o-Dichlorobenzene
City of Humble
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 | N/A | 0 | 0 | N/A |
2015 | ND | 5 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | ND | 5 | 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 |
---|---|---|
2015-01-20 | AC76796 | ND |
2015-01-20 | AC76784 | ND |
2015-01-20 | AC76780 | ND |
2015-01-20 | AC76800 | ND |
2015-01-20 | AC76798 | ND |
2016-01-21 | AD19313 | ND |
2016-01-21 | AD19307 | ND |
2016-01-21 | AD19315 | ND |
2016-01-21 | AD19317 | ND |
2016-01-21 | AD19309 | ND |
2017-01-05 | AD63235 | ND |
2017-01-05 | AD63231 | ND |
2017-01-05 | AD63233 | ND |
2017-01-05 | AD63263 | ND |
2017-04-21 | AD80683 | ND |
2018-01-19 | AE09579 | ND |
2018-01-19 | AE09595 | ND |
2018-01-19 | AE09539 | ND |
2018-04-03 | AE21021 | ND |
2018-04-03 | AE21019 | ND |
2019-01-15 | AE49863 | ND |
2019-01-15 | AE49877 | ND |
2019-01-15 | AE49873 | ND |
2019-01-15 | AE49879 | ND |
2019-01-15 | AE49853 | ND |