East Kolkata Wetlands: The world's largest organic sewage management system

Spread of the East Kolkata Wetlands site. World-renowned as a model of a multiple use wetland, the site’s resource recovery systems have been developed by local people through the ages. The wetland not only treats the city’s sewage but the treated water is utilised for pisciculture and agriculture, thus saving the city of Kolkata from the costs of constructing and maintaining waste water treatment plants.