The Wetsus Congress 2023, organised by Wetsus, will take place at the Harmonie in Leeuwarden on 9 and 10 October. Every year the Wetsus Congress brings together keynote speakers from government, industry, and science to share knowledge on the latest water technology. This year's theme is ‘Environmental Resilience to Novel Entities’. The plenary sessions on Monday 9 October will address the topic of Environmental Resilience to Novel Entities in an international context and from the perspective of sustainable innovation. Tuesday 10 October is dedicated to science and the 12 parallel sessions are based on Wetsus' scientific programme. In addition to the knowledge sessions, there will be an exhibition floor. The TKI Water Technology Programme will be present with a booth at the Congress.