1,2,4-Trichlorobenzene
Aqua Pa West Chester
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 | 3 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-29 | AF74444 | ND |
| 2018-02-22 | AF77012 | ND |
| 2018-03-22 | AF78070 | ND |
| 2019-03-06 | AG10280 | ND |
| 2019-03-06 | AG10262 | ND |
| 2019-03-06 | AG10272 | ND |
| 2019-03-07 | AG10725 | ND |
| 2020-03-10 | 21839016.00 | ND |
| 2020-03-11 | 21838995.00 | ND |
| 2020-04-02 | 22014451.00 | ND |
| 2021-02-10 | 23881854.00 | ND |
| 2021-02-10 | 23881875.00 | ND |
| 2021-02-10 | 23881896.00 | ND |
| 2022-01-28 | 25934686.00 | ND |
| 2022-02-24 | 26110774.00 | ND |
| 2022-03-28 | 26280751.00 | ND |
| 2023-03-28 | 28514084.00 | ND |