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The Issues and Challenges of Reducing Non-Revenue Water

Publication | December 2010
The Issues and Challenges of Reducing Non-Revenue Water

This publication provides an introduction to water utilities and reducing water losses in Asia, highlights the complexity of managing non-revenue water (NRW), offers guidance on NRW assessment, and recommends performance indicators.

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.

Contents 

  • Foreword
  • Introduction
  • Non-Revenue Water: Definition, Terminology and Approach
  • Non-Revenue Water Estimates for Asia
  • Non-Revenue Water Impact on Water Utility Efficiency
  • Non-Revenue Water Impact on Customers
  • Non-Revenue Water and the Urban Poor
  • The Importance of Establishing a Water Balance
  • What You Should Know about Physical Losses
  • What You Should Know about Leakage Reduction
  • What You Should Know about Commercial Losses
  • The Need for Appropriate Performance Indicators
  • Addressing Community Behavior
  • Outsourcing of Non-Revenue Water Management Activities
  • The Future
  • Annex 1: Water Balance Definitions
  • Annex 2: List of Key Publications