112201000 | ND |
| 2022-12-08 | CA2702588_002_002-202212081340 | ND |
| 2022-12-08 | CA2702588_001_001-202212081320 | ND |
| 2022-12-13 | CA2702588_029_029-202212131210 | ND |
| 2023-02-14 | CA2702588_029_029-202302141300 | ND |