o-Dichlorobenzene
City of Hallsville
NOTE: City of Hallsville purchases water from City of Longview which is required to test for o-dichlorobenzene. Sample information shown below was taken by City of Longview.
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 | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 3 | 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
NOTE: City of Hallsville purchases water from City of Longview which is required to test for o-dichlorobenzene. Sample information shown below was taken by City of Longview.
Date | Lab ID | Result |
---|---|---|
2014-08-01 | Q1433243014 | ND |
2014-08-01 | Q1433243011 | ND |
2014-08-01 | Q1433243009 | ND |
2015-09-18 | Q1536731004 | ND |
2015-09-18 | Q1536731006 | ND |
2015-09-18 | Q1536731002 | ND |
2016-09-02 | Q1635387001 | ND |
2016-09-02 | Q1635387006 | ND |
2016-09-02 | Q1635387004 | ND |
2017-08-18 | Q1737139010 | ND |
2017-08-18 | Q1737139007 | ND |
2017-08-18 | Q1737139002 | ND |
2018-08-21 | Q1833337013 | ND |
2018-08-21 | Q1833337003 | ND |
2018-08-21 | Q1833337012 | ND |
2019-08-08 | Q1952474001 | ND |
2019-08-08 | Q1952474005 | ND |
2019-08-08 | Q1952474003 | ND |