o-Dichlorobenzene
Alton Water Works
o-Dichlorobenzene is used as a chemical intermediate for making agricultural herbicides. It is toxic to the liver, kidneys and the nervous system, and causes cancer in animal studies.
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 600 ppb
The EWG Health Guideline of 600 ppb for o-dichlorobenzene 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 harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 600 ppb
The legal limit for o-dichlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1970s.
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 |