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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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Advances in the Treatment of Refractory Organic Wastewater
edited by and
submission deadline 31 Jan 2026 | Viewed by 210 | Submission Open
Keywords: adsorption; Fenton-like catalyst; physical fields enhancement; electro-assissted treatment; nutrients; microplastic
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Advances in Micropollutants (MPs) Treatment in Source Waters
edited by Mingizem Gashaw Seid
submission deadline 31 Jan 2026 | Viewed by 184 | Submission Open
Keywords: advanced oxydation processes; electrochemistry; environmental pollution; degradation mechanisms; persistent micropollutants; perfluorooctanoic acid (PFOA); pharmaceuticals; photocatalysis; peroxide chemistry; sustainable biochar; UV-based degradation; wastewater
(This special issue belongs to the Section Water Quality and Contamination)
Climate and Water: Impacts of Climate Change on Hydrological Processes and Water Resources, 2nd Edition
edited by and
submission deadline 31 Jan 2026 | Viewed by 10 | Submission Open
Keywords: climate change; hydrological cycle; climate-related hydrological processes; distributed model; statistical analysis; water resource and its utilization; future scenario simulation; remote sensing application; GIS application
(This special issue belongs to the Section Water and Climate Change)
Working Across Borders to Address Water Scarcity
edited by and Rosario Sanchez
submission deadline 31 Jan 2026 | Viewed by 8 | Submission Open
Keywords: transboundary water management; water scarcity; water sharing; water storage; policy and governance in water-scarce regions
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
Eco-Engineered Solutions for Industrial Wastewater
edited by
submission deadline 31 Jan 2026 | Viewed by 6 | Submission Open
Keywords: constructed wetlands; industrial wastewater; nature-based solutions; sustainable substrates; tidal flow systems; dye and surfactant removal; microbial ecology; eco-engineering; low-cost materials; circular economy
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Crop Evapotranspiration, Crop Irrigation and Water Savings submission deadline 10 Feb 2026 | 3 articles | Viewed by 3108 | Submission Open
Keywords: the use of FAO crop coefficients and transpiration coefficients; evapotranspiration; aerodynamic and bulk canopy resistance; evapotranspiration; irrigation scheduling and water saving; tree evapotranspiration; traditional and under-utilized vegetable crops; remote sensing and irrigation scheduling; crop management for controlling ET and yield; precision irrigation; irrigation scheduling using crop coefficients from fraction of ground cover and height; use of model tools
(This special issue belongs to the Section Water, Agriculture and Aquaculture)
Editorial Board Members’ Collection Series: Emerging Issues in Urban Wastewater Treatment Following EU’s Wastewater Treatment Directive Recast submission deadline 10 Feb 2026 | Viewed by 12 | Submission Open
Keywords: urban wastewater treatment; sanitation in small communities; nutrients and emerging pollutants treatment; water reuse and recycle; energy and resources recovery: energy neutrality and audits in WWTPs; sewage and effluents monitoring
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Water, Geohazards, and Artificial Intelligence, 2nd Edition
edited by
submission deadline 20 Feb 2026 | 5 articles | Viewed by 8825 | Submission Open
Keywords: landslides; slope stability; artificial intelligence; experiments and models; natural hazards; porous media; geotechnical hazards; geomorphology and climate change; remote sensing and GIS analysis; morphotectonics; water basins; watershed morphometric indices; debris flow; water table; groundwater seepage; failure mechanism; hydrogeology
(This special issue belongs to the Section Hydrology)
The Role of Vegetation in Freshwater Ecology submission deadline 20 Feb 2026 | 3 articles | Viewed by 4776 | Submission Open
Keywords: vegetation; freshwater; ecology; catchment; climate change
(This special issue belongs to the Section Water Quality and Contamination)
Electrochemical Technology for Wastewater Treatment: Challenges and Solutions
edited by
submission deadline 20 Feb 2026 | Viewed by 109 | Submission Open
Keywords: electrochemical advanced oxidation processes; electrode materials; wastewater treatment; sustainable solutions; water reuse; energy efficiency; process scale-up; reactor design; process modelling; systems integration
(This special issue belongs to the Section Wastewater Treatment and Reuse)
From Rainfall to Aquatic Ecosystems: Hydrological Processes and Environmental Effects
edited by and
submission deadline 20 Feb 2026 | Viewed by 22 | Submission Open
Keywords: rainwater; surface/ground water; rainfall processes; water pollution; materials cycle; source iden-tification; industrial discharge; atmosphere– hydrosphere interactions; environmental isotopes
(This special issue belongs to the Section Ecohydrology)
Research Progress of Groundwater Heat Pump Systems and Groundwater Resources Protection submission deadline 20 Feb 2026 | Viewed by 15 | Submission Open
Keywords: geothermal systems; geothermal exploration; groundwater heat pump systems; groundwater resources; aquifers
(This special issue belongs to the Section Hydrogeology)
Optimal Design of Water Distribution Systems submission deadline 20 Feb 2026 | Viewed by 10 | 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)
Applications of Machine Learning and Deep Learning in Coastal Process Modelling
edited by Pavitra Kumar
submission deadline 20 Feb 2026 | Viewed by 9 | Submission Open
Keywords: coastal dynamics; artificial intelligence; machine learning; coastal resilience; climate change
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Climate, Water, and Soil, 2nd Edition submission deadline 20 Feb 2026 | Viewed by 7 | 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 Anaerobic Digestion for Sewage Sludge Treatment
edited by and
submission deadline 20 Feb 2026 | Viewed by 4 | Submission Open
Keywords: anaerobic fermentation/digestion; sludge treatment; pre-treatment; biogas upgrading; digestate management; microbial community; energy and resource recovery; emerging contaminants
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Advances in Water and Stormwater Networks: Modelling and Pollutant Degradation, 2nd Edition
edited by , Yuqiong Gao and Yunshu Zhang
submission deadline 23 Feb 2026 | Viewed by 20 | Submission Open
Keywords: urban water contamination; disinfection byproducts; advanced oxidation; bioremediation; network leakage simulation; urban hydrology and modeling
(This special issue belongs to the Section Urban Water Management)
Ecohydrology in the Context of Climate Change: Strategies for Management, Monitoring, and Modeling submission deadline 25 Feb 2026 | 5 articles | Viewed by 4917 | Submission Open
Keywords: ecohydrology; hydrological cycle; ecosystems services; drought and floods; soil erosion
(This special issue belongs to the Section Ecohydrology)
Monitoring and Degradation of Drugs and Organic Pollutant in Wastewater submission deadline 25 Feb 2026 | Viewed by 233 | 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 Engineering Safety and Management, 2nd Edition
edited by Qiubing Ren, Shaowei Wang, Xudong Chen and
submission deadline 25 Feb 2026 | Viewed by 80 | Submission Open
Keywords: water engineering; safety management; optimization of design; intelligent construction; operation and maintenance; health diagnosis; risk assessment; numerical simulation; soft computing
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Emerging Contaminants in Natural and Engineered Water Environments: Environmental Behavior, Ecological Effects and Control Strategies, 2nd Edition
edited by , Xiaodong Li and
submission deadline 25 Feb 2026 | Viewed by 34 | Submission Open
Keywords: emerging contaminants; environmental behavior; ecotoxicology; ecological engineering; environmental remediation; treatment technologies; environmental microorganisms; natural processes; risk assessment
(This special issue belongs to the Section Water Quality and Contamination)
Effect of Biological Invasion on Aquatic Ecosystems
edited by Jay Stauffer
submission deadline 25 Feb 2026 | Viewed by 26 | Submission Open
Keywords: aquatic biodiversity; invasive species; biological invasions; ecosystem functioning; anthropogenic impacts; marine environment
(This special issue belongs to the Section Biodiversity and Functionality of Aquatic Ecosystems)
Water Safety, Ecological Risk and Public Health
edited by Qiuda Zheng and
submission deadline 28 Feb 2026 | 2 articles | Viewed by 1075 | Submission Open
Keywords: biomarkers of public health; waterborne pathogens; wastewater-base epidemiology; water safety; ecological risk assessment; emerging contaminants
(This special issue belongs to the Section Water and One Health)
Advancing Sustainable Hydrological Modelling and Smart Water Resource Management
edited by , Wenzhuo Wang and Jitao Zhang
submission deadline 28 Feb 2026 | 1 articles | Viewed by 147 | Submission Open
Keywords: climate change; sustainable hydrological modelling; smart water resource management; machine learning; model integration; real-time decision making; data-driven approaches; adaptive basin management
(This special issue belongs to the Section Hydrology)
Research on Adsorption Technologies in Water Treatment
edited by
submission deadline 28 Feb 2026 | Viewed by 46 | Submission Open
Keywords: novel adsorbent materials; adsorption mechanisms; kinetics; and isotherm modeling; adsorption of emergent contaminants; static and dynamic adsorption; selective adsorption for targeted pollutant removal; regeneration and reusability of adsorbents; integration with hybrid systems (e.g.; membrane filtration; catalysis); pilot-scale applications and real-world case studies
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Assessment and Management of Soil Salinity: Methods and Technologies submission deadline 10 Mar 2026 | Viewed by 33 | Submission Open
Keywords: salt accumulation and soil salinity assessment; methods of soil salinity determination; spatial and temporal distribution of salinity; irrigation with saline water; salinity control and salt leaching; drainage systems; effect of salts on hydraulic conductivity; mapping of soil salinity; remote sensing and soil salinity; geophysical instruments in soil salinity mapping; digital soil maps (DSMs) of ECe with machine learning (ML) technology; intelligent irrigation and leaching technology
(This special issue belongs to the Section Soil and Water)
Emerging Micropollutants in Water and Wastewater: Recent Tendencies, Treatment Options and Perspectives submission deadline 20 Mar 2026 | 3 articles | Viewed by 7040 | Submission Open
Keywords: emerging micropollutants (heavy metals; dyes; surfactants; pharmaceuticals; pesticides; hormones; organic compounds; detergents etc.); advanced water treatment; membrane processes; advanced oxidation processes; pollution control; wastewater treatment; removal strategies; adsorption; health risk
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Remote Sensing and GIS in Water Resource Management
edited by Xueying Li, and
submission deadline 20 Mar 2026 | Viewed by 37 | Submission Open
Keywords: remote sensing; geographic information systems; water resource management; hydrological monitoring and modeling; climate change adaptation; flood risk; drought assessment; machine learning; hybrid models; geospatial analytics
(This special issue belongs to the Section Water and Climate Change)
Marine Plastic Pollution: Recent Advances and Future Challenges submission deadline 20 Mar 2026 | Viewed by 35 | Submission Open
Keywords: marine litter; microplastics; macroplastics; plastic pollution; marine ecosystems; monitoring techniques; hydrodynamic models; environmental impact; socio-economic impact; remote sensing
(This special issue belongs to the Section Oceans and Coastal Zones)
Editorial Board Members’ Collection Series: “Managed Aquifer Recharge and Management” submission deadline 20 Mar 2026 | Viewed by 14 | Submission Open
Keywords: managed aquifer recharge; aquifer storage and recovery; artificial aquifer recharge; salinity barriers; water reuse
(This special issue belongs to the Section Hydrogeology)
The Occurrence, Fate and Removal of Emerging Contaminants in Wastewater, 2nd Edition
edited by Changqing Zhu and
submission deadline 30 Mar 2026 | Viewed by 4 | Submission Open
Keywords: emerging contaminants  ; wastewater  ; monitoring  ; management  ; treatment technology
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Sustainable Urban Water Management: The Role of Nature-Based Solutions submission deadline 31 Mar 2026 | 2 articles | Viewed by 1814 | Submission Open
Keywords: sustainable urban water management; nature-based solutions; floods and droughts; water quality improvement; climate resilience; green infrastructure; environmental sustainability; coastal management; liveable cities; sustainable development goals (SDGs)
(This special issue belongs to the Section Urban Water Management)
Transport and Removal of Emerging Contaminants in Water Environments
edited by , and Chunpeng Zhang
submission deadline 31 Mar 2026 | Viewed by 695 | Submission Open
Keywords: emerging contaminants; water pollution; advanced oxidation processes; membrane technologies; adsorption; environmental fate; ecotoxicology; microplastics; pharmaceuticals; pollutant removal technologies; water resource
(This special issue belongs to the Section Water Quality and Contamination)
NBS for Watershed Management: From Ecological Health Assessment to Ecosystem Restoration
edited by Yingying Huang, Chunhua Li and
submission deadline 31 Mar 2026 | Viewed by 103 | Submission Open
Keywords: watershed management; nature-based solutions; ecological health assessment; nonpoint source pollution control; ecosystem restoration
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
Advances in Plastic’s (Eco)Toxicity Research in the Aquatic and Terrestrial Environments
edited by
submission deadline 31 Mar 2026 | Viewed by 83 | Submission Open
Keywords: fresh water; marine water; plant; animal; plastic; distribution; intake; (eco)toxicity; ecotoxicogenomics
(This special issue belongs to the Section Water Quality and Contamination)
Advances in Crisis and Risk Management of Extreme Floods
edited by , Svenja Fischer, Kerstin Lesny and
submission deadline 25 Apr 2026 | 3 articles | Viewed by 5247 | Submission Open
Keywords: mitigation; preparedness; response; recovery management; resilience and risk; community resilienc; governance; forecasting; numerical simulation; induced landslides; critical infrastructure; nature based solutions
(This special issue belongs to the Section Hydrology)
Pollution Removal, Carbon Emission Reduction, and AI Empowerment in Wastewater Treatment
edited by , Xiao Ma and
submission deadline 25 Apr 2026 | Viewed by 41 | Submission Open
Keywords: wastewater treatment; pollution removal; carbon emission reduction; artificial intelligence (AI); integrated approaches
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Advances in Water Related Geotechnical Engineering
edited by
submission deadline 25 Apr 2026 | Viewed by 28 | Submission Open
Keywords: groundwater control; geotechnical engineering; dewatering; deep excavation; tunnelling; land subsidence; slope engineering; foundation engineering; pore water pressure; foundation pit leakage
(This special issue belongs to the Section Hydrogeology)
Physical–Chemical Wastewater Treatment Technologies, 2nd Edition
edited by María Dolores Saquete and
submission deadline 25 Apr 2026 | Viewed by 18 | Submission Open
Keywords: micropollutants; emerging pollutants; persistent organic pollutants; advanced wastewater technologies; sewage sludge pollution; physical– chemical treatments
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Water and Wastewater Management in the Context of Environmental Sustainability submission deadline 30 Apr 2026 | Viewed by 165 | Submission Open
Keywords: advanced wastewater treatment; water treatment; circular economy; innovative materials; innovative processes; urban water management; nutrient recovery; wastewater recycling and re-use; emerging pollutants
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Groundwater for Health and Well-Being submission deadline 10 May 2026 | 1 articles | Viewed by 560 | Submission Open
Keywords: mineral-medicinal waters; natural mineral waters; thermal waters; balneotherapy; water quality; contaminants; anthropic ecosystem; climate change; energy efficiency; artificial intelligence
(This special issue belongs to the Section Water and One Health)
Global Water Resources Management
edited by
submission deadline 20 May 2026 | 2 articles | Viewed by 902 | Submission Open
Keywords: sustainability; water resource engineering; agricultural water management; nature-based solution; wastewater treatment; integrated constructed wetland; storm water management; climate change adaptation; water conservation strategies; Internet of Things; sensors for water management
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
Advancing Knowledge of the Impacts of Contaminants in Aquatic Environments
edited by
submission deadline 31 May 2026 | Viewed by 35 | Submission Open
Keywords: benthic; water column; lentic; lotic; aquatic pollution; ecotoxicology; assay; test
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
Sustainable Water Resources Management in a Changing Environment
edited by , Emiliana Valentini and
submission deadline 30 Jun 2026 | Viewed by 533 | 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)
Sustainable Research on Water Quality Monitoring and Nutrient Pollution Control
edited by , Yi Hong and
submission deadline 30 Jun 2026 | Viewed by 112 | 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
Innovative Approaches in Hydrology Applied to the Study of River and Lakes Systems submission deadline 30 Jun 2026 | Viewed by 36 | 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)
Hydroclimatic Changes in the Cold Regions
edited by Alexander Shiklomanov, Vladimir Alexeev and Hotaek Park
submission deadline 1 Jul 2026 | Viewed by 44 | 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)
Aquaculture Tailwater Treatment: Theoretical Foundations and Applied Techniques
edited by
submission deadline 31 Aug 2026 | Viewed by 316 | Submission Open
Keywords: aquaculture effluent; tailwater treatment technology; aquatic environmental protection; nitrogen and phosphorus removal; waste resource utilization; environmental microbiology; intelligent equipment; sustainable aquaculture
(This special issue belongs to the Section Water, Agriculture and Aquaculture)
Water and Education: Teaching Sustainability, Managing Risks, and Shaping the Future submission deadline 25 Sep 2026 | Viewed by 9 | Submission Open
Keywords: sustainable development goals (SDGs); climate change and water; water resources and landscapes; end-purposes of water teaching; flood risk management; water conservation strategies; hydrological cycle education; community engagement in water sustainability; resilient water governance
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
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