1,2,4-Trichlorobenzene
Schuylkill County. Municipal 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 | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-07-17 | 8020362-01 | ND |
| 2018-07-17 | 8020365-01 | ND |
| 2018-07-17 | 8020364-01 | ND |
| 2018-07-17 | 8020366-01 | ND |
| 2019-07-16 | 9024930-02 | ND |
| 2019-07-16 | 9024930-03 | ND |
| 2019-07-16 | 9024930-04 | ND |
| 2019-07-16 | 9024930-01RE | ND |
| 2020-07-13 | 22671291.00 | ND |
| 2020-07-13 | 22671270.00 | ND |
| 2020-07-13 | 22671249.00 | ND |
| 2020-07-13 | 22671228.00 | ND |
| 2021-07-13 | 24892771.00 | ND |
| 2021-07-13 | 24892792.00 | ND |
| 2021-07-13 | 24892813.00 | ND |
| 2021-07-13 | 24892834.00 | ND |
| 2022-07-13 | 27102614.00 | ND |
| 2022-07-13 | 27102615.00 | ND |
| 2022-07-13 | 27102613.00 | ND |
| 2022-07-13 | 27102616.00 | ND |
| 2023-07-12 | 29366482.00 | ND |
| 2023-07-12 | 29366483.00 | ND |
| 2023-07-12 | 29366484.00 | ND |
| 2023-07-12 | 29366481.00 | ND |