1,2,4-Trichlorobenzene
Sublette, City of
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 | 4 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 6 | 0 | ND |
| 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 |
|---|---|---|
| 2018-12-18 | 1093052 | ND |
| 2018-12-18 | 1093055 | ND |
| 2018-12-18 | 1093056 | ND |
| 2018-12-18 | 1093057 | ND |
| 2019-07-08 | 1200018 | ND |
| 2021-06-28 | 1864890 | ND |
| 2021-06-28 | 1864889 | ND |
| 2021-06-28 | 1864888 | ND |
| 2021-06-28 | 1864887 | ND |
| 2021-08-24 | 1930858 | ND |
| 2021-08-24 | 1930857 | ND |
| 2022-07-11 | 2299621 | ND |
| 2022-08-02 | 2320829 | ND |
| 2022-10-03 | 2369911 | ND |
| 2022-10-31 | 2388259 | ND |
| 2023-01-09 | 2429096 | ND |
| 2023-04-03 | 2474308 | ND |
| 2023-07-17 | 2537737 | ND |
| 2023-10-03 | 2586302 | ND |