Know Your Environment. Protect Your Health.

Hexachlorobenzene (HCB)

City of Rule

NOTE: City of Rule purchases water from North Central Texas Municipal Water Authority which is required to test for hexachlorobenzene (hcb). Sample information shown below was taken by North Central Texas Municipal Water Authority.

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND20ND
2021ND50ND
2022ND10ND
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

NOTE: City of Rule purchases water from North Central Texas Municipal Water Authority which is required to test for hexachlorobenzene (hcb). Sample information shown below was taken by North Central Texas Municipal Water Authority.

Date Lab ID Result
2018-02-13Q1806366001ND
2018-02-13Q1806366002ND
2018-05-15Q1819778002ND
2019-03-07Q1909867007ND
2020-03-17Q2011709001ND
2020-03-17Q2011709002ND
2021-03-01Q2105128001ND
2021-05-18Q2112967001ND
2021-08-24Q2122978001ND
2021-08-24Q2122978004ND
2021-12-09Q2134685001ND
2022-03-02Q2207242001ND
2022-09-07Q2226614010ND
2023-03-08Q2309188007ND
2023-09-05Q2338005001ND