trans-1,2-Dichloroethylene
Boh-nak Mobile Home Park
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 | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-02-01 | E18002794001 | ND |
| 2018-05-03 | E18003986001 | ND |
| 2018-07-26 | E19000268001 | ND |
| 2018-11-08 | E19001598001 | ND |
| 2019-03-28 | E19003182001 | ND |
| 2019-06-06 | E19004198001 | ND |
| 2019-09-05 | E20000965001 | ND |
| 2019-10-24 | E20001624001 | ND |
| 2020-03-05 | E20003055001 | ND |
| 2020-06-03 | E20003736001 | ND |
| 2020-07-23 | E21000238001 | ND |
| 2020-10-22 | E21001138001 | ND |
| 2021-02-10 | E21002098006 | ND |
| 2021-05-21 | E21003420001 | ND |
| 2021-07-15 | E22000161001 | ND |
| 2021-09-22 | E22000963001 | ND |
| 2021-11-17 | E2200089904 | ND |
| 2022-02-15 | 021522_02_021622250 | ND |
| 2023-02-16 | E2300185106 | ND |
| 2023-06-07 | E2300298601 | ND |
| 2023-08-02 | E2400035701 | ND |
| 2023-10-17 | E2400092901 | ND |