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History of best polocies for world-class Arisu
100-year History of Seoul’s Water Supply
Contents
1. Arisu History
Tap Water Supply in Metropolitan Areas: Tap Water Supply in Metropolitan Areas through the Introduction and Management of Large-capacity Production Facilities 6
2. Water Production
01 Raw and Purified Water Quality Testing: Testing the quality of both raw and purified water to ensure the highest quality of Arisu 13
02 Advanced Water Purification System: World-class water purification system 19
03 Chlorine Re-dispersion Facility: Reduction of disinfection odor in tap water 22
04 Arisu Quality Verification System: Building trust with water faucet inspection 24
05 Introduction of ISO 22000 (Food Safety Management System): Food hygiene and safety control for the entire process from raw water in the Hangang River to faucets 26
3. Water Distribution
01 Water Supply Without Interruption, Even During an Emergency: Minimizing citizen inconvenience through swift response to unexpected accidents, such as leaks 29
02 Revenue Water Ratio & Leak Management: Achieving the Highest Revenue Water Ratio in the World 35
03 Water Supply GIS and 3D Spatial Information System: Smart water supply facility management by establishing a spatial information system for water supply facilities 41
04 Old Pipe Network Maintenance Project: Systemic Maintenance based on the “Comprehensive Old Pipe Maintenance Plan 47
05 Shifting to Direct Supply System for Small and Medium-scale Apartments: Supply clean tap water by removing rooftop water storage tanks and shifting to the direct water supply system through which water does not pass through storage tanks 52
06 Frost Protection for Water Meters: Minimizing water supply interruptions by introducing measures to protect water meters from freezing and bursting 56
4. Operation & Management
01 Arisu INFO System (next-generation billing management system) Re-establishment: systematic billing management with new system and institution 61
02 Arisu Integrated Information System: Cutting-edge Smart Water Management System for Safe Arisu 65
03 New and Renewable Energy: Expansion of New and Renewable Energy Business 70
04 Arisu Total Service: Proactive, comprehensive approach to complaint handling to enhance citizens‘ satisfaction with tap water service 75
05 Overseas Advance: Advancing overseas cities with our advanced waterworks technology 81
06 Water Supply R&D: leading the advancement of water supply technologies through research and development 86