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EWG's Tap Water Database — 2021 UPDATE

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Hexachlorobenzene (HCB)

Norman

Hexachlorobenzene is a cancer-causing, neurotoxic and hormone-disrupting chemical used as a pesticide until 1984. It is still found in landfills and hazardous waste sites, and can be detected in people.

MORE ABOUT THIS CONTAMINANT

 

166

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND1080ND
2019ND580ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.03 ppb

The EWG Health Guideline of 0.03 ppb for hexachlorobenzene 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 cancer.

EPA Maximum Contaminant
Level (MCL) 1 ppb

The legal limit for hexachlorobenzene, established in 1992, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to hexachlorobenzene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-033847206ND
2018-01-033847254ND
2018-01-033847263ND
2018-01-033847272ND
2018-01-033847281ND
2018-01-093850196ND
2018-01-093850206ND
2018-01-093850220ND
2018-01-163853825ND
2018-01-163853833ND
2018-01-163853855ND
2018-01-163853864ND
2018-01-163853899ND
2018-01-223856690ND
2018-01-223856742ND
2018-01-223856758ND
2018-01-243858396ND
2018-01-293860650ND
2018-01-293860692ND
2018-01-293860702ND
2018-01-303861546ND
2018-02-073867324ND
2018-02-073867333ND
2018-02-073867384ND
2018-02-143872979ND
2018-02-153873628ND
2018-02-223878277ND
2018-04-023902023ND
2018-04-023902036ND
2018-04-033903129ND
2018-04-033903138ND
2018-04-053905308ND
2018-04-053905319ND
2018-04-053905330ND
2018-04-093907192ND
2018-04-163913532ND
2018-04-163913541ND
2018-04-183915871ND
2018-04-183915909ND
2018-04-183915919ND
2018-04-263922071ND
2018-04-263922080ND
2018-04-263922089ND
2018-04-263922098ND
2018-04-303924225ND
2018-05-073930017ND
2018-05-073930045ND
2018-05-073930057ND
2018-05-073930085ND
2018-05-093933231ND
2018-05-093933739ND
2018-05-213942192ND
2018-05-213942201ND
2018-05-303949662ND
2018-07-023977715ND
2018-07-023978101ND
2018-07-023979192ND
2018-07-023980876ND
2018-07-043980834ND
2018-07-043980885ND
2018-07-103984442ND
2018-07-103984493ND
2018-07-103984506ND
2018-07-183993079ND
2018-07-183993099ND
2018-07-183993123ND
2018-07-183993136ND
2018-07-183995139ND
2018-07-254001419ND
2018-07-254001434ND
2018-07-254001458ND
2018-07-314006904ND
2018-07-314006953ND
2018-07-314007068ND
2018-07-314007077ND
2018-08-084016228ND
2018-08-084016300ND
2018-08-134020962ND
2018-08-204029322ND
2018-08-274036920ND
2018-08-274036962ND
2018-10-154089678ND
2018-10-154089704ND
2018-10-154089781ND
2018-10-154090914ND
2018-10-154090929ND
2018-10-174092786ND
2018-10-174092795ND
2018-10-184095079ND
2018-10-184095089ND
2018-10-184095097ND
2018-10-184095106ND
2018-10-184095109ND
2018-10-224099182ND
2018-10-224099191ND
2018-10-224099208ND
2018-10-234099317ND
2018-10-234099326ND
2018-10-234099335ND
2018-10-234099344ND
2018-10-234099546ND
2018-10-244100853ND
2018-10-294104477ND
2018-10-294104495ND
2018-10-294104504ND
2018-10-304105906ND
2018-12-174152936ND
2018-12-184154373ND
2019-02-134197672ND
2019-02-134197753ND
2019-02-134197838ND
2019-04-024246273ND
2019-04-024246282ND
2019-04-024246323ND
2019-04-024246332ND
2019-04-034247842ND
2019-04-034247858ND
2019-04-034247880ND
2019-04-044249674ND
2019-04-044249685ND
2019-04-044249695ND
2019-04-084253362ND
2019-04-084253371ND
2019-04-084253380ND
2019-04-094254455ND
2019-04-094254699ND
2019-04-094254708ND
2019-04-104256584ND
2019-04-104256597ND
2019-04-104256608ND
2019-04-104256619ND
2019-04-174264163ND
2019-04-294276349ND
2019-05-094289503ND
2019-06-264337292ND
2019-07-294368521ND
2019-08-154388909ND
2019-09-114417892ND
2019-09-114417910ND
2019-10-104452607ND
2019-10-104452618ND
2019-10-104452631ND
2019-10-154458272ND
2019-10-154458281ND
2019-10-154458331ND
2019-10-154458341ND
2019-10-154458449ND
2019-10-174460167ND
2019-11-064478565ND
2019-11-064478676ND
2019-11-064478700ND
2019-11-064478752ND
2019-11-064478754ND
2019-11-184489495ND
2019-11-184489504ND
2019-11-214494838ND
2019-11-214495322ND
2019-12-054505845ND
2019-12-054505855ND
2019-12-104510449ND
2019-12-104510458ND
2019-12-104510475ND
2019-12-104510528ND
2019-12-104518244ND
2019-12-174517952ND
2019-12-204522410ND