o-Dichlorobenzene
Cottonwood Municipal Water Cw1
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 | ND | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 1 | 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 |
---|---|---|
2014-01-16 | 201401170084V | ND |
2015-06-03 | 201506040076V | ND |
2016-04-06 | 201604070130V | ND |
2016-04-06 | 201604070131V | ND |
2017-03-14 | 201703150218V | ND |
2017-03-14 | 201703150222V | ND |
2017-05-23 | 201705240226V | ND |
2017-08-08 | 201708090339V | ND |
2017-11-20 | 201711210054V | ND |
2018-03-01 | 201803020575V | ND |
2018-05-16 | 201805170466V | ND |
2018-05-16 | 201805170467V | ND |
2018-05-16 | 201805170468V | ND |
2019-11-13 | 201911140251V | ND |