1,2,4-Trichlorobenzene
Northwoods Mhc
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 | 1 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.133 ppb | 3 | 1 | ND - 0.400 ppb |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-08-28 | A180604416 | ND |
| 2021-08-11 | 1H02358-02 | ND |
| 2021-09-22 | 1I03644-03 | 0.400 ppb |
| 2021-12-01 | 1L00467-01 | ND |
| 2022-02-09 | 2B01307-01 | ND |
| 2022-05-04 | 2E00922-01 | ND |
| 2022-07-06 | 2G01141-01 | ND |
| 2022-11-17 | 2K02451-01 | ND |
| 2023-02-16 | 3B02393-01 | ND |
| 2023-04-27 | 3D03593-01 | ND |
| 2023-07-27 | 3G04617-02 | ND |
| 2023-10-19 | 23102250-001A | ND |