o-Dichlorobenzene
Hopkinton Village Pct
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 | 2 | 0 | ND |
2016 | ND | 2 | 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 |
---|---|---|
2014-01-14 | 128143.01 | ND |
2014-07-14 | 133582.01 | ND |
2015-01-06 | 139510.01 | ND |
2015-07-15 | 145709.01 | ND |
2016-02-16 | 153072.01 | ND |
2016-07-19 | 158430.01 | ND |
2017-01-18 | 164861.01 | ND |
2017-07-05 | 170585.01 | ND |
2018-02-08 | 178617.01 | ND |
2018-07-11 | 184146.01 | ND |
2019-01-09 | 191029.01 | ND |
2019-09-03 | 199877.01 | ND |