o-Dichlorobenzene
North Alamo Water Supply Company
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 | 7 | 0 | ND |
2015 | ND | 6 | 0 | ND |
2016 | ND | 6 | 0 | ND |
2017 | ND | 6 | 0 | ND |
2018 | ND | 6 | 0 | ND |
2019 | ND | 6 | 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 |
---|---|---|
2014-06-17 | AC57095 | ND |
2014-06-17 | AC57101 | ND |
2014-09-22 | AC67643 | ND |
2014-09-22 | AC67625 | ND |
2014-09-22 | AC67631 | ND |
2014-09-22 | AC67635 | ND |
2014-09-22 | AC67641 | ND |
2015-02-03 | AC79048 | ND |
2015-07-15 | AC99685 | ND |
2015-07-15 | AC99679 | ND |
2015-07-15 | AC99695 | ND |
2015-07-15 | AC99711 | ND |
2015-07-15 | AC99705 | ND |
2016-08-03 | AD46885 | ND |
2016-08-03 | AD46889 | ND |
2016-08-03 | AD46887 | ND |
2016-08-03 | AD46901 | ND |
2016-08-03 | AD46903 | ND |
2016-11-16 | AD58353 | ND |
2017-07-11 | AD88927 | ND |
2017-07-11 | AD88931 | ND |
2017-07-11 | AD88929 | ND |
2017-07-11 | AD88925 | ND |
2017-07-11 | AD88933 | ND |
2017-10-03 | AD99099 | ND |
2018-07-11 | AE32987 | ND |
2018-07-11 | AE32983 | ND |
2018-07-11 | AE32985 | ND |
2018-07-11 | AE32979 | ND |
2018-07-11 | AE32981 | ND |
2018-11-06 | AE45439 | ND |
2019-09-03 | AE81779 | ND |
2019-09-03 | AE81759 | ND |
2019-09-03 | AE81755 | ND |
2019-09-03 | AE81773 | ND |
2019-09-03 | AE81775 | ND |
2019-11-05 | AE88496 | ND |