1,2,4-Trichlorobenzene
Alton Water Works
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 | 1 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 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 |
|---|---|---|
| 2014-03-24 | 129795.01 | ND |
| 2015-03-24 | 141475.01 | ND |
| 2015-04-02 | 141786.01 | ND |
| 2015-04-02 | 141787.01 | ND |
| 2016-03-17 | A153943.01 | ND |
| 2016-06-20 | 157373.01 | ND |
| 2017-03-02 | 166100.01 | ND |
| 2017-06-19 | 170033.01 | ND |
| 2018-03-25 | 179876.01 | ND |
| 2018-06-07 | 182788.01 | ND |
| 2019-03-05 | 192582.01 | ND |
| 2019-05-15 | 195473.01 | ND |