1,2,4-Trichlorobenzene
Farmerville Water System
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 | 14 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 11 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-04-25 | 35388787005 | ND |
| 2018-04-25 | 35388787001 | ND |
| 2018-04-25 | 35388787002 | ND |
| 2018-04-25 | 35388787003 | ND |
| 2018-04-25 | 35388787004 | ND |
| 2018-04-25 | 35388787005 | ND |
| 2018-04-25 | 35388787004 | ND |
| 2018-04-25 | 35388787003 | ND |
| 2018-04-25 | 35388787001 | ND |
| 2018-04-25 | 35388787002 | ND |
| 2018-05-15 | 35392914002 | ND |
| 2018-05-15 | 35392914002 | ND |
| 2018-05-15 | 35392914001 | ND |
| 2018-05-15 | 35392914001 | ND |
| 2021-05-19 | 35634912001 | ND |
| 2021-05-19 | 35634912002 | ND |
| 2021-05-19 | 35634912003 | ND |
| 2021-05-20 | 35635259001 | ND |
| 2021-05-20 | 35635259002 | ND |
| 2021-05-20 | 35635259003 | ND |
| 2021-05-20 | 35635259004 | ND |
| 2021-07-07 | 35648183001 | ND |
| 2021-07-07 | 35648183002 | ND |
| 2021-07-07 | 35648183003 | ND |
| 2021-07-07 | 35648183004 | ND |