o-Dichlorobenzene
City of San Luis
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 | 2 | 0 | ND |
2015 | ND | 6 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 6 | 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 |
---|---|---|
2014-02-13 | 479280-003-2 | ND |
2014-02-13 | 479280-003-1 | ND |
2015-05-20 | 508161-07D | ND |
2015-05-20 | 508161-07C | ND |
2015-05-20 | 508161-07B | ND |
2015-05-20 | 508161-07A | ND |
2015-05-20 | 508161-008B | ND |
2015-05-20 | 508161-008A | ND |
2016-05-23 | 530530-002 | ND |
2016-05-23 | 530530-001 | ND |
2017-06-05 | 554618-002 | ND |
2017-06-05 | 554618-001 | ND |
2018-03-27 | 201803280588V | ND |
2018-03-27 | 201803280599V | ND |
2018-03-27 | 201803280598V | ND |
2018-03-27 | 201803280597V | ND |
2018-03-27 | 201803280596V | ND |
2018-03-27 | 201803280589V | ND |