The International Solid Waste Association (ISWA) World Congress is the foremost event in the field of solid waste management. Since its beginning in 1972, it takes place in a different location each year, this time in London. It serves as a global assembly, featuring elevated plenary sessions, technical site visits, and a rich cultural and social itinerary. Here, waste management professionals, government officials, industry leaders, policymakers, scientists, and emerging professionals convene, engaging in constructive dialogues to encourage scientific and technical advancements in sustainable solid waste management.

The Congress is always preceded by the ISWA General Assembly, next to the ISWA Board and Scientific and Technical Committee meetings.