1,2,4-Trichlorobenzene
Perkasie Regional Authority
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 | 7 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 7 | 0 | ND |
| 2022 | ND | 7 | 0 | ND |
| 2023 | ND | 7 | 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 |
|---|---|---|
| 2018-03-06 | 8024485-02 | ND |
| 2018-06-04 | 8052857-02 | ND |
| 2018-09-04 | 8084662-02 | ND |
| 2018-09-17 | 8093548-01 | ND |
| 2018-09-17 | 8093548-03 | ND |
| 2018-09-17 | 8093548-02 | ND |
| 2018-12-03 | 8110453-02RE | ND |
| 2019-03-05 | 9023322-02 | ND |
| 2019-06-04 | 9053891-02 | ND |
| 2019-09-03 | 9084135-02 | ND |
| 2019-11-11 | 9111441-02 | ND |
| 2019-11-11 | 9111441-03 | ND |
| 2019-11-11 | 9111441-01 | ND |
| 2019-12-03 | 9113323-02 | ND |
| 2020-03-03 | 21828155.00 | ND |
| 2020-06-23 | 22393758.00 | ND |
| 2020-09-01 | 22778492.00 | ND |
| 2020-09-01 | 22778450.00 | ND |
| 2020-09-01 | 22778471.00 | ND |
| 2020-12-01 | 23344550.00 | ND |
| 2021-03-02 | 24041332.00 | ND |
| 2021-06-01 | 24619512.00 | ND |
| 2021-09-20 | 25201396.00 | ND |
| 2021-09-20 | 25201438.00 | ND |
| 2021-09-20 | 25201417.00 | ND |
| 2021-09-20 | 25201459.00 | ND |
| 2021-12-07 | 25746101.00 | ND |
| 2022-03-01 | 26270330.00 | ND |
| 2022-06-21 | 26824202.00 | ND |
| 2022-08-16 | 27213694.00 | ND |
| 2022-08-16 | 27213742.00 | ND |
| 2022-08-16 | 27213719.00 | ND |
| 2022-09-19 | 27420614.00 | ND |
| 2022-12-06 | 27980826.00 | ND |
| 2023-03-07 | 28503183.00 | ND |
| 2023-06-06 | 29088270.00 | ND |
| 2023-09-05 | 29681584.00 | ND |
| 2023-09-19 | 29681587.00 | ND |
| 2023-09-19 | 29681586.00 | ND |
| 2023-09-19 | 29681585.00 | ND |
| 2023-12-05 | 30228240.00 | ND |