This document discusses various economic and financial instruments for integrated water resource management. It examines in detail the main financing options for water systems, including the pros and cons of each option and how they can be applied in different circumstances. The options covered include water and sewerage charges, government grants and loans, external grants such as development aid, philanthropic partnerships, commercial loans and bonds, and private equity. It also discusses how risk guarantees can be used to facilitate financing. The document provides examples of how these instruments have been applied to finance activities like flood risk management. It concludes by suggesting a role play exercise where participants negotiate a funding scheme between a central government and local authority to improve local access to water and sanitation.