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EWG's Tap Water Database — 2019 UPDATE

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Hexachlorobenzene (HCB)

Hilo

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013N/A00N/A
2014ND80ND
2015N/A00N/A
2016ND80ND
2017ND100ND

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
2012-04-302012050030010S1ND
2012-04-302012050030010S2ND
2014-01-22C14-01-0064ND
2014-01-22C14-01-0065ND
2014-01-22C14-01-0066ND
2014-01-22C14-01-0067ND
2014-04-01C14-04-0101ND
2014-04-01C14-04-0100ND
2014-04-01C14-04-0099ND
2014-04-01C14-04-0098AND
2016-02-22ND
2016-02-22ND
2016-02-22ND
2016-02-22ND
2016-06-01ND
2016-06-01ND
2016-06-01ND
2016-06-01ND
2017-03-14ND
2017-03-14ND
2017-03-14ND
2017-03-14ND
2017-05-09ND
2017-06-05ND
2017-06-05ND
2017-06-05ND
2017-06-05ND
2017-08-16ND