Pilot at Sitio Burle Marx, Rio de Janeiro, Brazil  ©OozeArchitects

Pilot at Sitio Burle Marx, Rio de Janeiro, Brazil



A constructed wetland is essentially, a shallow basin filled with a substrate, usually sand and gravel, and planted with vegetation tolerant of saturated conditions. Constructed wetlands are efficient sanitation technologies and act as bio-filters that remove a range of pollutants from wastewater. They also increase the biodiversity in urban areas and present exciting opportunities for decentralised wastewater treatment in the city.

Primary Function

  • Treats sewage, recycles water for non-potable use

  • Reduces load on existing sewage network

Added Benefits

  • Increased biodiversity

  • Absorbs peak rains

  • Prevents erosion

  • Reduces overheating (in comparison to paved areas)

  • Carbon sequestration

  • Improved urban quality

  • Communicates urban water dynamics