Hexachlorobenzene (HCB)

Boone County Cons. PWSD1

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

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	N/A	0	N/A
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	N/A	0	N/A
2018	ND	18	ND
2019	ND	4	ND

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
2018-03-07	AD14744	ND
2018-03-07	AD14754	ND
2018-03-07	AD14753	ND
2018-03-07	AD14752	ND
2018-03-07	AD14751	ND
2018-03-07	AD14750	ND
2018-03-07	AD14747	ND
2018-03-07	AD14746	ND
2018-03-07	AD14745	ND
2018-03-07	AD14743	ND
2018-03-07	AD14749	ND
2018-03-07	AD14741	ND
2018-03-16	AD17714	ND
2018-03-16	AD17715	ND
2018-04-11	AD18403	ND
2018-05-21	AD20840	ND
2018-08-21	AD31542	ND
2018-11-19	AD36040	ND
2019-02-08	AD39831	ND
2019-05-21	AD47807	ND
2019-08-22	AD54307	ND
2019-11-21	AD58314	ND