o-Dichlorobenzene
Northwest Harris County MUD 5
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 | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 4 | 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 |
---|---|---|
2014-10-14 | AC69599 | ND |
2015-07-28 | AD01247 | ND |
2015-07-28 | AD01279 | ND |
2015-07-28 | AD01287 | ND |
2016-11-09 | AD57442 | ND |
2016-11-09 | AD57450 | ND |
2016-11-09 | AD57448 | ND |
2017-08-08 | AD92417 | ND |
2017-09-26 | AD98059 | ND |
2017-09-26 | AD98065 | ND |
2017-09-26 | AD98063 | ND |
2018-02-07 | AE12763 | ND |
2018-05-10 | AE25945 | ND |
2018-05-10 | AE25951 | ND |
2018-05-10 | AE25947 | ND |
2019-02-05 | AE52907 | ND |
2019-03-26 | AE59980 | ND |
2019-03-26 | AE59970 | ND |
2019-03-26 | AE59964 | ND |