1,2,4-Trichlorobenzene
Kewaunee Waterworks
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 | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2018-03-12 | 1044904 | ND |
| 2018-03-13 | 1044907 | ND |
| 2019-07-15 | 1134743 | ND |
| 2019-07-16 | 1134746 | ND |
| 2020-05-11 | 1187271 | ND |
| 2020-05-12 | 1187645 | ND |
| 2020-05-12 | 1187648 | ND |
| 2021-05-25 | 1255866 | ND |
| 2021-06-15 | 1259381 | ND |
| 2022-07-12 | 1323032 | ND |
| 2022-07-19 | 1324612 | ND |
| 2023-05-16 | CB05118-03 | ND |
| 2023-05-22 | CB05349-03 | ND |
| 2023-05-22 | CB05349-06 | ND |