1,2,4-Trichlorobenzene
Aqua Pa Yalick Farms
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | 0.267 ppb | 3 | 1 | ND - 0.800 ppb |
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 |
|---|---|---|
| 2018-09-26 | AF96998 | ND |
| 2019-06-18 | AG21341 | ND |
| 2020-06-25 | 22435185.00 | ND |
| 2021-10-14 | 25423308.00 | ND |
| 2022-07-27 | 27253668.00 | ND |
| 2022-07-27 | 27056195.00 | ND |
| 2023-05-09 | 28920359.00 | 0.800 ppb |
| 2023-09-21 | 29718047.00 | ND |
| 2023-11-14 | 30088637.00 | ND |