trans-1,2-Dichloroethylene
Pixley Public Utility 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 | 6 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-18 | CA5410009_006_006-201801181115 | ND |
| 2018-03-06 | CA5410009_004_004-201803060945 | ND |
| 2018-03-06 | CA5410009_006_006-201803061000 | ND |
| 2018-05-03 | CA5410009_011_011-201805030915 | ND |
| 2018-08-21 | CA5410009_011_011-201808211130 | ND |
| 2018-10-09 | CA5410009_011_011-201810091045 | ND |
| 2019-01-15 | CA5410009_011_011-201901151120 | ND |
| 2019-04-16 | CA5410009_011_011-201904161100 | ND |
| 2020-01-23 | CA5410009_011_011-202001231055 | ND |
| 2021-10-22 | CA5410009_011_011-202110221054 | ND |
| 2022-08-08 | CA5410009_013_013-202208081140 | ND |
| 2022-11-04 | CA5410009_013_013-202211041100 | ND |
| 2023-01-13 | CA5410009_013_013-202301131048 | ND |
| 2023-05-01 | CA5410009_013_013-202305011054 | ND |