F ield visits were carried out during January 2006 along the north part of Nubia Lake for collecting samples offish; water and sediment to ensure the vvater quality safety before entering Egypt. The results indicated that residues of organochlorine and organophosphorus pesticides are present at Low concentrations in the water and majority of common species. These residues have apparently originated from the areas of intensive pesticide application in the Gezera and along the White Nile in central Sudan. So, it is essential that continuous monitoring of residues in the environmental components of the whole lake should be conducted.