Water and Wastewater Visioning for Dense Unplanned Urban Settlements: A Case of Sangam Vihar, Delhi

February 24, 2025

Cities, especially, large metro cities, are at increasing climate risk-induced water stress and flooding. Large, dense, unplanned urban settlements, already facing a crisis of water supply, wastewater, and storm-water management, will bear the brunt of climate change impact.

Sangam Vihar, Delhi, is a representative of such large, dense, unplanned urban settlement. Spanning 5 square kilometers and home to over a million people, it stands as the largest unauthorized colony in Asia.

This factsheet provides insights into the water, wastewater, and stormwater challenges faced by Sangam Vihar, along with CSE's recommendations for addressing these critical issues.