ABSTRACT
This article describes the use of metered water supply districts as a tool for an active leakage and-both real and apparent-water loss control.
2 MATERIAL AND METHODS
2.1 Characteristics of research area
Water supply system in Kraków is one of the largest in Poland. It is made up of 2166 km of water supply network. Metering of water supply is performed by means of more than 56 thousand main water meters. Water meters installed at recipients are readout every 30 or 60 days (Cichoń 2015). Metering of the water amount flowing in the supply system is conducted at the outflow of water treatment stations, as well as in numerous metering points installed on the municipal network. Water supply system in Kraków, due to the diversified terrain level and its sheer size, is divided into pressure districts, separated from individual supply districts. Pressure districts are of varying size and the largest ones supply ten-odd thousand recipients, which is reflected in the failure rate of the network (Zimoch 2010). The main districts boast several water supply connections, as well as parts where water flows in different directions, depending on its reception.
