Know Your Environment. Protect Your Health.

Hexachlorobenzene (HCB)

City of West

NOTE: City of West purchases water from City of Waco which is required to test for hexachlorobenzene (hcb). Sample information shown below was taken by City of Waco.

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND30ND
2020ND20ND
2021ND20ND
2022ND10ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: City of West purchases water from City of Waco which is required to test for hexachlorobenzene (hcb). Sample information shown below was taken by City of Waco.

Date Lab ID Result
2018-01-09AE08463ND
2018-01-09AE08464ND
2019-01-23AE51053ND
2019-01-23AE51054ND
2020-02-05AE97177ND
2020-02-05AE97178ND
2020-02-05AE97179ND
2021-03-17AF47324ND
2021-03-17AF47325ND
2022-01-26AF82013ND
2022-01-26AF82015ND
2023-03-01AG31198ND
2023-05-10AG40106ND