1,2,4-Trichlorobenzene
Huttig Waterworks
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 | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 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 |
|---|---|---|
| 2018-02-27 | 18060003201 | ND |
| 2018-10-29 | 18305001209 | ND |
| 2019-01-28 | 19031001001 | ND |
| 2019-01-28 | 19031001109 | ND |
| 2019-05-01 | 19121003308 | ND |
| 2019-09-03 | 19248002109 | ND |
| 2020-01-28 | 20030005107 | ND |
| 2020-06-16 | 20170003902 | ND |
| 2021-01-27 | 21028015001 | ND |
| 2021-05-19 | 21140004502 | ND |
| 2022-01-24 | 22027007501 | ND |
| 2022-05-23 | O198471-VOC-1 | ND |
| 2023-02-14 | O206558-VOC-1 | ND |
| 2023-05-30 | O209502-VOC-1 | ND |