Accumulation of heavy metals in edible parts of vegetables irrigated with waste water and their daily intake to adults and children, District Mardan, Pakistan

► Level of eight heavy metals was determined in vegetables irrigated with wastewater. ► Heavy metals accumulation was several folds greater than the FAO/WHO standards. ► High bioconcentration factor was associated with all vegetables studied. ► Daily human intake of the metals a was significantly greater than FAO/WHO standards.