Balancing And Water Without Income With Economic Justification And The Need To Improve The Distribution Network (Study Of The Area Covered By Reservoir 91 Tehran)

Abstract

Limitation of rainfall along with increasing population growth as well as severe limitation of renewable resources,
management and reform of consumption pattern has become more necessary. One of the most important methods
of consumption management is reducing water without revenue and water losses in water supply systems. Nonrevenue water is measured by the difference between water produced and consumption, which is divided into
apparent and actual losses. In order to prioritize based on the benefits obtained, it is necessary to review and
evaluate all operational steps of reducing water without revenue. The aim is to carry out balancing studies and
determine the various components of non-revenue water by the (International Water Association) method upgrade
the network to a system based on separate zones and pressure zones and develop a water distribution network
analysis model in Reservoir 91, Zone 1 of Tehran Water and Sewerage. This project can be used by decision makers
in the field of water and wastewater. Field measurements and economic calculations of non-revenue water
balancing show the need to reform the water distribution network. In this paper, while presenting a series of
necessary measures to reduce apparent and actual waste, the need to reduce leakage has been compared
economically with the comparison of related revenues and costs. Indicators for evaluating non-revenue water in the
study area have been calculated so that in measuring cost / revenue can be the lowest cost in improving the water
supply situation.