o-Dichlorobenzene
Napoleon City
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-02-06 | 14-11584-04 | ND |
2015-01-08 | 15-10356-04A | ND |
2016-01-07 | 16-10465-07 | ND |
2017-01-05 | 17-10458-01B | ND |
2018-01-03 | 18-10422-04B | ND |
2018-02-01 | 18-11960-03B | ND |
2018-04-05 | 18-16341-01C | ND |
2018-07-05 | 18-23761-01 | ND |
2018-10-03 | 18-31948-04 | ND |
2019-01-03 | 19-10388-03B | ND |