trans-1,2-Dichloroethylene
Wugt - West Phoenix Estates 6 Domestic Water Improvement District
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 | 6 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2018-07-18 | 550-106216-1 | ND |
| 2018-08-23 | 201808230344V | ND |
| 2019-07-03 | 550-125397-1 | ND |
| 2019-07-23 | 201907230335V | ND |
| 2020-07-07 | 202007080179V | ND |
| 2020-10-21 | 550-151517-1 | ND |
| 2021-01-06 | 550-155831-1 | ND |
| 2021-04-07 | 202104090656V | ND |
| 2021-06-03 | 202106040081V | ND |
| 2021-07-28 | 550-167881-1 | ND |
| 2021-08-04 | 550-168364-1 | ND |
| 2021-10-06 | 550-1741840-1 | ND |
| 2022-05-09 | 380-1631-1 | ND |
| 2023-04-19 | 380-44360-1 | ND |