1,2,4-Trichlorobenzene
N Walpole Village District/low
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 | 9 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2018-01-09 | 118010501.01 | ND |
| 2018-03-06 | 118030514.01 | ND |
| 2018-04-11 | 118041218.01 | ND |
| 2018-05-08 | 118051007.01 | ND |
| 2018-07-10 | 118070915.01 | ND |
| 2018-07-10 | 118070915.02 | ND |
| 2018-09-05 | 118090432.01 | ND |
| 2018-11-05 | 118110574.01 | ND |
| 2018-11-06 | 118110570.01 | ND |
| 2019-03-04 | 119030357.01 | ND |
| 2019-03-05 | 119030358.01 | ND |
| 2019-04-02 | 119040308.01 | ND |