Journal ArticleDOI
International Report: Water losses management and techniques
TLDR
An overview of the state-of-the-art in management of water losses can be found in the IWSA International Report on Unaccounted for Water and the Economics of Leak Detection.Abstract:
Since the 1991 IWSA International Report on “Unaccounted for Water and the Economics of Leak Detection”, the topic of management of water losses in distribution systems has received increased attention. This International Report seeks to present an overview of the “state of the art” in management of Water Losses, based on the Reports prepared by National Rapporteurs, the recent recommendations of the IWA Task Forces on Water Losses and Performance Measures, and improved concepts for modelling components of leakage and pressure: leakage relationships. The IWA Task Force recommendations provide overdue clarification and guidance on several issues that have caused persistent problems in quantifying Water Losses and comparing the effectiveness of their management. It is hoped that this Report will assist in the promotion of a more standardised international approach to the definition, assessment, monitoring and management of Non-Revenue Water and Water Losses.read more
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Journal ArticleDOI
A review of methods for leakage management in pipe networks
TL;DR: A comprehensive review of the leakage management related methods developed so far can be broadly classified as follows: (1) leakage assessment methods which are focusing on quantifying the amount of water lost; (2) leakage detection methods that are primarily concerned with the detection of leakage hotspots and (3) leakage control models which are focused on the effective control of current and future leakage levels.
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Performance indicators for small- and medium-sized water supply systems: a review
TL;DR: Water supply systems (WSSs) are one of the most important and expensive core public infrastructures as mentioned in this paper, and the primary objective of a water supply utility is to have this valuable asset operate at its ma...
Journal ArticleDOI
Leak Localization in Water Networks: A Model-Based Methodology Using Pressure Sensors Applied to a Real Network in Barcelona [Applications of Control]
Ramon Pérez,Gerard Sanz,Vicenç Puig,Joseba Quevedo,Miquel Àngel Cugueró Escofet,Fatiha Nejjari,Jordi Meseguer,Gabriela Cembrano,Josep M. Mirats Tur,Ramon Sarrate +9 more
TL;DR: In this article, the main challenges in improving the efficiency of drinking water networks is to minimize leaks, which can cause significant economic losses in fluid transportation and extra costs for the final consumer due to the waste of energy and chemicals in water treatment plants.
Journal ArticleDOI
Evaluation of the apparent losses caused by water meter under-registration in intermittent water supply.
TL;DR: The aim of this paper is to analyse the role of two variables influencing the apparent losses: water meter age and the private storage tank effect on meter performance, and demonstrates that the impact on apparent losses from the meter starting flow rapidly increases with meter age.
Journal ArticleDOI
State-of-the-art review on the transient flow modeling and utilization for urban water supply system (UWSS) management
TL;DR: In this article, a comprehensive review on the transient flow research for urban water supply system (UWSS) management is presented, which consists of two aspects as follows: the first aspect is about the development and progress of current transient theory, including transient flow models, unsteady friction and turbulence models, and numerical simulation methods.
References
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Journal ArticleDOI
A review of performance indicators for real losses from water supply systems
TL;DR: The technical basis for the task force9s recommendations on PIs for real (physical) losses is explained and an auditable component-based approach is developed and satisfactorily tested for predicting UARL for any system, taking into account the local factors and using international data.