This special issue presents an integrated and operational framework for circular water management as a strategic lever for climate resilience, sustainable development, and territorial transformation. Moving beyond traditional linear approaches of "capture, treat, distribute and discharge", it emphasizes a systemic, interdisciplinary perspective that links water, energy, food, waste, and climate within the principles of the circular economy. The work combines rigorous scientific analysis, technological innovation, and governance frameworks to offer practical, implementable solutions for managing water resources efficiently and sustainably.

A distinctive feature of the special issue is its strong technological and digital focus, exploring artificial intelligence, the Internet of Things (IoT), sustainable desalination, and smart sensors, to optimize water management. It also provides territorially grounded case studies from Morocco, the Mediterranean, and other semi-arid regions that are often underrepresented in the international literature. Through forward-looking scenarios toward 2050 and operational roadmaps, the special issue enables stakeholders to anticipate challenges and implement strategies that enhance resilience, reduce water stress, and support socio-economic development.

The work is designed for a broad yet specialized audience, including researchers, advanced students, policymakers, infrastructure managers, industry professionals, and NGOs involved in water management, environmental sustainability, and climate adaptation. It bridges theory and practice by offering actionable tools, indicators, and platforms for decision-making, while maintaining high academic rigor and accessibility.

This special issue complements existing literature by providing a holistic approach rarely seen in current publications. Unlike works that focus solely on technical solutions, climate impacts, or nature-based methods, it articulates a comprehensive vision connecting science, technology, policy, and territory. By positioning water as a strategic resource and transformative driver, it addresses gaps in the literature regarding systemic integration, underrepresented geographic contexts, and the application of advanced technologies to water circularity. Ultimately, the special issue transforms water challenges into opportunities for sustainability, resilience, and equitable development, serving as a reference for research, policy, and practice worldwide.

Circular water management; 

Water-Energy-Food Nexus; 

Sustainable water resources; 

Climate change adaptation; 

Smart water technologies; 

Artificial intelligence in water; 

Wastewater reuse; 

Desalination sustainability; 

Water governance; 

Industrial symbiosis; 

Territorial resilience; 

Environmental innovation.