1,2,4-Trichlorobenzene
North Hunt Special Utility District
NOTE: North Hunt Special Utility District purchases water from City of Commerce which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by City of Commerce.
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 | 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
NOTE: North Hunt Special Utility District purchases water from City of Commerce which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by City of Commerce.
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-14 | Q1806236001 | ND |
| 2018-06-04 | Q1822047005 | ND |
| 2019-02-21 | Q1907743003 | ND |
| 2019-02-21 | Q1907743004 | ND |
| 2020-05-07 | Q2018051005 | ND |
| 2020-08-04 | Q2030361001 | ND |
| 2021-01-27 | Q2102032003 | ND |
| 2021-01-27 | Q2102032005 | ND |
| 2022-02-10 | Q2204939002 | ND |
| 2022-10-26 | Q2232338003 | ND |
| 2023-02-15 | Q2306243003 | ND |
| 2023-02-15 | Q2306243005 | ND |