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EWG's Tap Water Database — 2021 UPDATE

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Hexachlorobenzene (HCB)

Honolulu-Windward-Pearl Harbor

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

 

317

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
2014ND1170ND
2015ND240ND
2016ND210ND
2017ND1020ND
2018ND280ND
2019ND250ND

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
2014-02-12201402140300ND
2014-02-12201402140301ND
2014-02-12201402140302ND
2014-02-13201402150240ND
2014-02-19201402210438ND
2014-02-24201402260749ND
2014-04-01201404030466ND
2014-04-01201404030467ND
2014-04-01201404030468ND
2014-04-01201404030469ND
2014-04-02201404040550ND
2014-04-02201404040551ND
2014-04-02201404040552ND
2014-04-02201404040553ND
2014-04-02201404040554ND
2014-04-04201404080620ND
2014-04-04201404080621ND
2014-04-07201404090482ND
2014-04-07201404090483ND
2014-04-07201404090484ND
2014-04-07201404090485ND
2014-04-08201404100546ND
2014-04-08201404100547ND
2014-04-08201404100549ND
2014-04-08201404100550ND
2014-04-09201404120256ND
2014-04-09201404120257ND
2014-04-11201404150363ND
2014-04-14201404160551ND
2014-04-14201404160552ND
2014-04-14201404160553ND
2014-04-14201404160554ND
2014-04-14201404160555ND
2014-04-14201404160556ND
2014-04-15201404170340ND
2014-04-15201404170341ND
2014-04-15201404170342ND
2014-04-15201404170344ND
2014-04-16201404180401ND
2014-04-16201404180402ND
2014-04-16201404180403ND
2014-04-16201404180404ND
2014-04-16201404180405ND
2014-04-16201404180406ND
2014-04-21201404230599ND
2014-04-22201404240273ND
2014-04-22201404240274ND
2014-04-23201404250201ND
2014-04-23201404250202ND
2014-04-28201404300621ND
2014-05-06201405080376ND
2014-05-07201405090622ND
2014-05-07201405090625ND
2014-07-07201407091151ND
2014-07-09201407110319ND
2014-07-09201407110320ND
2014-07-09201407110321ND
2014-07-14201407170344ND
2014-07-14201407170345ND
2014-07-14201407170634ND
2014-07-14201407170635ND
2014-07-15201407170633ND
2014-07-16201407180291ND
2014-07-16201407180292ND
2014-07-16201407180293ND
2014-07-16201407180294ND
2014-07-21201407230644ND
2014-07-22201407240385ND
2014-07-22201407240386ND
2014-07-22201407240387ND
2014-07-22C14-07-0138AND
2014-07-22C14-07-0139ND
2014-07-22C14-07-0140AND
2014-07-22C14-07-0141ND
2014-07-22C14-07-0142ND
2014-07-22C14-07-0143ND
2014-07-22C14-07-0144ND
2014-07-22C14-07-0145ND
2014-07-23201407250455ND
2014-07-24C14-07-0157ND
2014-07-24C14-07-0158AND
2014-07-24C14-07-0159ND
2014-07-24C14-07-0160ND
2014-07-24C14-07-0161ND
2014-07-28201407300353ND
2014-07-28201407300354ND
2014-07-28201407300355ND
2014-07-28201407300356ND
2014-07-28201407300357ND
2014-07-28201407300358ND
2014-07-29201407310301ND
2014-07-29201407310302ND
2014-07-29201407310303ND
2014-07-29201407310304ND
2014-07-29201407310305ND
2014-07-30201408010298ND
2014-07-30201408010299ND
2014-07-30201408010300ND
2014-07-30201408010301ND
2014-08-06201408080380ND
2014-08-11201408130617ND
2014-08-11201408130619ND
2014-08-11201408130620ND
2014-08-12201408150106ND
2014-08-12201408150107ND
2014-08-13201408150180ND
2014-08-13201408150181ND
2014-08-18201408210214ND
2014-08-18201408210215ND
2014-08-19201408210635ND
2014-08-19201408220168ND
2014-08-26201408290555ND
2014-08-27201408300150ND
2014-09-05201409090243ND
2014-10-21201410230268ND
2014-10-28201410300232ND
2014-10-31201411040539ND
2015-01-23201501270104ND
2015-02-09201502110395ND
2015-02-10201502120276ND
2015-04-07201504090113ND
2015-04-07201504090114ND
2015-04-08201504100169ND
2015-04-13201504150250ND
2015-04-15201504170064ND
2015-04-27201504280100ND
2015-04-27201504290336ND
2015-04-27201504290337ND
2015-04-29201504300057ND
2015-05-04201505060108ND
2015-05-05201505060141ND
2015-05-27201505290083ND
2015-06-10201506110760ND
2015-07-08201507100092ND
2015-07-08201507100093ND
2015-07-20201507220425ND
2015-08-18201508200479ND
2015-10-06201510080301ND
2015-10-12201510140312ND
2015-10-19201510140073ND
2015-12-28201512180363ND
2016-01-26ND
2016-02-09ND
2016-03-16ND
2016-04-06ND
2016-04-06ND
2016-04-07ND
2016-04-12ND
2016-04-12ND
2016-04-12ND
2016-04-12ND
2016-04-13ND
2016-04-13ND
2016-04-13ND
2016-04-13ND
2016-04-14ND
2016-05-02ND
2016-07-07ND
2016-07-11ND
2016-10-04ND
2016-10-12ND
2016-10-28ND
2017-01-06ND
2017-01-06ND
2017-02-14ND
2017-04-03ND
2017-04-03ND
2017-04-05ND
2017-04-05ND
2017-04-11ND
2017-04-11ND
2017-04-11ND
2017-04-17ND
2017-04-17ND
2017-04-18ND
2017-04-18ND
2017-04-19ND
2017-04-19ND
2017-04-19ND
2017-04-19ND
2017-04-19ND
2017-04-19ND
2017-04-20ND
2017-05-01ND
2017-05-01ND
2017-05-02ND
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-05-04ND
2017-05-09ND
2017-05-09ND
2017-05-09ND
2017-05-10ND
2017-05-10ND
2017-05-11ND
2017-05-16ND
2017-05-16ND
2017-05-17ND
2017-05-17ND
2017-05-22ND
2017-05-22ND
2017-05-22ND
2017-05-22ND
2017-05-22ND
2017-05-23ND
2017-05-23ND
2017-05-24ND
2017-05-30ND
2017-06-05ND
2017-06-05ND
2017-06-05ND
2017-06-06ND
2017-06-07ND
2017-07-05ND
2017-07-05ND
2017-07-07ND
2017-07-07ND
2017-07-10ND
2017-07-11ND
2017-07-11ND
2017-07-12ND
2017-07-12ND
2017-07-14ND
2017-07-14ND
2017-07-14ND
2017-07-14ND
2017-07-17ND
2017-07-17ND
2017-07-17ND
2017-07-17ND
2017-07-18ND
2017-07-18ND
2017-07-18ND
2017-07-19ND
2017-07-19ND
2017-07-19ND
2017-07-19ND
2017-07-19ND
2017-07-19ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-07-26ND
2017-07-26ND
2017-07-31ND
2017-07-31ND
2017-08-01ND
2017-08-01ND
2017-08-02ND
2017-08-02ND
2017-08-04ND
2017-08-04ND
2017-08-07ND
2017-08-07ND
2017-08-11ND
2017-08-15ND
2017-08-15ND
2017-08-17ND
2017-10-11ND
2017-10-12ND
2017-10-26ND
2018-01-22201712280221ND
2018-01-31201712280218ND
2018-02-12201801080281ND
2018-02-20201801290307ND
2018-03-28201803300306ND
2018-04-04201804060493ND
2018-04-09201804120582ND
2018-04-09201804120583ND
2018-04-09201804120586ND
2018-04-10201804130358ND
2018-04-10201804120580ND
2018-04-11201804160615ND
2018-04-17201804181083ND
2018-04-18201804200567ND
2018-04-18201804200568ND
2018-04-23201804270354ND
2018-04-24201804260448ND
2018-05-30201805230584ND
2018-06-12201805230583ND
2018-07-13201807170605ND
2018-07-25201807270183ND
2018-08-01201808030195ND
2018-08-06201808090955ND
2018-08-06201808090956ND
2018-08-08201808110152ND
2018-10-17201810190436ND
2018-10-17201810190437ND
2018-10-22201810240183ND
2019-01-30201902010237ND
2019-02-08201902130369ND
2019-04-01201904020237ND
2019-04-03201904050243ND
2019-04-08201904100442ND
2019-04-10201904110140ND
2019-04-10201904120295ND
2019-04-17201904190115ND
2019-04-17201904190116ND
2019-04-22201904240396ND
2019-04-24201904250251ND
2019-04-29201904300227ND
2019-05-01201905020257ND
2019-05-01201905020258ND
2019-05-02201905030134ND
2019-07-09201906200200ND
2019-08-05201908070574ND
2019-08-26201908280436ND
2019-09-18201909200252ND
2019-09-25201909270220ND
2019-10-22201910240455ND
2019-10-22201910240454ND
2019-10-29201910310278ND
2019-12-19201912200397ND
2019-12-24201912180100ND