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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.
Water and Wastewater companies operating all around the world have
faced rising asset management and replacement costs, often to
levels that are financially unsustainable. Management of investment
needs, while meeting regulatory and other goals, has required: A
better understanding of what customers demand from the services
they pay for, and the extent to which they are willing to pay for
improvements or be compensated for a reduction in performance
Development of models to predict asset failure and to identify and
concentrate investment on critical assets Improved management
systems Improved accounting for costs and benefits and their
incorporation within an appropriate cost-benefit framework
Incorporation of risk management techniques Utilisation of advanced
maintenance techniques including new rehabilitation failure
detection technologies Enhancements in pipeline materials,
technologies and laying techniques. These papers developed from
LESAM 2007 for inclusion in Strategic Asset Management of Water
Supply and Wastewater Infrastructures are focused on the
techniques, technologies and management approaches aiming at
optimising the investment in infrastructure while achieving
demanded customer service standards, and they provide an
opportunity to gain access to the latest discussion and
developments at the leading-edge in this field. This book will be
essential reading for utility operators and managers, regulators
and consultants.
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