o-Dichlorobenzene
Hawthorne Water Department
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 | 1 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2014-02-19 | 5701-004-0910 | ND |
2014-05-21 | 5701-004-1110 | ND |
2015-05-27 | 5701-004-1106 | ND |
2016-05-18 | 5701-004-0945 | ND |
2016-07-13 | 9590-008-0915 | ND |
2017-01-18 | 5701-004-1030 | ND |
2017-07-31 | 5701-004-1140 | ND |
2017-10-18 | 5701-004-1030 | ND |
2018-01-24 | 5701-004-0840 | ND |
2018-04-18 | 5810-004-0930 | ND |
2018-07-26 | 5701-004-0900 | ND |
2018-10-17 | 9590-004-1055 | ND |
2019-01-23 | 9590-004-1055 | ND |
2019-04-17 | 5701-004-1120 | ND |
2019-07-17 | 5701-004-1315 | ND |
2019-10-16 | 5701-004-1110 | ND |