Know Your Environment. Protect Your Health.

Hexachlorobenzene (HCB)

Gretna Waterworks

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-04-1735386954003ND
2018-04-1735386954003ND
2018-10-0235421766001ND
2018-10-0235421766001ND
2019-02-0535446730001ND
2019-02-0535446730001ND
2019-08-1435490413001ND
2019-08-1435490413001ND
2020-03-1835538511001ND
2020-10-2635587648001ND
2021-03-0135615731001ND
2021-12-0835683666002ND
2022-01-1335690761001ND
2022-08-0435737249001ND
2023-02-0135777180001ND
2023-10-1135834160001ND