o-Dichlorobenzene
St John Water District 1
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 | 2 | 0 | ND |
2015 | ND | 2 | 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 |
---|---|---|
2014-01-22 | AD88499 | ND |
2014-01-22 | AD88499 | ND |
2015-04-06 | 35182606003 | ND |
2015-04-06 | 35182606003 | ND |
2016-02-23 | 35231304005 | ND |
2016-02-23 | 35231304005 | ND |
2017-01-25 | 35291206002 | ND |
2017-01-25 | 35291206002 | ND |
2018-01-23 | 35370117004 | ND |
2018-01-23 | 35370117004 | ND |
2019-01-22 | 35444040001 | ND |
2019-01-22 | 35444040001 | ND |