Nano-sized FeO and FeO were synthesized using a precipitation method. The nanomaterials were tested as adsorbents for the removal of both Cu and Pb ions. The nanomaterials were characterized using X-ray powder diffraction to determine both the phase and the average grain size of the synthesized nanomaterials. Batch pH studies were performed to determine the optimum binding pH for both the Cu and Pb to the synthesized nanomaterials. The optimum binding was observed to occur at pH 4 and above. Time dependency studies for Cu and Pb showed the binding occurred within the first five minutes of contact and remained constant up to 2 hours of contact. Isotherm studies were utilized to determine the binding capacity of each of the nanomaterials for Cu and Pb. The binding capacity of FeO with Cu and Pb were 37.04 mg/g and 166.67 mg/g, respectively. The binding capacities of the FeO nanomaterials with Cu and Pb were determined to be 19.61 mg/g and 47.62 mg/g, respectively. In addition, interference studies showed no significant reduction in the binding of either Cu or Pb to the FeO or FeO nanomaterials in the presence of solutions containing the individual ions Na, K, Mg and Ca or a solution consisting of a combination of all the aforementioned cations in one solution.