o-Dichlorobenzene
La Canada Irrigation 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 | 3 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 6 | 0 | ND |
2017 | ND | 1 | 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 |
---|---|---|
2014-03-17 | 3761-002-0955 | ND |
2014-03-17 | 3761-001-0925 | ND |
2014-12-15 | 3761-003-1045 | ND |
2015-03-16 | 3761-001-0930 | ND |
2015-03-16 | 3761-002-1100 | ND |
2015-12-07 | 3761-003-1045 | ND |
2016-03-07 | 3761-001-1005 | ND |
2016-03-21 | 3761-002-1000 | ND |
2016-04-18 | 3761-002-1020 | ND |
2016-06-06 | 3761-002-1100 | ND |
2016-06-20 | 3761-003-1140 | ND |
2016-12-12 | 3761-003-1015 | ND |
2017-03-13 | 3761-001-0915 | ND |
2018-03-12 | 3761-001-0915 | ND |
2018-03-26 | 3761-003-1100 | ND |
2019-03-18 | 3761-001-1030 | ND |
2019-03-31 | 3761-003-0930 | ND |