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EWG's Tap Water Database — 2021 UPDATE

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Hexachlorobenzene (HCB)

South Island PSD

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

 

22

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
2014ND120ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND100ND

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
2014-02-04AD35237ND
2014-02-04AD35249ND
2014-02-04AD35250ND
2014-02-04AD35231ND
2014-02-10AD35465ND
2014-02-10AD35466ND
2014-02-10AD35467ND
2014-02-10AD35468ND
2014-04-14AD38363ND
2014-04-14AD38374ND
2014-04-14AD38376ND
2014-09-08AD45158ND
2019-09-11AE36990ND
2019-09-11AE37008ND
2019-09-11AE37010ND
2019-09-12AE37131ND
2019-09-17AE37328ND
2019-09-17AE37326ND
2019-09-18AE37423ND
2019-09-18AE37429ND
2019-09-18AE37442ND
2019-12-17AE42015ND