1,2,4-Trichlorobenzene
State College Boro Water Auth.
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 8 | 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 |
|---|---|---|
| 2018-02-14 | 8B14177-01 | ND |
| 2019-02-12 | 9B12139-01 | ND |
| 2020-02-12 | 21735594.00 | ND |
| 2020-02-12 | 21735593.00 | ND |
| 2020-02-12 | 21735592.00 | ND |
| 2020-02-12 | 21735591.00 | ND |
| 2020-02-12 | 21735590.00 | ND |
| 2021-02-16 | 23953990.00 | ND |
| 2021-04-07 | 24321964.00 | ND |
| 2021-08-16 | 25098831.00 | ND |
| 2021-09-13 | 25291234.00 | ND |
| 2021-11-15 | 25654880.00 | ND |
| 2022-02-15 | 26182280.00 | ND |
| 2022-09-01 | 27520783.00 | ND |
| 2022-11-16 | 27890860.00 | ND |
| 2023-02-14 | 28415050.00 | ND |
| 2023-05-16 | 28981571.00 | ND |
| 2023-08-14 | 29577810.00 | ND |
| 2023-11-13 | 30139892.00 | ND |
| 2023-12-20 | 30314230.00 | ND |
| 2023-12-20 | 30314293.00 | ND |
| 2023-12-20 | 30314251.00 | ND |
| 2023-12-20 | 30314272.00 | ND |