India, Jan. 15 -- Delhi exemplifies the complex challenge of water being "too much, too little, and too polluted." The city's daily demand of about 1,290 million gallons far surpasses the formal supply of approximately 1,000 million gallons, driving unsustainable groundwater withdrawal and aquifer depletion. The Yamuna, Delhi's primary water source, faces increasing pollution, while waste and drainage systems often get disrupted during heavy rains.

This is not just Delhi's story but rather reflects the stark reality of many Indian cities today. Despite housing nearly 18 per cent of the world's population, India has access to only 4 per cent of global freshwater resources. Erratic monsoons and rampant groundwater extraction have exacerbat...