1,2,4-Trichlorobenzene
Rose Creek
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 | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-02-06 | 18B0292-01 | ND |
| 2018-06-26 | 18F2035-01 | ND |
| 2018-09-27 | 18I1479-01 | ND |
| 2018-10-30 | 18J1557-01 | ND |
| 2019-03-27 | 19C1219-01 | ND |
| 2020-11-16 | 20K0808-01 | ND |
| 2021-07-28 | 21G2036-01 | ND |
| 2021-07-28 | 21G2048-01 | ND |
| 2021-10-06 | 21J0293-01 | ND |
| 2022-01-31 | 22B0065-01 | ND |
| 2022-06-01 | 22F0111-01 | ND |
| 2022-08-01 | 22H0095-01 | ND |
| 2022-10-18 | 22J0781-01 | ND |
| 2023-09-12 | 23I0712-01 | ND |