1,2,4-Trichlorobenzene
Wellsburg, City Of
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2019-08-19 | M19-28116-03 | ND |
| 2019-09-30 | 468016 | ND |
| 2020-03-03 | M20-14668-01 | ND |
| 2020-03-03 | M20-14668-01 | ND |
| 2020-04-09 | M20-17650-01 | ND |
| 2020-08-05 | M20-27568-01 | ND |
| 2020-11-05 | M20-35836-01 | ND |
| 2021-03-15 | M21-15500-01 | ND |
| 2021-05-24 | M21-20987-01 | ND |
| 2021-08-05 | M21-28224-01 | ND |
| 2021-11-16 | M21-37604-01 | ND |
| 2022-02-24 | M22-14528-01 | ND |
| 2022-05-03 | M22-20781-01 | ND |
| 2022-08-10 | M22-31283-01 | ND |
| 2022-11-30 | 2208835-01 | ND |
| 2023-02-13 | 2305102-01 | ND |
| 2023-06-07 | 2319754-01 | ND |
| 2023-09-06 | 2333450-01 | ND |
| 2023-10-11 | 2338475-01 | ND |
| 2023-11-29 | 2344286-01 | ND |