Water Loss Assessment in Distribution Networks

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Publisher : CRC Press
ISBN 13 : 1000380432
Total Pages : 197 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Water Loss Assessment in Distribution Networks by : Taha M. Al-Washali

Download or read book Water Loss Assessment in Distribution Networks written by Taha M. Al-Washali and published by CRC Press. This book was released on 2021-06-08 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water utilities worldwide lose 128 billion cubic meters annually, causing annual monetary losses estimated at USD 40 billion. Most of these losses occur in developing countries (74%). This calls for rethinking the challenges facing water utilities in developing countries, foremost of which is the assessment of water losses in intermittent supply networks. Water loss assessment methods were originally developed in continuous supply systems, and their application in intermittently operated networks (in developing countries) is hindered by the widespread use of household water tanks and unauthorised consumption. This study provides an extensive review of existing methods and (software) tools for water loss assessment. In addition, several new methods were developed, which offer improved water loss assessment in intermittent supply. As the volume of water loss varies monthly and annually according to the amount of supplied water, this study proposes procedures to normalise the volume of water loss in order to enable water utilities to monitor and benchmark their performance on water loss management. The study also developed a novel method of estimating apparent losses using routine data of WWTP inflows, enabling future real-time monitoring of losses in networks. Different methods have also been suggested to estimate the unauthorised consumption in networks. This study found that minimum night flow analysis can still be applied in intermittent supply if an area of the network is supplied for several days. Furthermore, this study concluded that water meter performance is enhanced in intermittent supply conditions. However, continuous supply in the presence of float-valves significantly reduces the accuracy of water meters. Finally, this study provides guidance and highlights several knowledge gaps in order to improve the accuracy of water loss assessment in intermittent supply. Accurate assessment of water loss is a prerequisite for reliable leakage modelling and minimisation as well as planning for, and monitoring of water loss management in distribution networks.

Losses in Water Distribution Networks

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Publisher : IWA Publishing
ISBN 13 : 1900222116
Total Pages : 297 pages
Book Rating : 4.9/5 (2 download)

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Book Synopsis Losses in Water Distribution Networks by : M. Farley

Download or read book Losses in Water Distribution Networks written by M. Farley and published by IWA Publishing. This book was released on 2003-03-31 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a best practice manual for addressing water losses in water distribution networks worldwide. Systems and methodologies are presented for improving water loss and leakage management in a range of networks, from systems with a well-developed infrastructure to those in developing countries where the network may need to be upgraded. The key feature of the manual is a diagnostic approach to develop a water loss strategy - using the appropriate tools to find the right solutions - which can be applied to any network. The methods of assessing the scale and volume of water loss are outlined, together with the procedures for setting up leakage monitoring and detection systems. As well as real losses (leakage) procedures for addressing apparent losses, by introducing regulatory and customer metering policies are explained. Suggestions are made for demand management and water conservation programmes, to complement the water loss strategy. Recommendations are made for training workshops and operation and maintenance programmes to ensure skills transfer and sustainability. The manual is illustrated throughout with case studies. Losses in Water Distribution Networks will appeal to a wide range of practitioners responsible for designing and managing a water loss strategy. These include consultants, operations managers, engineers, technicians and operational staff. It will also be a valuable reference for senior managers and decision makers, who may require an overview of the principles and procedures for controlling losses. The book will also be suitable as a source document for courses in Water Engineering, Resource Management and Environmental Management.

Drinking Water Distribution Systems

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Publisher : National Academies Press
ISBN 13 : 0309103061
Total Pages : 405 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Drinking Water Distribution Systems by : National Research Council

Download or read book Drinking Water Distribution Systems written by National Research Council and published by National Academies Press. This book was released on 2007-01-22 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protecting and maintaining water distributions systems is crucial to ensuring high quality drinking water. Distribution systems-consisting of pipes, pumps, valves, storage tanks, reservoirs, meters, fittings, and other hydraulic appurtenances-carry drinking water from a centralized treatment plant or well supplies to consumers' taps. Spanning almost 1 million miles in the United States, distribution systems represent the vast majority of physical infrastructure for water supplies, and thus constitute the primary management challenge from both an operational and public health standpoint. Recent data on waterborne disease outbreaks suggest that distribution systems remain a source of contamination that has yet to be fully addressed. This report evaluates approaches for risk characterization and recent data, and it identifies a variety of strategies that could be considered to reduce the risks posed by water-quality deteriorating events in distribution systems. Particular attention is given to backflow events via cross connections, the potential for contamination of the distribution system during construction and repair activities, maintenance of storage facilities, and the role of premise plumbing in public health risk. The report also identifies advances in detection, monitoring and modeling, analytical methods, and research and development opportunities that will enable the water supply industry to further reduce risks associated with drinking water distribution systems.

Performance Indicators for Water Supply Services

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Publisher : IWA Publishing
ISBN 13 : 1780406320
Total Pages : 404 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Performance Indicators for Water Supply Services by : Helena Alegre

Download or read book Performance Indicators for Water Supply Services written by Helena Alegre and published by IWA Publishing. This book was released on 2016-09-15 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IWA Performance Indicator System for water services is now recognized as a worldwide reference. Since it first appearance in 2000, the system has been widely quoted, adapted and used in a large number of projects both for internal performance assessment and metric benchmarking. Water professionals have benefited from a coherent and flexible system, with precise and detailed definitions that in many cases have become a standard. The system has proven to be adaptable and it has been used in very different contexts for diverse purposes. The Performance Indicators System can be used in any organization regardless of its size, nature (public, private, etc.) or degree of complexity and development. The third edition of Performance Indicators for Water Supply Services represents a further improvement of the original manual. It contains a reviewed and consolidated version of the indicators, resulting from the real needs of water companies worldwide that were expressed during the extensive field testing of the original system. The indicators now properly cover bulk distribution and the needs of developing countries, and all definitions have been thoroughly revised. The confidence grading scheme has been simplified and the procedure to assess the results- uncertainty has been significantly enhanced. In addition to the updated contents of the original edition, a large part of the manual is now devoted to the practical application of the system. Complete with simplified step-by-step implementation procedures and case studies, the manual provides guidelines on how to adapt the IWA concepts and indicators to specific contexts and objectives. This new edition of Performance Indicators for Water Supply Services is an invaluable reference source for all those concerned with managing the performance of the water supply industry, including those in the water utilities as well as regulators, policy-makers and financial agencies.

Urban Water Distribution Networks

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Publisher : Butterworth-Heinemann
ISBN 13 : 0128136537
Total Pages : 328 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Urban Water Distribution Networks by : Symeon Christodoulou

Download or read book Urban Water Distribution Networks written by Symeon Christodoulou and published by Butterworth-Heinemann. This book was released on 2017-09-07 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban Water Distribution Networks: Assessing Systems Vulnerabilities and Risks provides a methodology for a system-wide assessment of water distribution networks (WDN) based on component analysis, network topology and, most importantly, the effects of a network's past performance on its seismic and/or non-seismic reliability. Water distribution networks engineers and system designers face multiple operational issues in delivering safe and clean potable water to their customers. Includes vulnerability assessment methods for water distribution pipes Discusses topological aspects and their effects on network vulnerability Explores analytical and numerical modeling methods for finding and analyzing systems vulnerabilities in water distribution networks Features real world case studies of networks under continuous and intermittent water supply operations

Water Loss Control

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Publisher : McGraw Hill Professional
ISBN 13 : 0071640991
Total Pages : 649 pages
Book Rating : 4.0/5 (716 download)

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Book Synopsis Water Loss Control by : Julian Thornton

Download or read book Water Loss Control written by Julian Thornton and published by McGraw Hill Professional. This book was released on 2008-07-15 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master the Latest Techniques to Quantify, Locate, Control, and Prevent Water and Revenue Loss in Water Utility Operations This comprehensive guide takes you step by step through every stage of the development of a water loss control program-from measuring and auditing water loss, tracking losses to their root cause, to developing a loss control program for future efficiency. Inside, you'll find precise descriptions of the most current methodologies and technologies, along with tables and figures presenting key information clearly and concisely. This second edition brings innovative approaches to water loss management, with information on new modeling methods, leak detection equipment, revenue protection programs, and best practices advocated by the American Water Works Association and the International Water Association. Includes: Updated U.S. and international standardized water audit methodologies Step-by-step guide to creating an effective water loss control program Guidance on data collection, validation, and component analysis of water supply and customer consumption volumes Detailed description of available intervention tools against real losses Detailed description of available intervention tools against apparent losses Innovations in automatic meter reading (AMR) and advanced metering infrastructure (AMI) that will transform accountability in the water supply industry Integrated technologies to optimize water distribution system operations Detailed descriptions and case studies of successful water loss control and intervention programs Comprehensive glossary of terms Water Loss Control Manual covers: Various Types of Water and Revenue Losses • Traditional Control Methods • Progressive Approaches • Standard Water Audit Methodology • Meaningful Performance Indicators • Data Collection • Information Management • Validating the Water Audit Data • Field Equipment • Computer Modeling • •Strategies and Methods to Control Leakage and Optimize Revenue Recovery • Active Leakage Detection and Repair • Pressure Management • Distribution System Rehabilitation • Water Efficiency Programs • Hiring Contractors • Writing Bids • Case Studies • Calculations • Industry Papers

Assessment of Treatment Plant Performance and Water Quality Data: A Guide for Students, Researchers and Practitioners

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Publisher : IWA Publishing
ISBN 13 : 1780409311
Total Pages : 668 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Assessment of Treatment Plant Performance and Water Quality Data: A Guide for Students, Researchers and Practitioners by : Marcos von Sperling

Download or read book Assessment of Treatment Plant Performance and Water Quality Data: A Guide for Students, Researchers and Practitioners written by Marcos von Sperling and published by IWA Publishing. This book was released on 2020-01-15 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the basic principles for evaluating water quality and treatment plant performance in a clear, innovative and didactic way, using a combined approach that involves the interpretation of monitoring data associated with (i) the basic processes that take place in water bodies and in water and wastewater treatment plants and (ii) data management and statistical calculations to allow a deep interpretation of the data. This book is problem-oriented and works from practice to theory, covering most of the information you will need, such as (a) obtaining flow data and working with the concept of loading, (b) organizing sampling programmes and measurements, (c) connecting laboratory analysis to data management, (e) using numerical and graphical methods for describing monitoring data (descriptive statistics), (f) understanding and reporting removal efficiencies, (g) recognizing symmetry and asymmetry in monitoring data (normal and log-normal distributions), (h) evaluating compliance with targets and regulatory standards for effluents and water bodies, (i) making comparisons with the monitoring data (tests of hypothesis), (j) understanding the relationship between monitoring variables (correlation and regression analysis), (k) making water and mass balances, (l) understanding the different loading rates applied to treatment units, (m) learning the principles of reaction kinetics and reactor hydraulics and (n) performing calibration and verification of models. The major concepts are illustrated by 92 fully worked-out examples, which are supported by 75 freely-downloadable Excel spreadsheets. Each chapter concludes with a checklist for your report. If you are a student, researcher or practitioner planning to use or already using treatment plant and water quality monitoring data, then this book is for you! 75 Excel spreadsheets are available to download.

Advances in Water Distribution Networks

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Publisher : MDPI
ISBN 13 : 3038975567
Total Pages : 174 pages
Book Rating : 4.0/5 (389 download)

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Book Synopsis Advances in Water Distribution Networks by : Giuseppe Pezzinga

Download or read book Advances in Water Distribution Networks written by Giuseppe Pezzinga and published by MDPI. This book was released on 2019-02-28 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Special Issue on Advances in Water Distribution Networks (WDNs) explores four important topics of research in the framework of WDNs, namely simulation and optimization modelling, topology and partitioning, water quality, and service effectiveness. With regard to the first topic, the following aspects are addressed: pressure-driven formulations, algorithms for the optimal location of control valves to minimize leakage, the benefits of water discharge prediction for the remote real time control of valves, and transients generated by pumps operating as turbines. In the context of the second topic, a topological taxonomy of WDNs is presented, and partitioning methods for the creation of district metered areas are compared. In relation to the third topic, the vulnerability to trihalomethane is assessed, and a statistical optimization model to minimize heavy metal releases is presented. Finally, the fourth topic focusses on the estimation of non-revenue water, including leakage and unauthorized consumption, and on the assessment of service under intermittent supply conditions.

Water Management and Water Loss

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Publisher : IWA Publishing
ISBN 13 : 1780406355
Total Pages : 204 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Water Management and Water Loss by : Stuart Hamilton

Download or read book Water Management and Water Loss written by Stuart Hamilton and published by IWA Publishing. This book was released on 2014-10-15 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water Management and Water Loss contains a selection of papers and articles written by various internationally recognised specialists in the field of water loss reduction. The articles have been drawn together from IWA conferences during the past 5 years and provide details of how water losses from Municipal distribution systems can be reduced. The book provides useful background information and reference materials to help explain the different approaches and interventions that are used to reduce water losses. Numerous real case studies are provided that highlight the processes and methodologies employed around the world to reduce water losses. Water Management and Water Loss covers many aspects of water loss control including, pressure management, leak detection and repair, Internal plumbing losses and retrofitting, community involvement and education/awareness, schools education and leak repair projects. Authors: Stuart Hamilton, Hydrotec Ltd.,Thorpe Underwood, Northants, UK and Ronnie McKenzie, Groenkloof, Pretoria, South Africa

Leak Detection

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Publisher : IWA Publishing
ISBN 13 : 1780404700
Total Pages : 106 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Leak Detection by : Stuart Hamilton

Download or read book Leak Detection written by Stuart Hamilton and published by IWA Publishing. This book was released on 2013-06-30 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ageing infrastructure and declining water resources are major concerns with a growing global population. Controlling water loss has therefore become a priority for water utilities around the world. In order to improve efficiencies, water utilities need to apply good practices in leak detection. Leak Detection: Technology and Implementation assists water utilities with the development and implementation of leak detection programs. Leak detection and repair is one of the components of controlling water loss. In addition, techniques are discussed within this book and relevant case studies are presented. This book provides useful and practical information on leakage issues.

Design and Construction of Smart Cities

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Publisher : Springer Nature
ISBN 13 : 3030642178
Total Pages : 405 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Design and Construction of Smart Cities by : Ibrahim El Dimeery

Download or read book Design and Construction of Smart Cities written by Ibrahim El Dimeery and published by Springer Nature. This book was released on 2021-01-23 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on how to maintain environmental sustainability as one of its main principles, and it addresses how smart cities serve to diminish wastes and maintain natural resources by having clean green energy that is operated by new smart technology designs. Living in a smart city is not something of the future anymore, it is here, and it is being implemented all over the world. A smart city uses different types of electronic Internet of things (IoT) sensors to collect data and then use these data to manage assets and resources efficiently. The smart city concept integrates information and communication technology (ICT), and various physical devices connected to the IoT network to optimize the efficiency of city operations and services and achieve sustainable solutions to allow us to grow with proper management of our resources. Smart sustainable structures and infrastructures face the need of urban areas due to the growth of populations while in the same time save our environment. To achieve this, we need to revisit the conventional methods in design and construction and the conventional materials which are used now to optimize the design and provide smart solutions. In the past few years, the consumption of resources has been massive, and the waste produced from that consumption has been inconceivable. This is causing environmental degradation, which produces many environmental challenges, such as global climate change, excessive fossil fuel dependency and the growing demand for energy. As well as, discussing the challenges facing the civil engineering design and construction of smart cities components and presenting concepts and insight from experts and researchers from different civil engineering disciplines., this book explains how to construct buildings and special structures and how to manage and monitor energy.

The Issues and Challenges of Reducing Non-Revenue Water

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Publisher : Asian Development Bank
ISBN 13 : 9290921935
Total Pages : 108 pages
Book Rating : 4.2/5 (99 download)

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Book Synopsis The Issues and Challenges of Reducing Non-Revenue Water by : Rudolf Frauendorfer

Download or read book The Issues and Challenges of Reducing Non-Revenue Water written by Rudolf Frauendorfer and published by Asian Development Bank. This book was released on 2010-12-01 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving the efficiency of water utilities and reducing water losses are becoming top priorities in Asia, with its often-limited water resources and rapidly increasing urban population. This publication provides an up-to-date introduction to the subject matter, highlights the complexity of managing non-revenue water (NRW), offers guidance on NRW assessment, and recommends appropriate performance indicators. It is, to a large extent, based on the work of the Water Loss Specialist Group of the International Water Association in the last decade, and is amply complemented by the authors' practical experiences in Asia and in other countries around the world.

Infrastructure and Environment

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Publisher : Springer
ISBN 13 : 3030165426
Total Pages : 392 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Infrastructure and Environment by : Anna Krakowiak-Bal

Download or read book Infrastructure and Environment written by Anna Krakowiak-Bal and published by Springer. This book was released on 2019-05-13 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the 25th International Conference on Infrastructure and Environment (infraeco 2018) that focuses on rural problems connected with infrastructural equipment. In general, infrastructure issues are dedicated to urban areas while rural topics are linked to agriculture so this conference bridges these two aspects. It also explores ways to manage and separate conflicts between different and important needs of inhabitants, the environment, and other spatial users. The conference provides a forum for much needed cooperation between various scientific disciplines regarding these multidisciplinary problems and issues; hence, Infraeco 2018 draws together engineers, planners, consultants, land developers, and academics from across all disciplines of highway planning, design, operations, and engineering to presents effective practices and share current research results.

The Water Footprint Assessment Manual

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Publisher : Routledge
ISBN 13 : 1136538526
Total Pages : 224 pages
Book Rating : 4.1/5 (365 download)

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Book Synopsis The Water Footprint Assessment Manual by : Maite M. Aldaya

Download or read book The Water Footprint Assessment Manual written by Maite M. Aldaya and published by Routledge. This book was released on 2012-08-21 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: People use lots of water for drinking, cooking and washing, but significantly more for producing things such as food, paper and cotton clothes. The water footprint is an indicator of water use that looks at both direct and indirect water use of a consumer or producer. Indirect use refers to the 'virtual water' embedded in tradable goods and commodities, such as cereals, sugar or cotton. The water footprint of an individual, community or business is defined as the total volume of freshwater that is used to produce the goods and services consumed by the individual or community or produced by the business. This book offers a complete and up-to-date overview of the global standard on water footprint assessment as developed by the Water Footprint Network. More specifically it: o Provides a comprehensive set of methods for water footprint assessment o Shows how water footprints can be calculated for individual processes and products, as well as for consumers, nations and businesses o Contains detailed worked examples of how to calculate green, blue and grey water footprints o Describes how to assess the sustainability of the aggregated water footprint within a river basin or the water footprint of a specific product o Includes an extensive library of possible measures that can contribute to water footprint reduction

Assessment Framework for Urban Water Security

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Publisher : BoD – Books on Demand
ISBN 13 : 3737609608
Total Pages : 186 pages
Book Rating : 4.7/5 (376 download)

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Book Synopsis Assessment Framework for Urban Water Security by : Hassan Tolba Aboelnga

Download or read book Assessment Framework for Urban Water Security written by Hassan Tolba Aboelnga and published by BoD – Books on Demand. This book was released on 2021-01-01 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban water security is crucial for achieving sustainable development, peace, and human health and well-being. Framing urban water security is challenging due to the complexity and uncertainty of its definition and assessment framework. Several studies have assessed water security in widely divergent ways by granting priority indicators equal weight without considering or adapting to local conditions. This dissertation develops a new urban water security definition and assessment framework applicable to water scarce cities, with a focus on Madaba, Jordan. It takes a novel and systematic approach to assessing urban water security and culminates in integrated urban water security index (IUWSI) as a diagnostic tool and guide management actions. The dissertation suggests a new working definition of urban water security based on the United Nations (UN) Sustainable Development Goal 6.1 on safe drinking water for all and the human rights on water and sanitation as follows: The dynamic capacity of water systems and stakeholders to safeguard sustainable and equitable access to water of adequate quantity and acceptable quality that is continuously, physically and legally available at an affordable cost for sustaining livelihoods, human well-being and socioeconomic development, ensuring protection against waterborne pollution and water-related disasters, and for preserving ecosystems in a climate of peace and political stability. This proposed definition captures issues at the urban level of technical, environmental and socioeconomic indicators that emphasize credibility, legitimacy and salience. The assessment framework establishes a criteria hierarchy, consisting of four main dimensions to achieve urban water security: drinking water and human well-being, ecosystem, climate change and water-related hazards and socioeconomic aspects (together, DECS). The framework enables the analysis of relationships and trade-offs between urbanization, water security and DECS indicators. The dissertation also provides a structured analysis to understand how urban water is managed in intermittent water supply system, by conducting a water balance analysis after quantifying the components of water losses in Madaba’s water distribution network. The findings showed that Madaba's non-revenue water (NRW) amounted to annual loss of about 3.5 million m3, corresponding to financial losses of 2.8 million USD to the utility, of which 1.7 million USD is the cost of real losses. The dissertation provided an intervention strategy for strengthening infrastructure resilience and reducing leakage via the infrastructure, repair, economic, awareness and pressure (IREAP) framework. The IREAP framework provides a robust strategy to shift intermittent water supply (IWS) into continuous water supply. The IUWSI highlighted the state of water security in Madaba, Jordan and identified the means of implementation to move towards achieving urban water security based on the priorities for Madaba. The drinking water and human wellbeing dimension was the most important priority, receiving a weight of 66.22%, followed by ecosystem (17.15%), socioeconomic aspects (10.18%), and climate change and water-related hazards (6.45%) dimensions. The IUWSI indicated that the urban water security in Madaba is reasonable with a score of 2.5/5 and can meet the minimum requirements in several dimensions, but nonetheless, it has many loopholes to cover. Gaps are clear in the climate change and water-related hazards, and socioeconomic dimensions with scores of 1.6/5 and 2.237/5 respectively. Additionally, specific shortcomings are found in indicators such as water availability, reliability, diversity, and public health. The IUWSI framework assists with a rational and evidence-based decision-making process, which is important for enhancing water resource management in water-scarce cities

Identifying and Reducing Losses in Water Distribution Systems

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Publisher :
ISBN 13 :
Total Pages : 474 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Identifying and Reducing Losses in Water Distribution Systems by : James W. Male

Download or read book Identifying and Reducing Losses in Water Distribution Systems written by James W. Male and published by . This book was released on 1983 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Water and Wastewater Management

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Author :
Publisher : Springer Nature
ISBN 13 : 3030952886
Total Pages : 277 pages
Book Rating : 4.0/5 (39 download)

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Book Synopsis Water and Wastewater Management by : Müfit Bahadir

Download or read book Water and Wastewater Management written by Müfit Bahadir and published by Springer Nature. This book was released on 2022-03-25 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume addresses the situation of water and wastewater management from a global angle, underpinned by selected case studies. Without doubt, water and wastewater management are among the greatest challenges of our century, and there is also no doubt that the challenges posed by climate change will become even greater. However, most efforts, especially in developing countries but also in the so-called developed countries, have been less than optimal or not optimal at all. In particular, there are still too many people who have to live without clean water and decent sanitation. Today, 2.2 billion people lack access to safely managed drinking water and wastewater, and 4.2 billion people lack safely managed sanitation services. The question, why this is so and why in many cases in developing countries, is discussed in this book among other urgent water and wastewater management issues. The publication of this book is the start of a book series that in more detail critically reviews, discusses, and analyzes the water and wastewater situation and management in different regions and countries worldwide.