For a Sustainable Urban Water Cycle

Yuriko Koike of Dialogue with the world’s leaders Share policies and know-how From Edo to Tokyo

Courtesy of Postal Museum

Water supports the city Densely populated megalopolis Tokyo Tokyo

Tokyo Bay Tokyo has various water restrictions Prepared using Geospatial Information Authority of Japan (GSI) tile (Japan Landsat mosaic imagery） Data sources: Landsat8 images (GSI, TSIC, GEO Grid/AIST), Landsat8 images (U.S. Geological Survey), Bathymetric charts (GEBCO) Water is Tokyo’s pride Global population increase and urbanization 7.5 bil

2.5 bil Urban population over 50%

1950 2017 Glaciers 2.52%

Oceans 97.47%

Rivers/Lakes Usable water 0.01% Urban water cycle

Rain Dam

River River/Ocean

Purification Plant Water Reclamation Center Household Water Supply Sewerage Environment-related Risk Flooding

2018 Heavy Rain in West Japan Cooperating to find solutions to environmental challenges

C40 Mayors Summit Disaster-related Risk Earthquake

Great Hanshin-Awaji Earthquake Photo courtesy of City Disaster-related Risk Earthquake

Great East Japan Earthquake Photo courtesy of Public Enterprise Bureau Disaster-related Risk Earthquake

Liquefaction after the Great East Japan Earthquake

‘MOTTAINAI’ “People” and “Awareness”

差し替え予定 Advanced Technologies and Skills “ 3% ”

・Effective use of water resources ・Reduce CO2 emissions

Leak Detection Advanced Technologies and Skills Sewage Pipe Renewal method

Under construction After construction Robust Systems

Infrastructure Management Three Cities to Create a New Tokyo

FIRST Safe City U Diversity TOKYO Diverse City U R Smart City E Smart City Initiatives Water Supply and Sewerage System For a Smart Water System

SMART Trial Project Olympic and WATER Paralympic Smart Meter SYSTEM Legacy + Smart Meter Smart Grid

2022 2025

Contributing to the World