In order to solve present and future water concerns, this Collection brings together interdisciplinary research centered on technology innovation and sustainable engineering solutions. Recognizing the essential role of water in public health, industrial development, environmental protection, and energy systems, it places an emphasis on the development of cutting-edge technologies for enhancing water quality, treatment efficiency, resource recovery, and sustainable water usage.

Emerging water treatment and remediation technologies, such as sophisticated materials, adsorption procedures, membrane systems, wastewater treatment, desalination, pollutant monitoring, and circular water management techniques, are given special consideration. The collection also examines the expanding relationship between energy and water systems, emphasizing resource recovery, decentralized treatment systems, energy-efficient treatment technologies, and innovations that support sustainable energy development and water security at the same time.

This Collection aims to promote high-impact research that integrates fundamental science, applied engineering, and technological innovation to develop resilient and sustainable solutions for future water and energy challenges.

Keywords: Sustainable materials, water contamination; advanced water treatment; integrated water management; adsorption process.

This Collection supports and amplifies research related to SDG 6.

Scientific and technological advancements are improving water governance, modelling and monitoring that are nowadays more and more supported by a wealth of high resolution digital earth data and numerical simulations. Earth observation, geospatial and hydrodynamic models allow to develop effective studies of complex physical dynamics of urban, land and fluvial processes and features. Nonetheless, despite the greater availability of accurate natural resource and risk knowledge bases and management plans, nuisance effects of natural disasters and climate change are increasingly impacting the safety of human settlements from global to local scales. While the quest for tackling water risk and resource knowledge gaps continues, there is a growing consensus in the scientific community that science-driven technological advancements cannot address the climate crisis alone. Transdisciplinary approaches are needed interlinking earth and water sciences, social sciences and humanities in order to assess and consider the human component. Cultural, social and behavioural processes play a pivotal role for operationalizing sustainable earth, hydrological and geophysical science and management approaches while considering mutual interdependencies of heterogeneous human-water evolving phenomena. This Collection aims to stimulate the development of synergies of water, earth and environmental data and models with qualitative and quantitative social, economic, historical and behavioural studies focusing on human-water assessments and investigations. From geospatial to artificial intelligence, from stakeholder engagement to citizen science, from disaster risk reduction to Water Energy Food Ecosystem (WEFE) Nexus, from international governance and policies to regional guidelines and case studies, from historical to future projections, this Collection is prone to receive a wide variety of topics addressing the need of transdisciplinary technological, policy and engineering approaches to address hydro-climate challenges.

Keywords: hydrology, geomorphology, geospatial analysis, citizen science, floods, droughts, disaster risk reduction, WEFE Nexus, socio-hydrology, stakeholder engagement, human-water.

This Collection supports and amplifies research related SDG 6, SDG 11 and SDG 13.