India, May 22 -- Every year, Delhi faces the same issues in summer -- rising temperatures, increasing demand for water, and stress on the water resources of the city. What is new about the issue today is the seriousness of the efforts to solve the problems effectively.

To understand the challenge better, it is essential to focus on the basic problem that Delhi faces every year in relation to water. While the demand increases in summer, the water supply in the city remains the same. This makes it important to look at ways to better manage the city's supply requirements.

A considerable amount of the city's water requirement is fulfilled by north Indian rivers. Over the years, these rivers have come under increasing strain. Pollution, untr...