“…Municipal wastewater contains genotoxic compounds such as poly aromatic hydrocarbons and aromatic amines (excreted in the faeces and urine of people who consume fried meats) (Hayatsu et al, 1986;De Kok et al, 1992). These genotoxic compounds are not removed and may even be exacerbated by conventional wastewater treatment processes such as primary clarification and biological treatment followed by disinfection (Rappaport et al, 1979;Meier, 1985;Jolley, 1981).…”