Know Your Environment. Protect Your Health.

Hexachlorobenzene (HCB)

City of Alpine

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

Date Lab ID Result
2018-07-17Q1828669009ND
2018-07-17Q1828669010ND
2019-06-18Q1937877012ND
2019-06-18Q1937877013ND
2019-06-18Q1937877014ND
2020-06-01Q2021525025ND
2021-07-13Q2118334001ND
2021-07-13Q2118334002ND
2022-09-19Q2228089001ND
2022-09-19Q2228089011ND
2022-09-19Q2228089012ND
2023-07-24Q2329255001ND