wetsus congress 2021

During the Wetsus Congress on October 4 and 5, 2021, you can meet your network in person again!

After the announcement of the relaxation of the COVID regulations in The Netherlands, we can organize the Wetsus Congress 2021 as you know it from before: in person.

On October 4 and 5 you can finally meet your water technology network again, enjoy our program and visit the demonstration floor.

The Dutch government will lift the 1.5 meter rule from September 25.  From this date, the coronavirus entry pass system must be used at events. You can generate a coronavirus entry pass if you have been fully vaccinated, have valid proof of recovery from COVID or have a negative test result from a test taken less than 24 hours before entry. You need this, and a valid ID, to enter our venue, theatre De Harmonie. More info (in Dutch and in English)

We want to emphasize that in Theatre De Harmonie,  there is plenty of space to keep distance, should you feel more comfortable doing so. If you have any questions, please contact

Read more about our interesting program and registration!

Innovation for a fair and sustainable society is the theme of the Wetsus Congress 2021. The congress will be held in city theatre De Harmonie in Leeuwarden. On Monday October 4, the theme will be addressed by speakers with various backgrounds, business, science and governmental perspectives will be highlighted. Tuesday October 5 is all about science. The parallel sessions are based on Wetsus’ scientific program.

A demonstration and networking floor is also part of the congress. If you want to present your company, contact

Check out our interesting program below!

October 4

09.30 – 10.00 Welcome and registration
10.00 – 12.00 Plenary session

Innovation for a fair and sustainable society

  • Wetsus update, Cees Buisman, Executive Board Wetsus
  • A clean future for homecare, Peter ter Kulve, President Homecare Unilever
  • Sustainable technology: let’s step up our game, Ingrid Thijssen, Chair VNO-NCW  
  • Thecla Bodewes, Chair Topsector Water & Maritime
  • Jaap Slootmaker RO CISA, Director-General for Water and Soil Affairs, Ministry of Infrastructure and Water Management
  • prof.dr. Marcel Levi, Chairman NWO

Marcel Mulder Award Ceremony

  • Pitch, dr. Ettore Virga, winner of the 2020 Marcel Mulder Award
  • Award 2021, drs. Ed Nijpels, President Supervisory Board Wetsus

12.00 – 14.00 Lunch, visit poster presentations  
14.00 – 16.00 Plenary session

How can water innovation prevent that water will limit the EU economy?

  • dr. Thierry Damerval, president of the French National Research Agency, ANR
  • Minna Wilkki, Head of Unit European Missions & Partnerships Directorate-General for Research and Innovation, European Commission

Sustainability and competitiveness: six cases

1. Water for the hydrogen economy, Dirk van der Woerdt MSc, Strategic advisor Business development at WLN 

2. Drought resilience of soils, Eline Keuning MSc, consultant at Bioclear Earth

3. Artificial Intelligence for a healthy environment, Matthew Stephenson, Director Europe at HAL24K  

4. Polymer recovery from wastewater, dr. René Rozendal, Managing Director at Paques Biomaterials

5. NEW a new entrepreneurship program, Ronald Wielinga MSc, Manager Entrepreneurship at WaterCampus Leeuwarden, and Roel Meulepas, Director Europe, theme and patent coordinator at Wetsus

 6. From start up to Euronext listed company, Erik Roesink, CTO & Founder NX Filtration

16.00 Networking reception

October 5

09.30 – 10.00 Welcome and registration
10.00 – 11.00 Plenary session

11.00 – 12.30 Parallel sessions

12.30 – 14.00 Lunch 
14.00 – 15.00 Plenary session

Keynote: Impacts of climate change on the Wadden Sea, Katja Philippart, Director Wadden Academy

15.00 – 15.30 break
15.30 – 17.00 Parallel sessions

2.1 Biological sulfide oxidation to sulfur                                                              
2.2 Water in Food Physics & Food Technology                                           
2.3 Waste water composition as predictive tool 
2.4 Optimizing Irrigation Water Quality                                                  
2.5 Applied Science: Circular agriculture – how about water?

17.00 Networking reception