U radu se opisuje mješovita kanalizacija čije su značajke rasteretne građevine kojima se za vrijeme kiša nepročišćene otpadne vode zajedno s oborinskim vodama prelijevaju u prijamnike. Cilj građenja rasteretnih građevina je prije svega ekonomski. Preljevne vode onečišćuju okoliš, što treba kontrolirati. Kontrola je složena, skupa i dugotrajna. Preduvjet za uspješno rješavanje problema je donošenje nacionalne strategije i dugoročnih planova za upravljanje rasteretnim građevinama.The mixed sewage disposal system, characterized by overflow facilities, through which untreated waste waters and rain water are together evacuated into the final discharge zone, is described. These overflow facilities are built primarily for economic reasons. Overflowing waters pollute environment, and must therefore be controlled. This control is complex, expensive and time-consuming. Development of national strategy, and the long-term overflow facility management plan, are the main preconditions for successful resolution of this problem
