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The physical and chemical parameters in Abattoir wastewater from Maiduguri Metropolis, Nigeria were determined. Abattoir wastewater were collected for the determination of pH, temperature, conductivity, turbidity, chloride, nitrate, sulphate, phosphate, total suspended solid (TSS), total dissolved solid (TDS), dissolved oxygen (DO), chemical oxygen demand (COD), biochemical oxygen demand (BOD), and heavy metals using standard procedures. The mean concentration of 0.74 mg/l for Cd; 0.36 mg/l Pb and 0.41 mg/l Ni exceeded the WHO/USEPA standard of 0.03 mg/l Cd; 0.10 mg/l Pb and 0.10 mg/l Ni for the discharged of wastewater into river, while the levels of turbidity, nitrate, TSS and TDS were also higher than the WHO limits for the discharged of wastewater into river. The mean values of 2.2 mg/l, 718.0 mg/l and 1421.0 mg/l for DO, BOD and COD exceeded the WHO permissible limit of 4mg/l for DO, 20 mg/l for BOD and 1000 mg/l for COD for the discharged of wastewater from industries into river. From the results of this study, the abattoir wastewater was found to contained high levels of pollutant. Based on these findings, the abattoir wastewater should be monitor strictly by relevant agencies in order to prevent environmental pollution and reduced health hazards caused by activities of abattoir wastewater.