o-Dichlorobenzene
Dayton Valley Water System
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 | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 8 | 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 |
---|---|---|
2014-05-13 | 1405260-007 | ND |
2014-05-13 | 1405260-006 | ND |
2015-05-26 | 1505605-001 | ND |
2015-05-26 | 1505605-002 | ND |
2016-04-20 | 1604512-002 | ND |
2016-05-18 | 201605240202 | ND |
2016-08-23 | 6H25005-01 | ND |
2016-08-23 | 6H25005-02 | ND |
2017-05-10 | 201705130308 | ND |
2017-05-10 | 201705130310 | ND |
2018-05-16 | 1805551-002 | ND |
2018-05-16 | 1805551-001 | ND |
2019-04-02 | 19040080-001 | ND |
2019-05-20 | 19050593-001 | ND |
2019-05-20 | 19050593-001VOC | ND |
2019-06-27 | 19060931-001 | ND |
2019-06-27 | 19060933-001 | ND |
2019-06-27 | 19060933-002 | ND |
2019-08-14 | 19080524-001 | ND |
2019-10-31 | 19101057-001 | ND |