1,2,4-Trichlorobenzene
City of Frost
NOTE: City of Frost purchases water from City of Corsicana which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by City of Corsicana.
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 | 3 | 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: City of Frost purchases water from City of Corsicana which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by City of Corsicana.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-17 | Q1828588001 | ND |
| 2018-07-17 | Q1828588004 | ND |
| 2019-07-29 | Q1948665001 | ND |
| 2019-09-24 | Q1968203001 | ND |
| 2020-09-16 | Q2037149001 | ND |
| 2020-09-24 | Q2037862001 | ND |
| 2021-07-14 | Q2118452001 | ND |
| 2021-09-16 | Q2125446001 | ND |
| 2022-08-23 | Q2224990001 | ND |
| 2022-08-23 | Q2224990003 | ND |
| 2023-07-31 | Q2330841001 | ND |
| 2023-07-31 | Q2330841003 | ND |