1,2,4-Trichlorobenzene
Hibbing
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 |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-01-21 | 14A0762-01 | ND |
| 2014-12-10 | 14L0519-01 | ND |
| 2014-12-10 | 14L0519-02 | ND |
| 2016-03-07 | 16C0397-01 | ND |
| 2016-03-07 | 16C0398-01 | ND |
| 2016-03-07 | 16C0399-01 | ND |
| 2017-09-19 | 17I0942-01 | ND |
| 2017-09-19 | 17I0942-02 | ND |
| 2018-03-20 | 18C0858-01 | ND |
| 2018-06-11 | 18F0733-01 | ND |
| 2019-06-20 | 19F1477-01 | ND |
| 2019-06-20 | 19F1480-01 | ND |