1,2,4-Trichlorobenzene
Dean Dale Special Utility District
NOTE: Dean Dale Special Utility District purchases water from City of Wichita Falls which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by City of Wichita Falls.
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 | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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: Dean Dale Special Utility District purchases water from City of Wichita Falls which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by City of Wichita Falls.
| Date | Lab ID | Result |
|---|---|---|
| 2018-08-21 | Q1833473002 | ND |
| 2018-11-14 | Q1846491001 | ND |
| 2019-05-14 | Q1925075001 | ND |
| 2019-08-19 | Q1956634012 | ND |
| 2020-09-23 | Q2037767001 | ND |
| 2020-11-10 | Q2044047001 | ND |
| 2021-02-03 | Q2103346004 | ND |
| 2021-08-16 | Q2121825003 | ND |
| 2022-08-17 | Q2224340018 | ND |
| 2022-08-17 | Q2224340023 | ND |
| 2023-08-21 | Q2335127007 | ND |
| 2023-08-21 | Q2335127009 | ND |