1,2,4-Trichlorobenzene
Sugar Mountain Utility
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 19 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 19 | 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 |
|---|---|---|
| 2020-02-11 | 7041-021120-OOXV | ND |
| 2020-02-11 | 7041-021120-OOVV | ND |
| 2020-02-11 | 7041A-021120-OOXV | ND |
| 2020-02-11 | 7041A-021120-OOVV | ND |
| 2020-10-28 | 7041-102820-OGHV | ND |
| 2020-10-28 | 7041-102820-OPQV | ND |
| 2020-10-28 | 7041-102820-OOTV | ND |
| 2020-10-28 | 7041-102820-OOSV | ND |
| 2020-10-28 | 7041-102820-OORV | ND |
| 2020-10-28 | 7041-102820-OONV | ND |
| 2020-10-28 | 7041-102820-OOIV | ND |
| 2020-10-28 | 7041-102820-OOFV | ND |
| 2020-10-28 | 7041-102820-OOEV | ND |
| 2020-10-28 | 7041-102820-OOBV | ND |
| 2020-10-28 | 7041-102820-OOAV | ND |
| 2020-10-28 | 7041-102820-OLMV | ND |
| 2020-10-28 | 7041-102820-OJKV | ND |
| 2020-12-09 | 7041-120920-OOCV | ND |
| 2020-12-09 | 7041-120920-OODV | ND |
| 2022-03-15 | 7041-031522-OOWV | ND |
| 2023-03-01 | 752-3748-3 | ND |
| 2023-03-01 | 752-3748-1 | ND |
| 2023-08-30 | 752-11120-1 | ND |
| 2023-10-17 | 752-12705-21 | ND |
| 2023-10-17 | 752-12705-9 | ND |
| 2023-10-17 | 752-12705-7 | ND |
| 2023-10-17 | 752-12705-5 | ND |
| 2023-10-17 | 752-12705-3 | ND |
| 2023-10-17 | 752-12705-29 | ND |
| 2023-10-17 | 752-12705-27 | ND |
| 2023-10-17 | 752-12705-25 | ND |
| 2023-10-17 | 752-12705-23 | ND |
| 2023-10-17 | 752-12705-19 | ND |
| 2023-10-17 | 752-12705-17 | ND |
| 2023-10-17 | 752-12705-15 | ND |
| 2023-10-17 | 752-12705-13 | ND |
| 2023-10-17 | 752-12705-11 | ND |
| 2023-10-17 | 752-12705-1 | ND |
| 2023-12-13 | 752-14694-1 | ND |