o-Dichlorobenzene
Cypress Hill Municipal Utility District 1
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 | N/A | 0 | 0 | N/A |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 5 | 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 |
---|---|---|
2015-05-05 | AC90540 | ND |
2016-11-17 | AD58591 | ND |
2017-01-26 | AD67167 | ND |
2017-01-26 | AD67209 | ND |
2017-04-18 | AD79972 | ND |
2017-07-25 | AD90601 | ND |
2017-12-13 | AE07656 | ND |
2018-08-13 | AE36654 | ND |
2018-08-13 | AE36662 | ND |
2019-11-06 | AE88717 | ND |
2019-11-06 | AE88715 | ND |