1. Afvalzorg, Assendelft, The Netherlands
2. Eco-Ideal, Kuala Lumpur, Malaysia
3. Uganda Waste Management and Administration Confederation, Kampala, Uganda
4. Tritech Natural, Velddriel, The Netherlands
5. SCS Engineers, Long Beach, CA, USA
6. Solvi, Sao Paulo, Brazil
7. Tonkin + Taylor, Auckland, New Zealand