o-Dichlorobenzene
Hartford Waterworks
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 | 5 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2014-03-18 | 775375 | ND |
2014-03-18 | 775372 | ND |
2014-03-18 | 775378 | ND |
2014-03-18 | 775381 | ND |
2014-03-18 | 775384 | ND |
2015-01-28 | 840841 | ND |
2016-04-05 | 913985 | ND |
2017-03-21 | 978876 | ND |
2017-03-21 | 978867 | ND |
2017-03-21 | 978879 | ND |
2017-03-21 | 978873 | ND |
2017-03-21 | 978870 | ND |
2018-02-13 | 1040931 | ND |