1,2,4-Trichlorobenzene
Boone County Cons. PWSD1
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 13 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 13 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2015-02-19 | AC42735 | ND |
| 2015-02-19 | AC42730 | ND |
| 2015-02-19 | AC42731 | ND |
| 2015-02-19 | AC42727 | ND |
| 2015-02-19 | AC42734 | ND |
| 2015-02-19 | AC42728 | ND |
| 2015-02-19 | AC42729 | ND |
| 2015-02-19 | AC42736 | ND |
| 2015-02-19 | AC42737 | ND |
| 2015-02-19 | AC42738 | ND |
| 2015-02-19 | AC42739 | ND |
| 2015-02-19 | AC42733 | ND |
| 2015-02-19 | AC42732 | ND |
| 2018-03-07 | AD15027 | ND |
| 2018-03-07 | AD15039 | ND |
| 2018-03-07 | AD15037 | ND |
| 2018-03-07 | AD15036 | ND |
| 2018-03-07 | AD15035 | ND |
| 2018-03-07 | AD15034 | ND |
| 2018-03-07 | AD15038 | ND |
| 2018-03-07 | AD15032 | ND |
| 2018-03-07 | AD15031 | ND |
| 2018-03-07 | AD15030 | ND |
| 2018-03-07 | AD15029 | ND |
| 2018-03-07 | AD15028 | ND |
| 2018-05-30 | AD26983 | ND |