1,2,4-Trichlorobenzene
Paw Glen Alsace Div
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 | 7 | 0 | ND |
| 2020 | ND | 12 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 15 | 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 | 38538801 | ND |
| 2018-02-13 | 38539501 | ND |
| 2018-02-13 | 38539201 | ND |
| 2019-02-06 | 42853101 | ND |
| 2019-02-06 | 42853301 | ND |
| 2019-02-06 | 42853201 | ND |
| 2019-07-22 | 45717501 | ND |
| 2019-07-22 | 45717601 | ND |
| 2019-07-22 | 45717401 | ND |
| 2019-07-29 | 46133302 | ND |
| 2020-02-10 | 21708719.00 | ND |
| 2020-02-10 | 21708698.00 | ND |
| 2020-02-10 | 21708677.00 | ND |
| 2020-02-10 | 21708764.00 | ND |
| 2020-02-10 | 21708785.00 | ND |
| 2020-02-11 | 21708743.00 | ND |
| 2020-02-11 | 21708614.00 | ND |
| 2020-02-11 | 21708635.00 | ND |
| 2020-02-11 | 21708656.00 | ND |
| 2020-02-17 | 21708830.00 | ND |
| 2020-02-17 | 21708809.00 | ND |
| 2020-02-17 | 21708851.00 | ND |
| 2021-02-10 | 23928436.00 | ND |
| 2021-02-10 | 23928415.00 | ND |
| 2021-02-10 | 23928457.00 | ND |
| 2022-02-10 | 26157277.00 | ND |
| 2022-02-10 | 26157310.00 | ND |
| 2022-02-10 | 26157258.00 | ND |
| 2023-02-09 | 28389645.00 | ND |
| 2023-02-09 | 28389577.00 | ND |
| 2023-02-09 | 28389621.00 | ND |
| 2023-02-09 | 28389556.00 | ND |
| 2023-02-09 | 28389598.00 | ND |
| 2023-02-09 | 28389493.00 | ND |
| 2023-02-09 | 28389472.00 | ND |
| 2023-02-09 | 28389430.00 | ND |
| 2023-02-09 | 28389535.00 | ND |
| 2023-02-09 | 28389650.00 | ND |
| 2023-02-09 | 28389514.00 | ND |
| 2023-02-09 | 28389451.00 | ND |
| 2023-04-10 | 28750985.00 | ND |
| 2023-07-11 | 29348352.00 | ND |
| 2023-10-09 | 29929559.00 | ND |