On behalf of the Organizing Committee, it is my great pleasure to warmly welcome all participants to the International Conference on Coastal and Tropical Water Sustainability. This conference is being conducted entirely on a digital platform and is jointly organized by the Society of Tropical Science and Technology and Tecno Scientifica.

We greatly acknowledge our publishing partners, Environmental Quality and Management, and Bio-Interface Research in Applied Chemistry that indexed in  ECSI Web of Science, Scopus, Chemical Abstract (ACS), and other emerging publication such as Tropical Aquatic and Soil Pollution (SINTA 3), Industrial and Domestic Waste Management (SINTA 2), Tropical Environment, Biology, and Technology (Mycite), and Sustainable Environmental Insight (Mycite)  for their collaborative support in publishing the articles.

I would like to extend my deepest gratitude to the technical and organizing committees whose dedication and efforts have been instrumental in the success of this conference.

I wish all participants a productive, engaging, and enriching conference experience. Once again, I warmly welcome you to ICOTWAS 2025.

Dr. Paran Gani
Chair of ICOTWAS 2026

All papers will be peer reviewed prior to acceptance. The accepted paper will be considered for publication in:
1. Environmental Quality and Management Special Issue "Emerging Trends in Monitoring and Management of Water Environments in Tropical Region" (ESCI Q4 Impact Factor 1.3; Scimago Q3 SJR 0.381),
2. Environmental Quality and Management Special Issue "Resilient Coasts and Oceans: Integrating Physical, Chemical, and Biological Dimensions for Sustainability" (ESCI Q4 Impact Factor 1.3; Scimago Q3 SJR 0.381), 
3. Bio-Interface Research in Applied Chemistry and  that indexed in Scopus, ESCI, Chemical Abstract (ACS), and Scilit (MDPI),  
4. Industrial and Domestic Waste Management (Sinta 2),
5. Tropical Aquatic and Soil Pollution (Sinta 3), 
6. Civil and Sustainable Urban Engineering (Sinta 4), 
7. Tropical Environment, Biology, and Technology (MyCite).
8. Sustainable Environmental Insight (MyCite)

• Coastal and Marine Ecosystem Sustainability: Coastal ecosystem management and conservation; Coral reef and mangrove restoration; Coastal biodiversity and habitat protection; Marine pollution monitoring and mitigation; Coastal erosion and sediment management
• Tropical Water Resources and Management: Sustainable freshwater management in tropical regions; Groundwater and surface water interactions; Rainwater harvesting and water supply systems; Integrated watershed management; Water scarcity and adaptation strategies
• Pollution and Waste Management: Industrial and domestic wastewater treatment; Microplastics and emerging contaminants; Nutrient loading and eutrophication; Solid waste management in coastal communities; Circular economy approaches for water sustainability
• Climate Change Impacts and Resilience: Sea level rise and coastal flooding; Climate change adaptation for tropical waters; Disaster risk management for coastal and island communities; Modeling climate impacts on water resources and ecosystems; Policy and governance for climate resilience
• Aquatic Biodiversity and Conservation: Fishery management and sustainable aquaculture; Conservation of endangered aquatic species; Ecological monitoring and biodiversity assessment; Invasive species management; Restoration of aquatic habitats
• Water Quality and Environmental Monitoring: Monitoring of physical, chemical, and biological water parameters; Remote sensing and GIS applications for coastal and tropical waters; Early warning systems for water pollution and contamination; Environmental risk assessment and mitigation; Citizen science and community-based monitoring
• Technological Innovations for Water Sustainability: Smart water management and IoT applications; Wastewater reuse and resource recovery technologies; Eco-friendly infrastructure for water treatment; Renewable energy integration in water systems; Innovative modeling and simulation tools
• Policy, Governance, and Community Engagement: Integrated coastal zone management (ICZM); Public awareness and community participation in water sustainability; Policy frameworks and regulatory compliance; Transboundary water management and cooperation; Education and capacity-building for sustainable water management