We allow third parties to collect information which we use for business purposes, for more info read CCPA section in the privacy policy page.
Browsers may block some cookies by default. Click accept to allow advertising partners to use cookies and serve more relevant ads. Visit our privacy policy page for more information.
Source: Pexels

This City Processes All Of Its Sewage Through Its Unique Wetlands


Kolkata is a bustling city in the West Bengal State in India, and is home to around five million people. Though it's definitely a metropolis, there is not a single sewage-treatment plant. The India Better reports that the city produces 2 million gallons of wastewater and sewage every single day, but the city hasn't been flooded with waste. That is because they use the natural filter of their local wetlands to filter and clean the water.

The East Kolkata Wetlands were original salt marshes and other low-lying lands that would naturally flood during the rainy season. They have been built up into a man-made network that processes waste through the ecological structure of the marsh itself. A local corporation routs the waste water through small inlets, which are each managed by a different fishery cooperative. The cooperative manages the water's flow, which allows the waste to settled to the bottom, and the clear water to flow out into the wetland.