Urbanization has progressed in parallel with rapid economic development in Asia, and people living in the region’s megacities face severe urban environmental problems, with the water-environment problem being especially serious. Such cities must develop the infrastructure to provide clean water and process sewage in densely populated areas.
Meanwhile, water-supply and sewerage services in Japan are conducted by municipalities as a public service, but their revenues are shrinking in response to a decreasing birthrate, an aging population, and the waterconservation movement.
In this study, we investigated the overseas expansion of Japanese public water services as an effort to improve the living environment in developing Asian countries and to advance the sustainability of public water services. (…)