1,2,4-Trichlorobenzene
South Trail Commerce
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 11 | 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 |
|---|---|---|
| 2022-12-08 | 22L0282-01 | ND |
| 2022-12-30 | D2L2371-02VOC | ND |
| 2022-12-30 | D2L2367-02VOC | ND |
| 2023-03-21 | 23C0646-01 | ND |
| 2023-03-27 | 23C0845-01V | ND |
| 2023-06-19 | D3F2157-01VOC | ND |
| 2023-06-19 | D3F2157-08VOC | ND |
| 2023-06-19 | D3F2161-01VOC | ND |
| 2023-06-19 | D3F2161-08VOC | ND |
| 2023-07-21 | D3G2520-07VOC | ND |
| 2023-07-21 | D3G2520-02VOC | ND |
| 2023-07-21 | D3G2520-11VOC | ND |
| 2023-10-24 | 23J0806-02 | ND |
| 2023-10-24 | 23J0806-01 | ND |