Program for Capacity Building in
Global Water-Environmental Engineering



Strength of Japanese technology in the field of water environment

History of Japan’s approach to water environmental issues and the strength of Japan

Japan has developed the culture of high-productivity rice cultivation and industrialized herself to the world’s top level under wide varieties of conditions with a wide range of climates from subtropical to subarctic climate and a diversity of topography from 3000-meter mountains to lowlands below sea level.

Cyclic drafts and floods have been controlled by forest preservation, irrigation and flood control measures. Ways have been found to share limited water. The wisdom and skills to carefully use water that the Japanese have developed under diverse natural environment is applicable to the solution of water-related problems in any region, in the monsoon Asia region in particular.

Water demand has increased with the rapid postwar urbanization and economic growth. Efforts have been made for improving water supply systems through the development of water resources infrastructure systems and the improvement of water recovery ratio by preventing water leakage and developing industrial water purification technology.

In response to the environmental deterioration induced by domestic and industrial wastewater produced by rapid urbanization and industrialization, water quality was improved by regulating wastewater discharge, developing sewerage systems and sophisticating wastewater treatment. Leading-edge wastewater treatment technology possessed by private sector companies and high-level water supply and sewerage systems management know-how of local municipalities have made the above a reality.

Japan has also accumulated sufficient experience in the development of water-related social infrastructure and human development in developing countries through the official development assistance (ODA) and other projects.

Reference: Final report of the "Water Security Committee", a specially designated committee, July 2, 2008

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