1,2,4-Trichlorobenzene
Hamburg Municipal Water&sewer Authority
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 | ND | 1 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-10-03 | 8007563-01 | ND |
| 2019-03-13 | 8017757-01 | ND |
| 2020-05-27 | 22259090.00 | ND |
| 2020-08-19 | 22841424.00 | ND |
| 2021-08-11 | 25064923.00 | ND |
| 2022-07-06 | 27080633.00 | ND |
| 2022-07-27 | 27279431.00 | ND |
| 2022-08-02 | 27279494.00 | ND |
| 2022-08-10 | 27279452.00 | ND |
| 2022-08-10 | 27279473.00 | ND |
| 2023-08-09 | 29542182.00 | ND |
| 2023-12-04 | 30283866.00 | ND |
| 2023-12-04 | 30283867.00 | ND |
| 2023-12-05 | 30283868.00 | ND |
| 2023-12-06 | 30283865.00 | ND |