Heavy metals (lead, cadmium, chromium and Nickel) were determined in thirteen tilapia fish samples (fresh and cooked) and three water samples collected from Jabel Awlia, Alozozab, Almourada and Alsamrab.

Analysis of Three fish samples (flesh, skin and crust) collected from Jabel Awlia, Alozozab and Almourada, the flesh show the presence of (Pb :0.253 ppm and Ni :0.094 ppm), the skin show the presence of (Pb :0.862 ppm and Ni :0.1740 ppm) and the crust show the presence of (Ni :0.623 ppm). In Alozozab samples, the flesh shows the presence of (Ni: 0.498 ppm and Cd: 0.0006 ppm), the skin show the presence of (Ni: 1.202ppm and Cd: 0.346 ppm) and the crust show the presence of (Ni: 0.344 ppm). In Almourada samples, the flesh show the presence of (Pb: 0.682 ppm, Ni: 0.163 ppm, Cr: 0.0137ppm and Cd: 0.004 ppm), the skin show the presence of (Ni: 0.003 ppm) and the crust show the presence of (Ni: 0.101 ppm and Pb: 0.077 ppm). Two cooked fish samples (flesh and skin) collected from Almourada and Alsamrab, the flesh show the presence of (Ni: 0.394 ppm, Cr: 0.106 ppm, Cd: 0.089 ppm and Pb: 0.002 ppm) and the skin show the presence of (Ni: 0.299 ppm). In Alsamrab samples, the flesh show the presence of (Ni: 0.168 ppm and Pb: 0.122 ppm) and the skin show the presence of (Ni: 0.928 ppm, Pb: 0.356 ppm and Cd :0.250 ppm).

Analysis of water sample collected from Jabel Awlia, show the presence of (Pb: 0.366 ppm, Cr: 0.150 ppm and Ni :0.033 ppm), Two samples collected from Alozozab (Bridge and Drainage water), the Bridgewater sample show the Presence of (Cd :0.025ppm and Cr: 0.242ppm) and Drainage water sample show the presence of (Ni: 0.206 ppm, Pb: 0.157ppm and Cr: 0.0194 ppm).