1,2,4-Trichlorobenzene
Mcconnellsburg Borough 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 |
|---|---|---|
| 2018-03-28 | (102) HORTON | ND |
| 2018-10-17 | (101) RESERV | ND |
| 2018-10-17 | (104) SECRES | ND |
| 2018-10-17 | (105) SECRES | ND |
| 2019-07-17 | (102) HORTON | ND |
| 2019-07-17 | (104) SECRES | ND |
| 2019-07-17 | (105) SECRES | ND |
| 2019-07-17 | (101) RESERV | ND |
| 2020-06-17 | 22494976.00 | ND |
| 2020-06-17 | 22494975.00 | ND |
| 2020-06-17 | 22494974.00 | ND |
| 2020-07-22 | 22685939.00 | ND |
| 2021-07-07 | 24907825.00 | ND |
| 2021-07-07 | 24907824.00 | ND |
| 2021-07-07 | 24907826.00 | ND |
| 2021-07-07 | 24907827.00 | ND |
| 2022-06-06 | 26923261.00 | ND |
| 2022-06-06 | 26923262.00 | ND |
| 2022-06-06 | 26923260.00 | ND |
| 2022-06-06 | 26923263.00 | ND |
| 2023-06-15 | 29190957.00 | ND |
| 2023-06-15 | 29190977.00 | ND |
| 2023-06-15 | 29191085.00 | ND |
| 2023-08-16 | 29582850.00 | ND |