InterAqua 2026 is a Japanese trade exhibition focused on water treatment and water-environment business. It is a platform for water business that supports sustainable corporate activities.

The show covers membranes, ion-exchange materials, filter media, treatment chemicals, sensors, wastewater and sludge treatment equipment, desalination systems, ultrapure water equipment, UV sterilisation, ultrafine bubbles, pumps, blowers, remote monitoring, automatic control, and data analysis solutions. It also highlights special themes such as Industrial Water Treatment Solutions and PFAS countermeasure technologies.

Its target audience includes government agencies, utilities, water-treatment engineering companies, equipment manufacturers, factories and facilities, construction and consulting firms, IT vendors, research institutions, and overseas visitors. The current edition is planned to gather about 100 companies and organisations across 160 booths within a broader ecosystem of 13 concurrent exhibitions.