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Preface

This ‘International Source Book on Environmentally Sound Technologies for Wastewater and Stormwater Management' is a sequel to IETC's successful publication ‘International Source Book on Environmentally Sound Technologies for Municipal Solid Waste Management'.  The urgent need for information on how to deal with wastewater is clearly shown by the fact that nearly 3 billion people are without adequate sanitation and its impact on health, medical bills, consequent loss of economic productivity and environmental degradation.

UNEP-DTIE-IETC has a mandate to assist in the transfer of environmentally sound technologies to address urban environmental problems. Our response to the urgent problem noted above and expressed in the numerous enquiries on the subject is in part the compilation of a source book and the dissemination of the information as widely as possible. Training materials based on the source book are being simultaneously produced. Besides the printed version the Source Book and Training Materials are also made available in CD-ROM version, and also through IETC’s web based data base maESTro. A pilot training workshop for the Source Book and Training Materials was conducted in Rio de Janeiro on 27 - 31 March 2000 with participants from countries in Central and South America.

Begun with an International Experts Meeting in Osaka, 6 - 8 May 1998, jointly organised by IETC in collaboration with WHO UEH, GEC, ILEC, I am pleased that the ideas, concepts and critiques expressed at that meeting have come to fruition in this publication. While we do not claim to have the 'complete' solution for the complex water and sanitation problems faced by many nations, especially in the developing world, this book is offered as a guide that will lead planners and managers to many other possibilities and contacts.

This Source Book complements UNEP's Practical Policy Guidance for the implementation of the Global Programme of Action (GPA) for the protection of the marine environment from land based activities. Much of the pollution from land based activities come with wastewater and stormwater. Though approached from different angles the two publications are consistent in their message.

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