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Natural wetlands are ecosystems that have developed over time, providing diverse habitats and naturally filtering water through complex biological and physical processes. Constructed wetlands, on the other hand, are designed and built to mimic these natural functions, targeting specific water quality goals and pollutant removal. They are a cost-effective and efficient method widely used in North America to treat various wastewaters—such as stormwater, sewage, and agricultural runoff. A facility is normally characterized as a wetland if shallow zones (<0.5 m deep) make up more than 70 % of its volume.
Natural wetlands are ecosystems that have developed over time, providing diverse habitats and naturally filtering water through complex biological and physical processes. Constructed wetlands, on the other hand, are designed and built to mimic these natural functions, targeting specific water quality goals and pollutant removal. They are a cost-effective and efficient method widely used in North America to treat various wastewaters, such as stormwater, sewage, and agricultural runoff. A facility is normally characterized as a wetland if shallow zones (<0.5 m deep) make up more than 70 % of its volume.
Wetlands can contribute to<ref>Toronto and Region Conservation Authority. 2025. Wetlands. https://trca.ca/conservation/restoration/wetlands/#:~:text=Increased%20biodiversity,as%20bird%20watching%20and%20fishing</ref><ref>Bendoricchio, G., L. Dal Cin, and J. Persson. 2000. Guidelines for free water surface wetland design. EcoSys Bd 8: 51–91. http://www.pixelrauschen.de/wet/design.pdf</ref>:
Wetlands can contribute to<ref>Toronto and Region Conservation Authority. 2025. Wetlands. https://trca.ca/conservation/restoration/wetlands/#:~:text=Increased%20biodiversity,as%20bird%20watching%20and%20fishing</ref><ref>Bendoricchio, G., L. Dal Cin, and J. Persson. 2000. Guidelines for free water surface wetland design. EcoSys Bd 8: 51–91. http://www.pixelrauschen.de/wet/design.pdf</ref>:
*Storing water and attenuating floods
*Storing water and attenuating floods
*Carbon sequestration<ref>Kennedy, G., and T. Mayer. 2002. Natural and Constructed Wetlands in Canada: An Overview. Water Qual. Res. J. Canada 37(2): 295–325. doi: 10.2166/wqrj.2002.020.</ref>
*Carbon sequestration<ref>Kennedy, G., and T. Mayer. 2002. Natural and Constructed Wetlands in Canada: An Overview. Water Qual. Res. J. Canada 37(2): 295–325. doi: 10.2166/wqrj.2002.020.</ref>
[[LID Case Studies#Wetlands|Case studies]] are available for wetlands used in LID systems.
[[LID Case Studies#Wetlands|Case studies]] are available for wetlands used in LID systems.