1,2,4-Trichlorobenzene
Slippery Rock 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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2018-03-15 | 8031469-01 | ND |
| 2018-12-12 | 18L1061-01 | ND |
| 2019-04-18 | 19D2058-01 | ND |
| 2019-12-26 | 19L2329-01 | ND |
| 2020-04-09 | 22126508.00 | ND |
| 2020-04-09 | 22126529.00 | ND |
| 2021-10-21 | 25505055.00 | ND |
| 2022-08-18 | 27347040.00 | ND |
| 2023-04-13 | 28810149.00 | ND |
| 2023-04-13 | 28810170.00 | ND |
| 2023-12-21 | 30340073.00 | ND |
| 2023-12-21 | 30340094.00 | ND |