Sources and nature of water quality problems in Asia and the Pacific

This publication details a study, (phase I) based on case studies and relevant data provided by national experts, intended to provide a clear picture of the state of water quality in rivers of countries in Asia and the Pacific, to identify the sources of water quality problems in rivers and to provide a basis for the development of a practical manual and guidelines for the protection and rehabilitation of contaminated rivers (phase II - 1998). The study begins with an overview of the general features of selected rivers in the ESCAP region, concentrating on those with water quality problems, and a review of models for coordinated water management in countries of the region. A general discussion of main pollutants of concern across the ESCAP region, chiefly in rivers, is followed by a description of water quality problems and their impact in selected countries. The management of water quality in rivers and activities planned for water quality protection and rehabilitation in specific countries throughout the region are outlined. Case studies on water quality issues in selected countries in the ESCAP region focus on institutional arrangements for water quality management, sources and nature of water quality problems, and management activities being undertaken in the countries concerned. Conclusions and recommendations stress the success of a multisectoral and multidisciplinary approach to water resources management aimed at optimizing sustainable development.