ithin the framework of the International Odra Project, the organic pollution level, i.e. with pesticides, volatile organic com­pounds, polycyclic aromatic hy­dro­car­bons, poly­chlo­ri­nated biphenyls, chlorobenzenes, in Odra river sediment was studied by a scientific team from Gdask University of Technology. From August 1997 to May 2000 seven sample collections were conducted, among others one imme­di­ately after the flood in 1997 (for sam­pling sites see map in Part I). The results of multi-annual in­ves­ti­gations indicate that Odra river sediments are not polluted with pesticides, polychlorinated biphenyls (PCBs) and volatile organic compounds. The main problem, particularly in the upper course of the Odra river, is caused by polycyclic aromatic hydrocarbons (PAHs) present in sediments.