Evaluation of Water Supply Systems under the Population Dynamics ～Case Study in Tama New Town (NT)～

Abstract

 In the depopulating society, water supply systems would be affected by the shift of water demand patterns arising from the transition of the city structure. In this study, five scenarios of the future urban structure were proposed for a New Town at suburban Tokyo, and the water distribution network was examined in terms of the hydraulic retention time in pipelines, replacement cost of old water distribution pipes, and pump energy for water supply to tall buildings. In addition, restructuring of the distribution systems was suggested and evaluated for each scenario.