Tolerance index (TI) of rice plants grown in HM polluted water contained 5 and 10 mg/L ZnO NPs raised from seeds primed with bacterial strains (B. cereus and L. macroides). Waste water, B.c + w.w (B. cereus + waste water)., L.m + w.w (L. macroides + waste water)., 5 ZnO NPs + w.w (5 mg/L ZnO NPs + waste water), 10 ZnO NPs + w.w (10 mg/L ZnO NPs + waste water), B. c. + 5 + w.w (B. cereus + 5 mg/L ZnO NPs + waste water)., L.m + 5 + w.w (L. macroides + 5 mg/L ZnONPs + waste water), B.c. + 10 + w.w (B. cereus + 10 mg/L ZnO NPs + waste water), L.m. + 10 + w.w (L. macroides + 10 mg/L ZnO NPs + waste water).