trans-1,2-Dichloroethylene
Honaker, Town of
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 | 6 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-04-23 | E180307252 | ND |
| 2018-08-22 | E180700419 | ND |
| 2018-12-19 | E181001665 | ND |
| 2018-12-27 | E181206857 | ND |
| 2018-12-27 | E181206858 | ND |
| 2018-12-27 | E181206859 | ND |
| 2019-04-08 | E190308185 | ND |
| 2019-08-21 | E190607897 | ND |
| 2019-11-13 | E191004918 | ND |
| 2019-11-13 | E191004917 | ND |
| 2020-06-29 | E200305055 | ND |
| 2020-07-28 | E200609584 | ND |
| 2020-10-14 | E200905550 | ND |
| 2020-10-14 | E200905537 | ND |
| 2021-07-21 | E210608121 | ND |
| 2021-10-12 | E211001126 | ND |
| 2021-10-12 | E211001127 | ND |
| 2021-12-13 | E211200845 | ND |
| 2022-07-19 | E220609531 | ND |
| 2022-10-11 | E221000058 | ND |
| 2022-10-11 | E221000054 | ND |
| 2022-10-11 | E221000052 | ND |
| 2023-08-14 | E230705158 | ND |
| 2023-09-12 | E230900046 | ND |
| 2023-09-12 | E230900047 | ND |
| 2023-09-12 | E230900048 | ND |
| 2023-10-03 | E230907423 | ND |