There are a variety of challenges in water and wastewater management. One of the major issues is that of the widening demand-supply gap in the water sector as well as treatment of wastewater.
India is urbanising at, what a Union Minister has termed, a very 'dramatic' clip. It today has 50 cities with a population of over one million. As per the 2011 Census, the total number of cities and towns in the country had increased to 7,936 from 5,161 in 2001.