Seems that two of the most important and lucrative industries over the next couple of decades will be in the creation and distribution of clean food/water and power.

The big challenge with water will be finding a way to distribute it, if plastic is not to be used.
Mad Max series.
It isn't the future we are talking about. Check out the long term effect of the Himalayas thawing. Millions without water. And the Indians have used most of their subterranean water and are now facing drought.