The district Olomouc is situated in central Moravia, its area is 1 452 km2 and its centre is the town Olomouc with hundred thousand inhabitants. In this area during the investigation of dumping sites of solid wastes made in the years 1988-1991 were established more than 300 dumps, out of this 60 ones were recultivated. In the year 1987 in the district was produced 1 754 000 t of solid waste, out of this 640 t was dangerous. Only the half of this dangerous waste was neutralized. The largest problems appear at the dumps located in the flood plain of the Morava river and on low terraces. From the viewpoint of human environment the dumping sites on devoni an limestones are also dangerous. Within the frame of investigation was probably miscarried to determine all dumps, especially the “black“ ones in afforested hilly areas. On the map (Fig. 1) 1 : 50 000 are expressed also the interactions of dumps and natural concentration of underground waters, zones of sanitary protection of water resources and protected areas.