o-Dichlorobenzene

City of Tempe

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.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2013	N/A	0	N/A
2014	ND	17	ND
2015	ND	2	ND
2016	ND	3	ND
2017	ND	24	ND
2018	ND	21	ND
2019	ND	17	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
2014-01-02	1401002-01V	ND
2014-01-28	1401146-01V	ND
2014-01-28	1401144-01V	ND
2014-01-28	1401143-01V	ND
2014-01-28	1401142-01V	ND
2014-01-29	1401148-01V	ND
2014-01-29	1401147-01V	ND
2014-01-29	1401145-01V	ND
2014-01-29	1401141-01V	ND
2014-03-24	1403189-01V	ND
2014-04-28	1404215-01V	ND
2014-04-30	1404216-01V	ND
2014-07-29	1407258-01V	ND
2014-07-30	1407280-01V	ND
2014-07-30	1407276-01V	ND
2014-11-12	1411119-01V	ND
2014-11-12	1411118-01V	ND
2015-02-25	150222701V	ND
2015-03-04	1503035-01V	ND
2016-01-13	1601108-01V	ND
2016-01-26	1601221-01V	ND
2016-04-08	1604073-01V	ND
2017-01-03	1701015-01V	ND
2017-01-03	1701007-01V	ND
2017-01-17	1701113-01V	ND
2017-01-17	1701112-01V	ND
2017-01-18	1701116-01V	ND
2017-01-18	1701115-01V	ND
2017-01-18	1701114-01V	ND
2017-01-19	1701117-01V	ND
2017-01-26	1701120-01V	ND
2017-01-26	1701119-01V	ND
2017-01-31	1701253-01V	ND
2017-01-31	1701252-01V	ND
2017-03-23	201703230333V	ND
2017-04-03	7040337-01VOC	ND
2017-05-04	7050712-01	ND
2017-05-04	7050711-01	ND
2017-08-28	1708300-01V	ND
2017-08-29	1708311-01V	ND
2017-08-30	1708317-01V	ND
2017-09-07	1709042-01V	ND
2017-10-02	1710019-01V	ND
2017-10-03	1710038-01V	ND
2017-10-11	1710157-01V	ND
2017-10-11	1710156-01V	ND
2018-01-02	1801001-001B	ND
2018-01-03	1801015-001B	ND
2018-01-03	1801014-001B	ND
2018-01-17	1801103-01B	ND
2018-01-17	1801102-001B	ND
2018-01-17	1801101-001B	ND
2018-01-18	1801115-001B	ND
2018-01-18	1801114-001B	ND
2018-01-23	1801143-001B	ND
2018-01-24	1801151-001B	ND
2018-02-05	1802024-001B	ND
2018-02-05	1802023-001B	ND
2018-02-06	1802032-001B	ND
2018-02-13	1802083-001B	ND
2018-03-06	1803023-001B	ND
2018-04-10	1804109-001B	ND
2018-04-11	1804131-001B	ND
2018-04-11	1804123-001B	ND
2018-07-09	1807047-001B	ND
2018-07-31	1807285-001B	ND
2018-10-01	1810011-001B	ND
2019-01-02	1901015-001 VOC	ND
2019-01-02	1901007-001 VOC	ND
2019-01-02	1901005-001 VOC	ND
2019-01-02	1901004-001 VOC	ND
2019-01-03	1901024-001 VOC	ND
2019-01-03	1901021-001 VOC	ND
2019-01-03	1901025-001 VOC	ND
2019-01-03	1901026-001 VOC	ND
2019-01-07	1901045-001 VOC	ND
2019-01-08	1901054-001 VOC	ND
2019-03-13	1903102-001 VOC	ND
2019-03-29	1903192-001 VOC	ND
2019-03-30	1903194-001 VOC	ND
2019-04-02	1904016-001	ND
2019-04-11	1904119-001	ND
2019-07-01	1907004-001	ND
2019-10-01	1910010-001	ND