インドネシア・ジョグジャカルタ周辺地域住民の生活用水の利用について

Abstract

In many developing countries, today, modern water works and sewage water works systems are constructed with technical and economical aids of advanced nations. In those countries, there are original and peculiar water use systems according to their own water environment, so that projects, that are not under such view points, bring important effects on the environment. It is necessary to understand the conditions of water and water use in such countries. Research was made in Yogyakarta in central Java Island in August 1985, from following three points ; (1) research on condition of water environment and water use in several communities in DIY, (2) condition of domestic water use in two areas, Perumnas and Kotagede nearby Yogyakarta city, and (3) condition and consciousness on common or communal water use. Results of this research are (1) domestic water use in communities in DIY is mainly depend on condition of water resources characterized by topographical and geologocal conditions, (2) in Perumans, communal water supply system runs insufficiently, so that people devise the system with using other water resources skillfuly, (3) average water consumption per capita per day in two areas is 125 liter, (4) to supplement for lack of water and home economy, not only communal wells but also private wells are used by every one, so that these wells alternate the public system. From these results, improvement of water system should be desired based on deep understanding of conditions of water resources system and actual water use.