trans-1,2-Dichloroethylene
Applehill Farm Water District
NOTE: Applehill Farm Water District purchases water from New Castle/Stanwood WD which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by New Castle/Stanwood WD.
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 | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 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
NOTE: Applehill Farm Water District purchases water from New Castle/Stanwood WD which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by New Castle/Stanwood WD.
| Date | Lab ID | Result |
|---|---|---|
| 2018-09-24 | AU20755-POCS | ND |
| 2018-09-24 | AU20756-POCS | ND |
| 2019-05-31 | 7091708-POCS-NC | ND |
| 2019-11-12 | AV23851-POCS-NC | ND |
| 2020-05-08 | 70130549001-POCS-NC | ND |
| 2020-05-13 | AW08856-POCS | ND |
| 2020-10-21 | AW20413-POCS | ND |
| 2020-10-21 | AW20411-POCS | ND |
| 2020-11-09 | AW21631-POCS-NC | ND |
| 2021-05-27 | AX10204-POCS | ND |
| 2021-09-20 | AX19184-NC-POCS | ND |
| 2021-09-20 | AX19182-NC-POCS | ND |
| 2021-10-13 | AX20798-POCS | ND |
| 2021-10-14 | AX20887-POCS | ND |
| 2022-06-09 | AY09842-POCS | ND |
| 2022-10-24 | AY19123-NC-POCS | ND |
| 2022-10-24 | AY19130-NC-POCS | ND |
| 2022-11-01 | AY19672-POCS | ND |
| 2022-11-01 | AY19670-POCS | ND |
| 2023-06-20 | AZ10986-POCS | ND |
| 2023-10-17 | AZ19196-POCS | ND |
| 2023-10-17 | AZ19198-POCS | ND |
| 2023-10-19 | AZ19387-NC-POCS | ND |
| 2023-10-19 | AZ19384-NC-POCS | ND |