o-Dichlorobenzene
Hydro Public Works Authority
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 | 8 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-01-23 | 039216.001 | ND |
2015-01-20 | 052796.001 | ND |
2015-09-18 | 063290.007 | ND |
2015-09-18 | 063290.006 | ND |
2015-09-18 | 063290.005 | ND |
2015-09-18 | 063290.004 | ND |
2015-09-18 | 063290.003 | ND |
2015-09-18 | 063290.002 | ND |
2015-09-18 | 063290.001 | ND |
2016-07-08 | SDWA-1044817-00 | ND |
2016-07-08 | SDWA-1044835-00 | ND |
2016-07-08 | SDWA-1044823-00 | ND |
2016-07-08 | SDWA-1044811-00 | ND |
2016-07-08 | SDWA-1044798-00 | ND |
2017-05-08 | SDWA-1144632-00 | ND |
2017-05-08 | SDWA-1144624-00 | ND |
2017-05-08 | SDWA-1144615-03 | ND |
2017-06-29 | SDWA-1168943-00 | ND |
2017-06-29 | SDWA-1168942-00 | ND |
2018-02-09 | SDWA-1237518-00 | ND |
2018-02-09 | SDWA-1237541-00 | ND |
2018-02-09 | SDWA-1237535-00 | ND |
2018-02-09 | SDWA-1237529-00 | ND |
2018-02-09 | SDWA-1237523-00 | ND |