o-Dichlorobenzene
City of Colton
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 | 3 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 12 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 2 | 0 | ND |
2019 | ND | 10 | 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 |
---|---|---|
2014-02-19 | 3761-030-0740 | ND |
2014-05-08 | 3761-030-0740 | ND |
2014-08-19 | 3761-030-0930 | ND |
2015-08-20 | 3761-010-0640 | ND |
2016-06-13 | 3761-016-1030 | ND |
2016-09-07 | 3761-008-0800 | ND |
2016-09-07 | 3761-024-1325 | ND |
2016-09-07 | 3761-021-0845 | ND |
2016-09-07 | 3761-011-0810 | ND |
2016-09-07 | 3761-017-0705 | ND |
2016-09-07 | 3761-030-0900 | ND |
2016-09-07 | 3761-016-0925 | ND |
2016-09-07 | 3761-015-0745 | ND |
2016-09-07 | 3761-014-0730 | ND |
2016-09-07 | 3761-010-1535 | ND |
2016-12-14 | 3761-023-1020 | ND |
2018-06-12 | 3761-023-1000 | ND |
2018-09-06 | 3761-012-1330 | ND |
2019-07-30 | 3761-017-0830 | ND |
2019-09-12 | 3761-030-0955 | ND |
2019-09-12 | 3761-017-1040 | ND |
2019-09-12 | 3761-021-1100 | ND |
2019-09-12 | 3761-016-1020 | ND |
2019-09-12 | 3761-011-1320 | ND |
2019-09-16 | 3761-023-0000 | ND |
2019-09-16 | 3761-015-0000 | ND |
2019-09-16 | 3761-010-0000 | ND |
2019-09-16 | 3761-012-0000 | ND |