o-Dichlorobenzene
Langham Creek Utility 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 | 1 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-07-30 | AC61537 | ND |
2015-08-11 | AD03610 | ND |
2015-08-11 | AD03608 | ND |
2016-02-19 | AD24790 | ND |
2016-02-19 | AD24786 | ND |
2016-05-17 | AD37055 | ND |
2016-09-14 | AD49889 | ND |
2016-12-05 | AD60692 | ND |
2017-05-11 | AD84007 | ND |
2017-05-11 | AD83995 | ND |
2017-05-11 | AD84005 | ND |
2018-01-22 | AE09561 | ND |
2018-01-22 | AE09537 | ND |
2019-02-19 | AE54858 | ND |
2019-12-03 | AE91055 | ND |