o-Dichlorobenzene
City of Toyah
NOTE: City of Toyah purchases water from City of Balmorhea which is required to test for o-dichlorobenzene. Sample information shown below was taken by City of Balmorhea.
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 | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 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
NOTE: City of Toyah purchases water from City of Balmorhea which is required to test for o-dichlorobenzene. Sample information shown below was taken by City of Balmorhea.
Date | Lab ID | Result |
---|---|---|
2015-08-12 | Q1531985003 | ND |
2016-08-09 | Q1633333006 | ND |
2017-09-11 | Q1743004001 | ND |
2018-09-19 | Q1837703006 | ND |
2019-08-13 | Q1954633002 | ND |