1,2,4-Trichlorobenzene
Ruston 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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 12 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 10 | 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 |
|---|---|---|
| 2020-01-07 | 35523111001 | ND |
| 2020-01-13 | 35524733008 | ND |
| 2020-01-13 | 35524733001 | ND |
| 2020-01-13 | 35524733002 | ND |
| 2020-01-13 | 35524733003 | ND |
| 2020-01-13 | 35524733004 | ND |
| 2020-01-13 | 35524733005 | ND |
| 2020-01-13 | 35524733006 | ND |
| 2020-01-13 | 35524733007 | ND |
| 2020-06-22 | 35558556001 | ND |
| 2020-06-22 | 35558556002 | ND |
| 2020-12-08 | 35597801001 | ND |
| 2023-02-27 | 35782669001 | ND |
| 2023-02-27 | 35782669002 | ND |
| 2023-02-27 | 35782669003 | ND |
| 2023-02-27 | 35782669004 | ND |
| 2023-02-27 | 35782669005 | ND |
| 2023-03-06 | 35784479001 | ND |
| 2023-03-06 | 35784479002 | ND |
| 2023-03-06 | 35784479003 | ND |
| 2023-03-06 | 35784479004 | ND |
| 2023-03-06 | 35784479005 | ND |