o-Dichlorobenzene
Bullock Pen Water District
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 | 4 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2014-03-17 | 4032041-01 | ND |
2014-04-21 | 4042445-01 | ND |
2014-07-21 | 4071373-01 | ND |
2014-10-20 | 4102341-01 | ND |
2015-02-23 | 5022560-01 | ND |
2015-04-20 | 5042963-01 | ND |
2015-07-20 | 5073210-01 | ND |
2015-10-19 | 5102696-01 | ND |
2016-01-18 | 6012574-01 | ND |
2016-04-18 | 6042551-01 | ND |
2016-07-18 | 6072775-01 | ND |
2016-12-19 | 6122584-01 | ND |
2017-10-16 | 7100166-01 | ND |
2018-10-15 | 8100228-01 | ND |
2019-10-21 | 9103477-01 | ND |