The Best Practices Manual for Integrated Water Resources Management (IWRM) in the West Africa Economic and Monetary Union (WAEMU) Region highlights the critical need for effective water resource management to achieve sustainable development goals. It serves as a comprehensive guide for policymakers, practitioners, and stakeholders, presenting key challenges and showcasing successful case studies from the region. The manual emphasizes the importance of political commitment, stakeholder engagement, and innovative financing mechanisms, providing practical examples and recommendations to inspire and guide IWRM implementation across the region.