1,2,4-Trichlorobenzene
Center Point Taylor System
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 | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 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: 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 |
|---|---|---|
| 2018-01-11 | AE08972 | ND |
| 2018-01-11 | AE08974 | ND |
| 2019-07-17 | AE74876 | ND |
| 2019-07-17 | AE74878 | ND |
| 2020-10-14 | AF30641 | ND |
| 2020-10-14 | AF30647 | ND |
| 2021-03-24 | AF48152 | ND |
| 2021-03-24 | AF48154 | ND |
| 2021-05-25 | AF55355 | ND |
| 2021-05-25 | AF55357 | ND |
| 2022-03-30 | AF91304 | ND |
| 2022-03-30 | AF91306 | ND |
| 2023-09-25 | AG57465 | ND |
| 2023-09-25 | AG57467 | ND |