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Analysis of the capacity of aquatic plants in north and south sectors of Idku Lake in two seasons for heavy metals removal was studied. The order of metals were; Fe> Pb> Co> Cr> Cd> Ni and Fe> Ni> Co> Pb> Cd> Cr in sediments and water, respectively. Ecological risk (Er) showed low potential risk for metals in all stations (< 40) and very high risk for Cd (> 320). The risk index (RI) showed very high ecological risk (> 600). Pollution load index (PLI) was low nearby El-Boughaz and very high in drainage water areas. Accumulation of metals in hydrophytes was; E. crassipes (Fe, Ni, Co, Cd, Pb, Cr); E. stagnina (Cd and Co); P. australis (Fe, Pb) and T. domingensis (Cr and Ni). Order of metal accumulation index (MAI) is P. australis> E. crassipes> T. domingensis> E. stagnina. The study revealed suitable plant species as phytoaccumulators.