Water is crucial for sustaining life and supporting social and economic activities. Its importance cannot be overstated, as it is essential for sustenance, sanitation, health, and security. However, increasing global population and rapid socio-economic development place significant pressure on water resources worldwide. Therefore, water security is a critical global concern today. The book “Water for All: A Tribute to Prof. Dr. Ismail Abustan” presents an adaptive approach to water management, highlighting various studies and perspectives within the context of Integrated Water Resources Management (IWRM). This approach is particularly relevant in Malaysia, aiming to support economic and social development while ensuring ecosystem sustainability.