Losses in Water Distribution Losses

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Losses in Water Distribution Networks
A Practitioner's Guide to Assessment, Monitoring and Control

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.

Contents

1.Introduction

2.Assessing Losses
Defining Water Loss and Leakage
Comparisons of Water Loss
Experience of the UK
Water Industry
Water Balance - UK Methodology
The IWA International Standard· An Example Water Balance Calculation Measuring or Estimating the Components of Water Balance Techniques for Reviewing the Network Operating Practices Techniques for Quantifying Leakage

3. International comparisons
Performance indicators and target setting The IWA performance measures structure Non revenue water and financial performance indicators Apparent losses Real losses Performance indicators in England and Wales References

4. Developing a Strategy
Introduction
Economics of water loss
Setting targets for leakage
The impact of regulation on the water industry A practical approach Computer models to assess losses Designing and introducing a strategy References

5. Upgrading the Network
Introduction
The zoning concept
Flow metering
Zonal metering
Network records and recording systems
Surveying the network
Mains renewal and rehabilitation to reduce leakage

6. Leakage Monitoring and Control
Criteria and choice of methodology
Sectorisation and zonal monitoring
Leak detection and location in DMAs
Leak detection policies and procedures
Repair techniques
Leak detection in networks with intermittent supplies References

7. Pressure Management
Introduction
Benefits of pressure management
Potential problems
The relative importance of pressure management Pressure/leakage relationships Economics and cost benefit analysis Policy issues Design of pressure control schemes Operation of PRVs Factors restricting the scope for pressure reduction Pressure monitoring Cavitation PRV installation References

8. Changing Policies
Introduction
Customer demand
Options for meeting increased demand
Demand management policies
Customer metering
Case studies
References

9. Ensuring Sustainability
Introduction
Staffing levels
Education and training
Operation and maintenance
Assessing and monitoring performance

10.Case Studies
Case Study 1. An evaluation of the water distribution system for system losses in Sarina Shire County, Australia Case study 2. Leakage Control - Italy Case study 3. Leakage control and unaccounted for water analysis - Water Works Corporation, Malta

Appendices
Appendix A. Potential savings from leakage management Appendix B. Conducting a water use audit Appendix C. Example training programmes Appendix D. Conducting a Water Use Audit Appendix E. Example Training Programmes

Price: £80.00 / US$150.00 / €135.00 (all plus post & packing)