Waste to Aqua Industry - a Kolkata Model

What you see before you are the wetlands to the east of Kolkata- the shock absorbers of all life activities of the city.
A unique example of a man made and man managed wetland in which untreated sewage of the city is utilized extensively for fish culture. Treating the waste water from the city by these waste lands saves Kolkata from constructing and maintaining a wastewater treatment plant. The wetland is largely human made, comprising inter tidal marshes, with significant waste water treatment areas like sewage farms, settling ponds, oxidation basins. Successfully managed by the local fishers for the past 100 years, East Calcutta Wetlands has been designated as a Ramsar Site in November 2002.