India, March 18 -- India is running out of water. Not in the distant future right now. Across cities, farms, and villages, the warning signs are everywhere. Borewells go deeper every passing year. Rivers grow thinner every summer. Reservoirs in cities like Bengaluru and Chennai regularly hit critically low levels. And a country that holds 18% of the world's population controls just 4% of its freshwater resources.

That gap is not closing. It is widening. India's water demand may exceed available supply by 2030. That is not a distant projection from some research report it is four years away. The government knows this. Scientists know this. And increasingly, financial markets are beginning to take notice.

However, the story does not end w...