o-Dichlorobenzene
City of Frederick
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 | 3 | 0 | ND |
2017 | ND | 2 | 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 |
---|---|---|
2014-05-01 | 0100015_01_04859 | ND |
2014-05-01 | 0100015_02_04859 | ND |
2014-06-23 | 0100015_03_05545 | ND |
2015-04-08 | E15003180001 | ND |
2015-04-08 | E15003180004 | ND |
2015-04-08 | E15003180006 | ND |
2016-04-25 | E16003991004 | ND |
2016-04-25 | E16003990001 | ND |
2016-04-25 | E16003991001 | ND |
2017-04-04 | E17003903001 | ND |
2017-04-05 | E17003943001 | ND |
2018-05-09 | E18004058006 | ND |
2018-05-09 | E18004058001 | ND |
2019-04-04 | E19003305001 | ND |
2019-04-04 | E19003305004 | ND |