Tema ovog diplomskog rada je smanjenje gubitaka vode u sustavima vodoopskrbe naselja. Gubici vode su sastavni dio svakog vodoopskrbnog sustava i predstavljaju veliki problem u očuvanju kontinuirane opskrbe vodom krajnjih potrošača. Kako bi se upravljalo gubicima u vodoopskrbnim sustavima, postoje razne metode i tehnike pronalaženja i smanjenja gubitaka koje su prikazane u diplomskom radu. Osim općenitih podataka o sustavima vodoopskrbe i njihovim održavanjima u radu su detaljno obrađeni principi kontrole curenja pomoću DMA zona – svrha DMA zona, projektiranje i uspostavljanje DMA zona, održavanje prihvatljive razine curenja u DMA zonama. Dio diplomskog rada prikazuje vodoopskrbni sustav Orahovica. U tom dijelu, osim općenito o vodoopskrbnom sustavu, prikazana je analiza sustava prema IWA metodologiji. Provedena su mjerenja protoka i tlaka te su koncepcijskim rješenjem DMA zona prikazane uštede koje bi se postigle ispitivanjem mreže i sanacijom kvarova te smanjenjem tlaka. Koncepcijskim rješenjem je predviđena i modernizacija nadzorno-upravljačkog sustava, kojim bi se pratila potrošnja u realnom vremenu, što je jedan od preduvjeta smanjenja gubitaka.

The subject of this paper is reduction of water losses in the water supply systems of settlements. Water losses are an integral part of each water supply system and represent a major problem in the maintenance of the continuous water supply of end-consumers. In order to manage the losses in water supply systems, there are various methods and techniques for finding and reducing the losses, which are presented in paper. In addition to the general data on water supply systems and their sustainability, the paper deals with the principles of controlling leakage using the DMA zones - the purpose of the DMA zones, designing and establishing DMA zones, maintaining acceptable levels of leakage in DMA zones. Part of the paper presents the Orahovica water supply system. In this section, except in general about the water supply system, system analysis is presented according to IWA methodology. Flow and pressure measurements were carried out and the conceptual solution of the DMA zones showed savings that would be achieved by testing the network and repairing the failures and reducing the pressure. The conceptual solution also envisages the modernization of the supervisory and control system, which will monitor real-time consumption, which is one of the preconditions for reducing losses.