1,2,4-Trichlorobenzene
Southern Madison Utilities LLC
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 | 3 | 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 |
|---|---|---|
| 2018-02-13 | 2018021262ARV-1801 | ND |
| 2018-05-15 | 18071702RV-1802 | ND |
| 2018-11-01 | 18184316RV-1804 | ND |
| 2019-02-12 | 19025216 | ND |
| 2019-05-14 | 19092611RV-1902 | ND |
| 2019-08-13 | 191684RV-1903 | ND |
| 2019-11-01 | 19239119 | ND |
| 2020-02-10 | 20027919 | ND |
| 2020-05-12 | 200900-10 | ND |
| 2020-08-11 | 201579-07V | ND |
| 2020-12-29 | 202503-19V | ND |
| 2021-02-09 | 210245-19V | ND |
| 2021-05-11 | 210836-08V | ND |
| 2021-08-10 | 211507-10V | ND |
| 2021-11-09 | 212215-19V | ND |
| 2022-02-01 | 220195-19V | ND |
| 2022-05-10 | 220873-04 | ND |
| 2022-08-09 | 221594-19V | ND |
| 2022-11-01 | 222249-19V | ND |
| 2023-02-14 | 230294-10V | ND |
| 2023-05-09 | 230927-07V | ND |
| 2023-08-15 | 231719-08V | ND |
| 2023-11-14 | 232401-18V | ND |