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Water publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Research on Microplastic Pollution in Water Environment submission deadline 25 Jun 2026 | 2 articles | Viewed by 3038 | Submission Open
Keywords: microplastics; aquatic pollution; water contimination; marine microplastics; biodiversity; microplastic detec-tion; nano-microplastics; policy and regulation on microplastics; bioaccumulation; human health
(This special issue belongs to the Section Water Quality and Contamination)
Intelligent Water Networks: Advanced Sensing, Real-Time Analytics, and Adaptive Management for Future Water Challenges submission deadline 25 Jun 2026 | 2 articles | Viewed by 2954 | Submission Open
Keywords: intelligent water systems; advanced sensors; real-time analytics; machine learning; digital twins; edge computing; adaptive management; IoT; water quality monitoring; predictive modeling                            
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Energy Use Assessment and Management in Wastewater Systems submission deadline 25 Jun 2026 | 2 articles | Viewed by 2094 | Submission Open
Keywords: carbon footprint reduction in wastewater systems; energy efficiency; energy monitoring and optimization; energy recovery; renewable energy; sustainable wastewater management
(This special issue belongs to the Section Water-Energy Nexus)
Water-Saving and Energy-Efficient Irrigation Technologies and Equipment
edited by
submission deadline 25 Jun 2026 | 2 articles | Viewed by 1398 | Submission Open
Keywords: sprinkler irrigation; micro sprinkler irrigation; water-saving management; irrigation technical parameters; energy consumption optimization; theory and technology; low pressure atomization; comprehensive technical index; irrigation systems; automated control systems; sprinkler head; micro sprinkler; sprinkler design; remote monitoring; irrigation optimization; water distribution uniformity; sprinkler efficiency
(This special issue belongs to the Section Water, Agriculture and Aquaculture)
Applications of Remote Sensing and GISs in River Basin Ecosystems, 2nd Edition
edited by Jiren Xu, , and
submission deadline 25 Jun 2026 | 1 articles | Viewed by 1169 | Submission Open
Keywords: remote sensing; GISs; river basin ecosystems; water quality monitoring; land use and land cover change; hydrological processes; ecosystem dynamics; environmental conservation; spatial analysis; sustainable management
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Systemic Footprints of the Water-Energy-Carbon Nexus: From Life Cycle Assessment to Integrated Modeling
edited by
submission deadline 25 Jun 2026 | 1 articles | Viewed by 870 | Submission Open
Keywords: life cycle assessment (LCA); water– energy– carbon nexus; environmental footprints; sustainability assessment; coupled systems; trade-offs and synergies; interdisciplinary approaches; resource management
(This special issue belongs to the Section Water-Energy Nexus)
Biodiversity Assessment and Conservation in High-Altitude Freshwater Systems submission deadline 25 Jun 2026 | 1 articles | Viewed by 859 | Submission Open
Keywords: freshwater; community; high altitude; assessment; management
(This special issue belongs to the Section Biodiversity and Functionality of Aquatic Ecosystems)
Methods and Tools for Sustainable Agricultural Water Management, 2nd Edition
edited by Hui Yang, Manoj K. Shukla and
submission deadline 25 Jun 2026 | 1 articles | Viewed by 737 | Submission Open
Keywords: crop water relations; water productivity; deficit/salinity irrigation; conservation agriculture; regional water management
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
AI (Gen) and Machine Learning Applications in the Water and Wastewater Sector
edited by Taher Abunama
submission deadline 25 Jun 2026 | Viewed by 406 | Submission Open
Keywords: AI (Gen); ML; LLM; digital twins; wastewater treatment; drinking water treatment; process control and optimisation; hybrid modelling; water quality prediction; anomaly detection and fault diagnosis; energy and emissions reduction
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Climate Risk Management, Sea Level Rise and Coastal Impacts, 2nd Edition
edited by , Nathan Downs and Lila Singh-Peterson
submission deadline 25 Jun 2026 | Viewed by 224 | Submission Open
Keywords: oceanic changes; climate risk management; deep learning; climate change; sea level rise; remote sensing; artificial intelligence; machine learning; coastal changes; oceanography; wetland changes; mangrove changes
(This special issue belongs to the Section Oceans and Coastal Zones)
Social, Cultural, and Economic Factors Directly and Indirectly Influencing Water Resources and Conservation Outcomes
edited by and Kristin E. Gibson
submission deadline 27 Jun 2026 | 3 articles | Viewed by 9401 | Submission Open
Keywords: water resource communication; environmental education; water conservation behavior; social evaluation methods; watershed management; behavioral modification
(This special issue belongs to the Section Water Use and Scarcity)
Advances in Hydrogeological Investigations: Field Monitoring, GIS, AI, Remote Sensing, Geophysical Techniques, and Hydrochemical Analysis submission deadline 30 Jun 2026 | 8 articles | Viewed by 13829 | Submission Open
Keywords: remote sensing; geophysical methods; geographical information system (GIS); joint interpretation; hydrogeophysical investigations; groundwater investigation; groundwater monitoring; groundwater assessment; groundwater sustainability; aquifer characterization; sustainable water management; groundwater quality; groundwater contamination; groundwater– surface water interaction; groundwater resources; advanced groundwater modeling; investigation of aquifer heterogeneities; regional and transboundary groundwater
(This special issue belongs to the Section Hydrogeology)
Assessment of Groundwater Quality and Pollution Remediation
edited by Yong Qian and
submission deadline 30 Jun 2026 | 10 articles | Viewed by 13465 | Submission Open
Keywords: groundwater quality; hydrogeochemical processes; environmental background values; high-fluoride groundwater; emerging pollutants; pollution prevention and control zoning; risk control; mine pollution control; groundwater pollution remediation
(This special issue belongs to the Section Hydrogeology)
Advances in Swimming Pool Hygiene Safety and Spa Research
edited by Athena Mavridou, Georgia Mandilara and
submission deadline 30 Jun 2026 | 6 articles | Viewed by 11352 | Submission Open
Keywords: swimming pools; hygiene safety; water microbiology; water chemistry; disinfection
(This special issue belongs to the Section Water and One Health)
The Safety Operations and Intelligent Control of Water Network Engineering Systems submission deadline 30 Jun 2026 | 5 articles | Viewed by 9970 | Submission Open
Keywords: water network safety; intelligent control systems; risk assessment; IoT and AI integration; infrastructure reliability
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Advanced Research in Non-Point Source Pollution of Watersheds
edited by , Tao Wang, Yan Xu and Cen Meng
submission deadline 30 Jun 2026 | 5 articles | Viewed by 8108 | Submission Open
Keywords: non-point source pollution; landscape patterns; ecological treatments; pollutant removal and resource recovery; emerging contaminants; agriculture green development; watershed intelligent management
(This special issue belongs to the Section Water Quality and Contamination)
Application of Big Data and Machine Learning in Hydrological Forecasting and Water Resource Management
edited by and
submission deadline 30 Jun 2026 | 5 articles | Viewed by 7999 | Submission Open
Keywords: big data; machine learning; physics-informed machine learning; deep learning; hydrology; explainable AI; water resources; hydrological forecasting
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Sustainable Water Resources Management in a Changing Environment
edited by , Emiliana Valentini and
submission deadline 30 Jun 2026 | 3 articles | Viewed by 5316 | Submission Open
Keywords: geomatics; GIS and remote sensing applications; water and landscape management; the management of natural resources (soil; water; sediment) from dams; channels and river banks; water– climate interactions; earth surface processes; coastal erosion and river drainage networks; landslides and flooding; natural hazards; wetland reclamation; “ Ecologically sustainable” water and wastewater treatment and management
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
Climate Change Uncertainties in Integrated Water Resources Management
edited by Thomas Ramsey and Liang Yuan
submission deadline 30 Jun 2026 | 3 articles | Viewed by 4949 | Submission Open
Keywords: climate change; integrated water resources management (IWRM); transboundary rivers; uncertainty; sustainability; water conflict
(This special issue belongs to the Section Water and Climate Change)
Sustainable Research on Water Quality Monitoring and Nutrient Pollution Control
edited by , Yi Hong and
submission deadline 30 Jun 2026 | 2 articles | Viewed by 3651 | Submission Open
Keywords: sustainable water management; eutrophication; harmful algal blooms; hypoxia; environmental DNA; digital twin; IoT and remote sensing; machine learning and AI; biogeochemical modeling; ecosystem restoration
(This special issue belongs to the Section Water Quality and Contamination)
Monitoring and Degradation of Drugs and Organic Pollutant in Wastewater submission deadline 30 Jun 2026 | 2 articles | Viewed by 2251 | Submission Open
Keywords: emerging pollutants; persistent; mobile; and toxic compounds; high-resolution mass spectrometry; transformation products; extraction and preconcentration techniques
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Water Environment Modeling, Simulation, Informatics, and Big Data Mining
edited by , Baiyin Liu and Yan Chen
submission deadline 30 Jun 2026 | 2 articles | Viewed by 2171 | Submission Open
Keywords: water environment; environmental monitoring; environmental informatization; environmental big data mining; environmental modeling; environmental simulation; AI application; environmental data analysis
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Extreme Rainfall and Hydrological Extremes: Monitoring and Prediction Using Machine Learning and Physical Modeling
edited by and Zhaoqiang Zhou
submission deadline 30 Jun 2026 | 1 articles | Viewed by 2046 | Submission Open
Keywords: extreme rainfall; prediction; hydrology; remote sensing; early warning; climate change; machine learning; disaster risk; data assimilation; flood forecasting
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Impacts of Climate Change on Water Resources and Water Risks, 3rd Edition
edited by , Fei Chen, Fei Wang, and
submission deadline 30 Jun 2026 | 2 articles | Viewed by 2016 | Submission Open
Keywords: climate change; water resource management; drought; flood; remote sensing
(This special issue belongs to the Section Water and Climate Change)
Carbon Storage in Lake Sediments Under Climate Change submission deadline 30 Jun 2026 | 2 articles | Viewed by 1807 | Submission Open
Keywords: carbon cycle; drought; lake; dam reservoir; carbon stocks; humus substances; fulvid and humic acids; sediments; indicators
(This special issue belongs to the Section Water and Climate Change)
Soil Water Use and Irrigation Management, 2nd Edition submission deadline 30 Jun 2026 | 1 articles | Viewed by 1647 | Submission Open
Keywords: water management; crop water requirements; soil hydraulic properties; sustainable development of rural areas; soil fertility; drip irrigation; soil and water relationship; evapotranspiration; precision agriculture; irrigation and drainage systems
(This special issue belongs to the Section Soil and Water)
Impact of Climate Changes on Humid and Arid Geomorphic Systems submission deadline 30 Jun 2026 | 1 articles | Viewed by 1090 | Submission Open
Keywords: impacts of climate changes; hillslope systems; fluvial systems; arid and semi-arid geomorphic systems; coastal systems; karst systems
(This special issue belongs to the Section Water and Climate Change)
Marine and Coastal Algae: Biodiversity, Invasive Species, and Ecosystem Conservation submission deadline 30 Jun 2026 | 2 articles | Viewed by 1029 | Submission Open
Keywords: coastal ecosystems; ecosystem conservation; environmental DNA; habitat degradation; invasive species; long-term monitoring; macroalgae; macroalgal blooms; marine biodiversity; marine protected areas; metabarcoding; non-indigenous species; restoration
(This special issue belongs to the Section Biodiversity and Functionality of Aquatic Ecosystems)
Analysis of Extreme Precipitation Under Climate Change, 2nd Edition
edited by
submission deadline 30 Jun 2026 | 1 articles | Viewed by 901 | Submission Open
Keywords: extreme precipitation; climate change; downscaling; compound events; hydrological impact
(This special issue belongs to the Section Water and Climate Change)
Reimagining Sustainable Resource Recovery in Wastewater Treatment Processes submission deadline 30 Jun 2026 | 1 articles | Viewed by 816 | Submission Open
Keywords: wastewater; treatment; sustainable; resource recovery
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Innovative Approaches in Hydrology Applied to the Study of River and Lakes Systems submission deadline 30 Jun 2026 | 1 articles | Viewed by 813 | Submission Open
Keywords: innovative hydrological methods; river and lakes systems; water quality; physicochemical properties of bottom sediments; remote sensing in hydrology; numerical modeling; hydrological monitoring; water resource management; monitoring techniques; sedimentation processes
(This special issue belongs to the Section Hydrology)
Research on Watershed Ecological Restoration and Water Pollution Control
edited by , Cheng Shen and
submission deadline 30 Jun 2026 | 1 articles | Viewed by 686 | Submission Open
Keywords: watershed ecological restoration; water pollution control; novel materials; emerging contaminants; greenhouse gas emissions; sustainability; ecological engineering; resource recovery; intelligent watershed management systems
(This special issue belongs to the Section Water Quality and Contamination)
Multi-Objective Optimization for Sustainable Groundwater Management
edited by and Nafyad Serre Kawo
submission deadline 30 Jun 2026 | Viewed by 438 | Submission Open
Keywords: multi-objective optimization; groundwater management; sustainable water resources; decision support systems; aquifer modeling
(This special issue belongs to the Section Hydrogeology)
New Challenges in PFAS Removal from Contaminated Water
edited by , Yue Zhi and
submission deadline 30 Jun 2026 | Viewed by 307 | Submission Open
Keywords: PFAS; per- and polyfluoroalkyl substances; treatment; destructive technologies; adsorption
(This special issue belongs to the Section Water Quality and Contamination)
Advances in Microbial Technology for Sustainable Wastewater Treatment submission deadline 30 Jun 2026 | Viewed by 264 | Submission Open
Keywords: biotechnology; circular economy; contaminants of emerging concern; environmental microbiology; environmental protection; wastewater treatment
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Hydrogeological and Hydrochemical Research in Aquifers submission deadline 30 Jun 2026 | Viewed by 248 | Submission Open
Keywords: hydrogeology; groundwater modeling; natural tracers; isotopes; heat transport; coastal aquifers; saltwater intrusion; groundwater– surface water interaction; hydrogeophysics; managed aquifer recharge; aquifer vulnerability; groundwater resources; hydrogeochemistry; contamination; groundwater quality: field experiments; lab experiments
(This special issue belongs to the Section Hydrology)
Research on Emerging Pollutants in Aquatic Systems
edited by and Monica Escolà
submission deadline 30 Jun 2026 | Viewed by 247 | Submission Open
Keywords: emerging contaminants; aquatic ecosystems; pharmaceuticals; PFAS; microplastics; nature-based solutions; water treatment; ecotoxicology; risk assessment; environmental monitoring; pollutant fate and transport
(This special issue belongs to the Section Water Quality and Contamination)
Recent Advances in Maritime Energy Systems
edited by and
submission deadline 30 Jun 2026 | Viewed by 221 | Submission Open
Keywords: development and utilization of marine renewable energy; computational fluid dynamics and numerical simulation; oscillating water column wave energy converter; air turbine; hydrofoil; vertical-axis turbine
(This special issue belongs to the Section Water-Energy Nexus)
Innovative Approaches to Mine Water Management: Monitoring, Remediation, and Prevention
edited by and Baogang Zhang
submission deadline 30 Jun 2026 | Viewed by 218 | Submission Open
Keywords: mine water; water treatment; environment monitoring; soil remediation; health risk assessment; envirommental fuctional materials
(This special issue belongs to the Section Water Quality and Contamination)
Earth Observation for Sustainable Agricultural Water Management submission deadline 30 Jun 2026 | Viewed by 215 | Submission Open
Keywords: earth observation; water demand; precision agriculture; remote sensing; machine learning; sustainable water management; soil-plant-atmosphere interactions
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Hydroclimatic Changes in the Cold Regions
edited by Alexander Shiklomanov, Vladimir Alexeev and Hotaek Park
submission deadline 1 Jul 2026 | 3 articles | Viewed by 2160 | Submission Open
Keywords: Arctic climate change; permafrost changes and feedback; snow and permafrost hydrology; ecohydrology of cold regions; hydrological processes in cold regions; river biogeochemistry in cold regions; Arctic water cycle; hydroclimatology of cold regions; hydrological modelling
(This special issue belongs to the Section Water and Climate Change)
Optimal Design of Water Distribution Systems submission deadline 10 Jul 2026 | 3 articles | Viewed by 2263 | Submission Open
Keywords: water distribution systems; optimization; optimal network design; hydraulic modelling; resilience; energy efficiency; cost-efficiency
(This special issue belongs to the Section Urban Water Management)
The Soil–Water–Microbiome Nexus: Integrating Microbial Functions for Agricultural Sustainability
edited by Arnab Majumdar, and Tarit Roychowdhury
submission deadline 10 Jul 2026 | 1 articles | Viewed by 2134 | Submission Open
Keywords: soil microbiome; water management; agroecosystem sustainability; microbial inoculants; nutrient cycling; climate resilience
(This special issue belongs to the Section Soil and Water)
Climate, Water, and Soil, 2nd Edition submission deadline 10 Jul 2026 | 1 articles | Viewed by 1846 | Submission Open
Keywords: climate change; climate variability; hydrological cycle; carbon and nitrogen cycles; GHG emissions; climate water and soil interactions; climate vs. ecosystem functioning and services; irrigation water quality; crop water requirements
(This special issue belongs to the Section Water and Climate Change)
Advances in Plateau Lake Water Quality and Eutrophication
edited by Zhenghui Fu and
submission deadline 10 Jul 2026 | 1 articles | Viewed by 1756 | Submission Open
Keywords: simulation of watershed water environmental processes; environmental planning and management; eutrophication risk assessment and management; algal bloom warning and emergency response; multi-scale environmental risk zoning
(This special issue belongs to the Section Water Quality and Contamination)
Pathways to Carbon Neutrality in Water Systems: The Role of LCA, Ecological Engineering, and Pollution Control
edited by and
submission deadline 10 Jul 2026 | 2 articles | Viewed by 1453 | Submission Open
Keywords: carbon footprint; ecological engineering; carbon neutrality; low-carbon fishery; photovoltaic fishery; water pollution control; life cycle assessment; low-carbon wastewater treatment facility; wetland ecosystem service; water– energy– carbon nexus
(This special issue belongs to the Section Water and Climate Change)
Advances of Multiphase Flow in Hydraulic and Marine Engineering
edited by Wei Liu, and
submission deadline 10 Jul 2026 | 1 articles | Viewed by 811 | Submission Open
Keywords: multiphase flow; CFD modeling; air– water flow; cavitation; sediment transport; wave– structure interaction; subsea oil– gas– water flow; hydraulic structures; marine engineering
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Governance of the Marine Ecological Environment and High-Quality Blue Development
edited by
submission deadline 10 Jul 2026 | Viewed by 338 | Submission Open
Keywords: marine ecological governance; high-quality blue development; sustainable blue economy; marine ecosystem restoration; marine pollution control; blue carbon; marine policy and management; climate change and oceans; integrated coastal zone management; green maritime industries
(This special issue belongs to the Section Oceans and Coastal Zones)
Rainfall Variability, Drought, and Land Degradation submission deadline 15 Jul 2026 | 2 articles | Viewed by 3314 | Submission Open
Keywords: rainfall; soil; land degradation; variabiltity; drought; modeling
(This special issue belongs to the Section Soil and Water)
Optimisation of Water Distribution System Design and Operation Under Uncertainty submission deadline 15 Jul 2026 | 1 articles | Viewed by 1048 | Submission Open
Keywords: water distribution systems; uncertainty analysis; hydraulic and water quality modeling under uncertainty; optimization under uncertainty; stochastic and robust optimization; adaptive operational control; decision support systems under uncertainty
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
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