We see torrential rains lashing the cities, at times breaking century’s old records creating havoc and almost paralysing civic life.Scenes of cities inundated, roads washed off, lives and livelihoods affected, bunds breached,and many rendered homeless and seeking shelter are common during such spells.This has been the scene of many cities as and when it rains cats and dogs.The most recent instance in the city of Hyderabad is an example when the city reported about 192 mm of rain fall in just 24 hours.The water so available is enough to serve the needs of population of the city for more than 90 days if we take the per capita recommended water need as 135 litres per day for all uses. All this is just with the rain fall in one day and one city.Then a logical extrapolation to the huge loss of one of the most precious natural resources ( water ) is simply mind boggling when we think of such a large country as ours and it is high time we take measures on a war footing to ...