The East Kolkata Wetlands are an ecological marvel at the eastern edge of Kolkata that naturally purifies most of the city’s sewage. The wetlands utilize a system of ponds, sunlight, plants and microorganisms to clean up nutrients and provide a base for the fishing and agricultural industries.
How do those things function?
All wastewater comes to the fish ponds where natural processes take place to eliminate waste and restore nutrients. The East Kolkata wetlands are recognized as one of the Ramsar Convention sites of international importance.
What is the importance of wetlands?
Apart from treating wastewater, the wetlands provide jobs, diversify the ecosystem and grow food.
What are the threats to them?
Urban growth and contamination put pressure on the wetlands.
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