1,2,4-Trichlorobenzene
East Alton
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 |
|---|---|---|
| 2018-01-16 | 8013018-01 | ND |
| 2018-04-03 | 8041291-01 | ND |
| 2018-08-28 | 8085787-01 | ND |
| 2018-10-22 | 8105047-01 | ND |
| 2019-01-22 | 9014063-01 | ND |
| 2019-04-29 | 9050017-01 | ND |
| 2019-07-24 | 9075426-01 | ND |
| 2019-10-22 | 9105187-01 | ND |
| 2020-01-07 | 0011946-01 | ND |
| 2020-04-29 | 0050025-01 | ND |
| 2020-08-24 | 0085846-01 | ND |
| 2020-10-06 | 0101784-01 | ND |
| 2021-01-25 | EA04364-01 | ND |
| 2021-04-20 | ED04366-01 | ND |
| 2021-07-20 | EG04577-01 | ND |
| 2021-10-26 | EJ05305-01 | ND |
| 2022-01-11 | FA02423-01 | ND |
| 2022-04-19 | FD03918-01 | ND |
| 2022-08-01 | FH00772-01 | ND |
| 2022-10-25 | FJ04962-01 | ND |
| 2023-01-23 | GA04262-01 | ND |
| 2023-04-25 | GD04539-01 | ND |
| 2023-07-31 | GH00321-01 | ND |
| 2023-10-17 | GJ03547-01 | ND |