1,2,4-Trichlorobenzene
Marshall County Water Corp
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 | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-03-11 | 4C11070-01 | ND |
| 2014-11-17 | 4K18077-01 | ND |
| 2015-05-12 | 5E12134-01 | ND |
| 2016-02-06 | 6B09096-01RE1 | ND |
| 2016-05-10 | 6E10113-01 | ND |
| 2016-08-09 | 6H09198-01 | ND |
| 2016-10-11 | 6J11115-01 | ND |
| 2017-03-14 | 7C14157-01 | ND |
| 2017-04-11 | 7D11140-01 | ND |
| 2017-08-08 | 7H08163-01 | ND |
| 2018-01-09 | 8A09122-01 | ND |
| 2019-05-14 | BE14124-01 | ND |