1,2,4-Trichlorobenzene
Ivanhoe Land of Lakes
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 | 5 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2018-02-20 | AE14475 | ND |
| 2018-06-04 | AE28553 | ND |
| 2018-06-21 | AE30995 | ND |
| 2018-09-25 | AE41526 | ND |
| 2018-12-03 | AE47614 | ND |
| 2019-03-05 | AE57132 | ND |
| 2019-03-05 | AE57136 | ND |
| 2019-03-05 | AE57138 | ND |
| 2019-05-22 | AE67705 | ND |
| 2019-08-14 | AE78672 | ND |
| 2020-02-20 | AE99301 | ND |
| 2020-06-29 | AF17290 | ND |
| 2020-06-29 | AF17292 | ND |
| 2021-08-18 | AF66896 | ND |
| 2022-10-20 | AG17828 | ND |
| 2023-07-31 | AG50606 | ND |
| 2023-07-31 | AG50612 | ND |