The 18th International Conference on Wetland System for Water Pollution Control (ICWS2024) will take place in Fort-de-France, Martinique. It will create a framework for treatment wetland scientists and practitioners to exchange knowledge and advance the overall understanding of those treatment systems. The goal is as well to improve collaboration and experience sharing with the Caribbean region, and Latin America more globally, where interest and research are growing more and more. Tropical climate, in a global change context, requires many adaptations compared to standard design rules.