1,2,4-Trichlorobenzene
Bcwsa New Hope
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 |
|---|---|---|
| 2018-05-10 | 8043140-02 | ND |
| 2018-05-10 | 8043140-03 | ND |
| 2019-03-27 | 9002935-01 | ND |
| 2019-03-27 | 9002936-01 | ND |
| 2020-03-09 | 21833905.00 | ND |
| 2020-03-09 | 21833929.00 | ND |
| 2020-11-17 | 23350005.00 | ND |
| 2021-03-08 | 24046644.00 | ND |
| 2021-03-08 | 24046593.00 | ND |
| 2022-03-14 | 26275777.00 | ND |
| 2022-03-18 | 26275604.00 | ND |
| 2023-03-13 | 28688351.00 | ND |
| 2023-05-08 | 28885873.00 | ND |
| 2023-07-28 | 29289276.00 | ND |