1,2,4-Trichlorobenzene
Municipal Authority Sunbury
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 | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-02-14 | 8B15039-03 | ND |
| 2018-04-18 | 8D19042-03 | ND |
| 2018-07-12 | 8G13125-03 | ND |
| 2018-10-31 | 8033399-01 | ND |
| 2019-04-17 | 9D22038-01 | ND |
| 2019-10-16 | 9J18018-01 | ND |
| 2021-02-23 | 23964314.00 | ND |
| 2021-05-12 | 24528452.00 | ND |
| 2021-07-14 | 24915357.00 | ND |
| 2022-07-13 | 27125956.00 | ND |
| 2022-09-14 | 27533434.00 | ND |
| 2022-12-30 | 28078786.00 | ND |
| 2023-03-15 | 28604336.00 | ND |
| 2023-09-05 | 29784917.00 | ND |
| 2023-09-05 | 29784918.00 | ND |