GWT Gold Sponsor @ Wetpol2023



Wetpol Sponsors



Don’t miss GWT presentations at this year’s conference:

10th International Symposium

On Wetland Pollutant Dynamics and Control

10 – 14 September 2023 | Bruges, Belgium


Chiara Sarti, Anacleto Rizzo, Riccardo Bresciani, Fabio Masi, Alain Petitjean, Ania Morvannou, Jan Schuetz, Flor Louage, Vaidotas Kisielius and Dr. Jaime Nivala (keynote) will present work which has been authored or co-authored by GWT members.






Rietland logo

 Rietland bvba has been a leader in the design and construction of natural treatment systems with plants since 1994. Working with partners all over the world, they have now built hundreds of constructed wetlands for the treatment of wastewater in the domestic, commercial and agricultural sectors. Holding the Belgian BENOR certificate, they are the only European company with the CE label for constructed wetlands.

Rietland offers the patented Forced Bed Aeration® technology in the Benelux countries and has developed the Phyto series of low-energy modular wetland solutions for treating wastewater in urban environments, small spaces and isolated areas.

Areas of specific expertise:

  • Advanced aerated wetlands
  • Agricultural and urban wastewater treatment

Rietland 2020

GWT’s contact at Rietland is its Director, Dion van Oirschot. Dion began his career at De Twaalf Ambachten, a centre for alternative technology in the Netherlands. He wrote several self-build guides before setting up a consultancy specialising in ecological solutions for wastewater and gaining the first award for the European Norm EN 12566/3 for wastewater treatment systems up to 50PE. He founded Rietland over 25 years ago and has been part of Rietland Agro, which focusses on wastewater treatment systems in the agricultural sector, since 2003.

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Rietland BVBA

Van Aertselaerstraat, 70



+32 3 294 02 65




The IWA Specialist Group on Wetland Systems for Water Pollution Control is organizing two new online events of YWP career pathways series where established professionals of the field will share their experiences and views on career opportunities in the wetland world.

21st of September at 2:00 pm (CEST), Gabriela Dotro (Senior Researcher at Cranfield University), Link

15th November at 1:30 pm (CET), Scott Wallace (CEO Naturally Wallace - GWT founding member), Link