trans-1,2-Dichloroethylene
Elizabethtown Area Water
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 | 3 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 6 | 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 | 8044341-01 | ND |
| 2018-04-23 | 8044341-02 | ND |
| 2018-04-23 | 8044341-03 | ND |
| 2019-06-10 | 9045803-02RE | ND |
| 2019-06-10 | 9045803-03 | ND |
| 2019-06-10 | 9045803-01 | ND |
| 2020-05-26 | 22371323.00 | ND |
| 2020-05-26 | 22371281.00 | ND |
| 2020-05-26 | 22371260.00 | ND |
| 2020-05-26 | 22371302.00 | ND |
| 2020-05-26 | 22371239.00 | ND |
| 2021-02-12 | 24019999.00 | ND |
| 2021-04-05 | 24395293.00 | ND |
| 2021-04-05 | 24395272.00 | ND |
| 2021-04-05 | 24395314.00 | ND |
| 2022-04-18 | 26609239.00 | ND |
| 2022-04-18 | 26609260.00 | ND |
| 2022-04-18 | 26609218.00 | ND |
| 2023-04-24 | 28860160.00 | ND |
| 2023-04-24 | 28860161.00 | ND |
| 2023-04-24 | 28860159.00 | ND |
| 2023-05-08 | 29061840.00 | ND |
| 2023-05-08 | 29061841.00 | ND |
| 2023-05-08 | 29061842.00 | ND |