o-Dichlorobenzene
Walnut Park Mutual Water Company
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 | 3 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 3 | 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 |
---|---|---|
2014-01-24 | 9588-003-0940 | ND |
2014-04-11 | 9588-004-0930 | ND |
2014-12-16 | 9588-008-1017 | ND |
2015-01-30 | 9588-003-0919 | ND |
2015-04-22 | 9588-004-1003 | ND |
2015-10-21 | 9588-008-0950 | ND |
2016-01-20 | 9588-003-0945 | ND |
2016-06-22 | 9588-004-0950 | ND |
2016-10-19 | 9588-008-0000 | ND |
2017-01-18 | 9588-003-1005 | ND |
2017-04-20 | 9588-004-0940 | ND |
2017-10-17 | 9588-008-0749 | ND |
2018-01-16 | 9588-003-0754 | ND |
2018-04-17 | 9588-004-0709 | ND |
2018-12-18 | 9588-008-0800 | ND |
2019-01-24 | 9588-008-0839 | ND |
2019-01-24 | 9588-003-0750 | ND |
2019-04-23 | 9588-004-0850 | ND |