o-Dichlorobenzene
Portsmouth Water & Fire District
NOTE: Portsmouth Water & Fire District purchases water from City of Newport which is required to test for o-dichlorobenzene. Sample information shown below was taken by City of Newport.
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 | 8 | 0 | ND |
2015 | ND | 8 | 0 | ND |
2016 | ND | 8 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 8 | 0 | ND |
2019 | ND | 8 | 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: Portsmouth Water & Fire District purchases water from City of Newport which is required to test for o-dichlorobenzene. Sample information shown below was taken by City of Newport.
Date | Lab ID | Result |
---|---|---|
2014-01-06 | 1401012-03_TO12 | ND |
2014-01-06 | 1401012-08_TO12 | ND |
2014-05-21 | 1402793-06_TO12 | ND |
2014-05-21 | 1402793-05_TO12 | ND |
2014-07-02 | 1403537-01_TO12 | ND |
2014-07-02 | 1403537-05_TO12 | ND |
2014-07-02 | 1403537-04_TO12 | ND |
2014-07-02 | 1403537-03_TO12 | ND |
2015-01-12 | 1501069-08_TO12 | ND |
2015-01-12 | 1501069-03_TO12 | ND |
2015-06-01 | 1502384-01_TO12 | ND |
2015-06-01 | 1502384-02_TO12 | ND |
2015-07-20 | 1503232-04_TO12 | ND |
2015-07-20 | 1503232-06_TO12 | ND |
2015-07-20 | 1503232-05_TO12 | ND |
2015-07-20 | 1503232-03_TO12 | ND |
2016-01-11 | 1600887-08_TO12 | ND |
2016-01-11 | 1600887-02_TO12 | ND |
2016-05-09 | 1602070-04_TO12 | ND |
2016-05-09 | 1602070-05_TO12 | ND |
2016-07-25 | 1603626-02_TO12 | ND |
2016-07-25 | 1603626-04_TO12 | ND |
2016-07-25 | 1603626-03_TO12 | ND |
2016-07-25 | 1603626-01_TO12 | ND |
2017-01-24 | 1701020-02_TO12 | ND |
2017-01-25 | 1701027-06_TO12 | ND |
2017-05-15 | 1702185-02_TO12 | ND |
2017-05-15 | 1702185-01_TO12 | ND |
2017-07-10 | 1703108-03_TO12 | ND |
2017-07-10 | 1703108-02_TO12 | ND |
2017-07-10 | 1703108-01_TO12 | ND |
2017-07-10 | 1703108-04_TO12 | ND |
2017-10-17 | 1710399-02_TO12 | ND |
2017-10-17 | 1710399-01_TO12 | ND |
2018-01-16 | 1800888-02_TO12 | ND |
2018-01-22 | 1800936-07_TO12 | ND |
2018-06-04 | 1802314-04_TO12 | ND |
2018-06-04 | 1802314-05_TO12 | ND |
2018-07-17 | 1803078-03_TO12 | ND |
2018-07-17 | 1803078-05_TO12 | ND |
2018-07-17 | 1803078-04_TO12 | ND |
2018-07-17 | 1803078-02_TO12 | ND |
2019-01-15 | 1900857-10_TO12 | ND |
2019-01-15 | 1900857-11_TO12 | ND |
2019-05-07 | 1901920-05_TO12 | ND |
2019-05-07 | 1901920-06_TO12 | ND |
2019-08-06 | 1903576-01_TO12 | ND |
2019-08-06 | 1903576-03_TO12 | ND |
2019-08-06 | 1903576-02_TO12 | ND |
2019-08-29 | 1904072-02_TO12 | ND |