1,2,4-Trichlorobenzene
Hubbard Hill Apartments
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
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 | 5 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 5 ppb
The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene 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 hormone disruption.
EPA Maximum Contaminant
Level (MCL): 70 ppb
The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-10-25 | CB82896VOC1 | ND |
| 2018-10-25 | CB82896 | ND |
| 2019-01-09 | CC26666 | ND |
| 2019-03-12 | CC66559 | ND |
| 2019-05-30 | CD24263 | ND |
| 2019-07-23 | CD63646 | ND |
| 2019-12-12 | CE87153 | ND |
| 2020-01-09 | CF10126 | ND |
| 2020-05-11 | CF93021 | ND |
| 2020-08-25 | CG61944 | ND |
| 2021-01-13 | CH46248 | ND |
| 2022-04-19 | CL12397 | ND |
| 2023-05-02 | CN96368 | ND |