1,2,4-Trichlorobenzene
Big Eddy
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 | 2 | 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 |
|---|---|---|
| 2018-08-01 | Q1830497002 | ND |
| 2018-08-01 | Q1830497003 | ND |
| 2019-07-16 | Q1945273001 | ND |
| 2019-11-06 | Q1975670001 | ND |
| 2020-03-18 | Q2012014008 | ND |
| 2020-03-18 | Q2012014010 | ND |
| 2020-06-29 | Q2025922001 | ND |
| 2021-08-16 | Q2121819003 | ND |
| 2021-08-16 | Q2121819005 | ND |
| 2022-07-26 | Q2221158001 | ND |
| 2022-10-21 | Q2232015001 | ND |
| 2023-05-11 | Q2318027003 | ND |
| 2023-05-11 | Q2318027005 | ND |