Connecting water sector professionals in more than 140 countries to shape the future of water and sanitation. Building on 75 years of tradition, we are the global voice for the water sector.
Delivering lasting impact
IWA has members in more than 140 countries worldwide.
A worldwide network of water professionals working towards a water wise world.
IWA organises and supports conferences and events around the world each year.
What we do
From research and policy to technology and action, IWA brings the global water community together to explore solutions to the world’s most pressing water challenges. Discover what we do.
Engage with policymakers, researchers, and industry leaders at world-class events that shape the future of water governance and technology.
The Water and Development Congress & Exhibition 2025 will take place in Bangkok, Thailand from 8-12 December 2025. It builds on the resounding success of the 2023 edition in Kigali, Rwanda, which was a landmark event for water, sanitation, and climate resilience in low- and middle-income countries.
Stay ahead in the ever-evolving water sector with expert-led courses and webinars, training, and networking—designed for every stage of your career.
Access IWA’s comprehensive digital knowledge hub, featuring thousands of high-quality research papers, presentations, articles, and videos curated from global events, expert publications, and leading voices in the water sector.
IWA’s portfolio of strategic programmes and initiatives drives change agendas on key themes essential for a water-wise world, fostering innovation, collaboration, and impact.
IWA empowers cities to manage water sustainably, fostering resilience, innovation, and liveability through the Principles for Water-Wise Cities framework.
Take action
Explore three tailored membership options—Individual, Corporate, and University—designed to connect you with world-class expertise, networks, and opportunities.
As an individual member, learn global and local world-class best practices, develop your skills, network, and be recognised as a leading water professional. You can choose to participate in specialist groups and be in the forefront of leading-edge developments.
Enable your university or professional institution to share, benchmark and raise awareness of the research of your academics, engineers and scientists with leading water organisations, governments and businesses.
Corporate membership helps enable your organisation to deliver world class water solutions, by enhancing your staff’s water expertise, facilitating professional development, and offering opportunities to develop your brand in the industry.
Reflecting on our 14th IWA International Conference on Water Reclamation and Reuse this last March, it is clear the need for international opportunities to collaborate and share information on critical research, policy and implementation strategies is vast.
IWA has been a cornerstone of my professional development, offering invaluable platforms for leadership, advocacy, and technical engagement in the global water sector. The Association has provided unique opportunities to influence global discourse on youth participation, innovation, and sustainabili...
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