13th Urban Drainage Modelling Conference
2025-09-15 - 2025-09-19 | Innsbruck, Austria
The UDM Conference seeks to create a forum for deep discussion and exchange of ideas amongst technical experts including engineers, scientists, professionals and academics. The UDM Conference brings focus to the data and models needed to develop better understanding and advance the management of the urban drainage system (e.g., water quality and quantity, urban flooding and modelling, urban flood forecasting and risk analysis, modelling tools, data etc.).

WEFTEC 2025
2025-09-27 - 2025-10-01 | McCormick, Chicago, Illinois
Join a community of innovators, experts, and leaders at WEFTEC!
WEFTEC, the Water Environment Federation’s Technical Exhibition and Conference, is the largest annual water quality exhibition in North America and offers water quality professionals the best water quality education and training available.

Open Living Lab Days 2025
2025-09-30 - 2025-10-03 | Andorra La Vella, Andorra
OpenLivingLab Days is the flagship annual event organized by the European Network of Living Labs (ENoLL). It is the global gathering of international Living Labs that brings together living labbers, public officials, corporate leaders, entrepreneurs, academics, and innovators from around the world. The event offers a unique platform for networking, exchanging best practices, and collaborating on cutting-edge projects and for reflecting on the latest trends and how to shape the regenerative future.
The 2025 edition of the OpenLivingLab Days will take place in Andorra la Vella, Andorra, from 30 September – 3 October 2025. This year, we are embracing a truly unique setting—an entire country as a Living Lab! Andorra itself will serve as a dynamic testing ground for innovation, making this edition unlike any before. We are happy to co-organize this event with the Andorra Research and Innovation Foundation, the host of Andorra Living Lab.

10th IWA-ASPIRE Conference and Water New Zealand Conference & Exhibition
2025-10-20 - 2025-10-24 | Auckland, New Zealand
In an innovative departure from business as usual, the International Water Association (IWA) is joining forces with Water New Zealand to create an event that combines IWA-ASPIRE 2025 with the annual Water New Zealand Conference and Expo. It will provide a meeting platform for international water and sanitation professionals and practitioners and New Zealand WASH professionals, scientists and experts around common themes.
Theme: Empowering Tomorrow – Smart Water Solutions for Resilient Communities

The 19th IWA Conference on Sludge Management -Toward material cycle and low carbon society
2025-10-21 - 2025-10-24 | Kyoto, Japan
The IWA Conference on Sludge Management is an international conference organized by the Sludge Management Specialist Group (SMSG), one of the specialist groups of the International Water Association (IWA), with support from IWA Headquarters and other partners.
The main objective of the conference is to share the research results and experiences of researchers and engineers in this field from around the world and to create a platform for technological innovation.

Desalination Technology Expo 2025
2025-11-04 - 2025-11-06 | Valencia, Spain
Desalination Technology Expo is the world’s first 100% dedicated global exhibition and conference for the design, specification and operation of next-generation Desalination Projects and for upgrading and retrofitting existing desalination plants and facilities.
This is the must attend event for everybody engaged in Design, Development and Operation, Upgrading and Futureproofing. It is the place where current and next generation technologies will be discussed and presented, debated and on show in a world class exhibition.

Salon des Maires
2025-11-18 - 2025-11-20 | Paris, France
The Salon des Maires et des Collectivités is a place for collective construction, where players from the public and private sectors and associations can collaborate, exchange ideas and experiences and work together to meet the urgent challenges facing local authorities.

Water Project Europe – From Alternative Water to Circular Solutions
2025-12-02 - 2025-12-04 | Brussels, Belgium
Water Knowledge Europe – Winter Edition 2025, taking place from 2 to 4 December 2025 in Brussels, is the flagship brokerage and networking event of Water Europe for R&I. It brings together researchers, innovators, industries, utilities, policymakers, investors, and stakeholders from across Europe and beyond, all united by the shared goal of advancing a Water-Smart Society and Economy.

Water Projects Europe – Circularity in Industrial Water
2025-12-03 09:00 - 13:00 UTC | Brussels, Belgium
Anchored in the Zero Pollution Action Plan, and the newly launched Water Resilience Strategy, circular industrial water use has become a policy and societal priority. It is not only about technological innovation but also about systemic transformation across value chains.
This is the rationale behind Water Projects Europe 2025 – Circularity in Industrial Water, taking place at the Winter Edition of Water Knowledge Europe. The event will bring together three flagship Horizon Europe funded projects, RESURGENCE, CORNERSTONE, and R3VOLUTION, all developed under the Processes4Planet partnership (A.SPIRE). Each of them is testing and demonstrating advanced solutions for industrial water reuse, energy and resource recovery, and pollution reduction, showcasing pilots across Europe’s strategic sectors.

Water Project Europe – From Alternative Water to Circular Solutions
2025-12-03 09:00 - 13:00 | Brussels, Belgium
We bring these five projects together under the Water Projects Europe event to tell a single story: how pioneering demonstrations and systemic strategies can converge to accelerate the transition towards a Water-Smart Society and Economy and align to the goals of the EU Water . This is not only about technologies and pilots but about weaving them into the bigger picture, linking climate adaptation with circularity, innovation with governance, and projects with policies that will define Europe’s water future.

IWA Water and Development Congress & Exhibition 2025
2025-12-08 - 2025-12-12 | Bangkok, Thailand
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. Attracting nearly 2,700 participants from 85 countries, the 2023 Congress featured an engaging programme of 39 technical sessions, 40 workshops, and 5 forums, including the High-Level Summit on Sanitation and the Climate Smart Utilities recognition programme.

IWA Biofilms Reactors Conference
2026-03-16 - 2026-03-19 | Orange Beach, Alabama (USA)
The International Water Association (IWA) has hosted 25 specialty conferences pertaining to biofilms since 1989; 11 of them were focused on biofilm reactors. Biofilm Reactor Technology and Design 2010, which was co-organized by IWA and the Water Environment Federation, was the most recent of these conferences to take place in the U.S.A. After 16 years, the 26th specialty conference in this series – IWA Biofilm Reactors 2026 –will return to the U.S.A. in Orange Beach, Alabama.

IWA Water Loss 2026
2026-04-26 - 2026-04-29 | Rio de Janeiro, Brasil
Waterloss 2026 will provide an unparalleled platform for sharing knowledge, fostering collaboration, and driving forward the global agenda for sustainable water management. With the increasing challenges posed by climate change, population growth, and aging infrastructure, the need for effective water loss reduction strategies has never been more critical. This conference will feature a range of workshops, panel discussions, and technical sessions designed to address both the technical and policy aspects of water loss.

IFAT Munich 2026
2026-05-04 - 2026-05-06 | Munich, Germany
The world’s leading trade fair for environmental technologies is the most important meeting place for the industry. Here you can successfully present your strategies and new solutions from the fields of water, wastewater, waste and raw materials management. So that in future even more resources can be preserved in intelligent cycles in the long term and with the greatest possible efficiency.

Nutrient Removal and Recovery 2026
2026-05-17 08:00 - 2026-05-21 17:00 | Delft, The Netherlands
The city of Delft welcomes the 2026 Nutrient Removal and Recovery (NRR) Conference, a flagship event of the International Water Association (IWA).
Home to Antonie van Leeuwenhoek and the renowned Delft School of Microbiology, Delft has long been at the forefront of bio-inspired innovations in the global water sector. Building on almost 40 years of NRR conferences, NRR2026 offers a premier venue to explore the latest biotechnological advancements in (waste)water management. Special emphasis will be placed on the role of curiosity-driven research as the foundation for groundbreaking technological solutions.
NRR2026 will bring together key stakeholders — from international academics to industry leaders, practitioners, and policymakers. With strong engagement from universities, research institutes, industry, and governmental agencies, NRR2026 will be a pivotal moment in accelerating the transition from research to real-world impact, providing a roadmap for resilient, sustainable, and climate-proof cities.

Global Water Summit 2026
2026-05-18 - 2026-05-20 | Madrid, Spain
The Global Water Summit is returning to Madrid for 2026, hosted at the Madrid Marriott Auditorium. With visits to local sites and a dinner at a nearby estate, we’re looking forward to exploring the heart of Spain. Register to join us at the water industry’s most anticipated event and explore this year’s stylish venue.

11th International Conference on Sewer Processes and Networks (SPN)
2026-05-20 - 2026-05-22 | Trondheim, Norway
The International Conference on Sewer Processes and Networks (SPN) is held every 3rd year by the Sewer Systems and Processes Working Group under the IWA specialist group on Urban Drainage (Joint IAHR/IWA). The last of these conferences, the SPN 8, SPN 9 and SPN 10, were held at TU Delft in Rotterdam, The Netherlands, at Aalborg University in Aalborg, Denmark, and at TU Graz in Austria. The next SPN will be held from 20th to 22nd of May 2025, and we are happy to host the 11th edition of the International Conference on Sewer Processes and Networks in Trondheim, Norway at the Norwegian University of Science and Technology (NTNU).

10th International Conference on Flood Management
2026-05-22 - 2026-05-26 | London, Ontario, Canada
On 22-26nd of May 2026 the 10th International Conference on Flood Management will take place in London, Ontario, Canada. The ICFM conferences are an international platform to present new developments and exchange knowledge about flood management. It takes place every 3 years and was held in the EU in 2000 (Kassel, Germany) and 2005 (Nijmegen, Netherlands). The conferences are well attended by experts from universities, governments, research institutes and corporations. The theme for this conference is ‘Adapting to Global Change: Innovative Approaches to Flood Management and resilience’.

20th IWA Leading Edge Conference
2026-06-01 - 2026-06-05 | Houston, Texas, USA
The IWA Leading Edge Conference on Water and Wastewater Technologies is designed to be the place for sharing the latest insights into how pioneering science, technological innovation and leading practices will shape the major transformation in water management that is underway.

19th IWA World Conference on Anaerobic Digestion: Fueling Sustainability
2026-06-09 - 2026-06-13 | Valencia, Spain
IWA AD19 aspires to bring together a diverse community of academics, scientists, engineers, researchers, practitioners, policymakers, and representatives from both the public and private sectors. This event offers a unique opportunity to exchange insights, share research, foster collaboration, and inspire new ideas. We hope that the conference will contribute meaningfully to shaping the future roadmap of anaerobic digestion.

Water in Industry 2026
2026-06-09 - 2026-06-13 | Delft, The Netherlands
WIN2026 The efficient management of industrial waters plays an essential role in the sustainable development of economics and the effective protection of natural environment, which is faced with the various technological challenges, such as the high levels of hazardous organics and salinity, the broad flux loading, the extensive inputs of energy and materials, etc.

IWA World Water Congress & Exhibition
2026-10-04 - 2026-10-08 | Glasgow, United Kingdom
The event features a comprehensive technical programme selected by a global expert committee, with presentations, workshops, and posters showcasing the latest knowledge and innovation. Surrounding this, a wider programme includes keynotes, panels, leadership forums, technology showcases, and an integrated trade exhibition, delivering strong impact and value.

2026 United Nations Water Conference
2026-12-02 - 2026-12-04 | United Arab Emirates
Achieving Sustainable Development Goal (SDG) 6 on Clean Water and Sanitation is an essential end in itself and is also critical to progress on the 2030 Agenda as a whole. As we enter the final 5 years of the 2030 Agenda and its SDGs, the world must surge investment, innovation, political will and a spirit of solidarity into SDG 6. The 2026 United Nations Water Conference, co-hosted by the United Arab Emirates and Senegal, and convened in UAE 2-4 December 2026, will bring this spirit of solidarity to life and help to build a water-secure future for all.
