Know Your Environment. Protect Your Health.

Hexachlorobenzene (HCB)

North Texas Municipal Water District Wylie Water Treatment Plant

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-01-23Q1802554003ND
2018-09-17Q1836833001ND
2018-09-17Q1836833002ND
2019-01-15Q1902044003ND
2019-01-15Q1902044004ND
2019-01-15Q1902044005ND
2020-03-10Q2009279001ND
2020-03-10Q2009279002ND
2020-03-10Q2009279003ND
2021-01-28Q2102310001ND
2021-01-28Q2102310003ND
2021-01-28Q2102310002ND
2022-03-22AF91419ND
2022-03-22AF91449ND
2022-03-22Q2209138001ND
2023-02-22Q2307413002ND
2023-02-22Q2307413006ND
2023-08-22Q2335430009ND