Natural wetland filters 198 million gallons of waste every day
In the East Kolkata Wetlands (EKW), in India, 750 million liters of human waste is treated every day through a process called bioremediation. Wastes are treated daily without using any chemicals, they support a fertile aquatic garden and protect the low-lying city from flooding. The “kidneys of Kolkata” are maintained by farmers and fisherman. Each…