Plenty of water if we are smart about it

Saw this headline in the ST today. Roughly I guess it is about the use of water or getting more water for the needs of the people. Actually, there is no rocket science about plenty of water if we are smart about it. I did not go through the article but just want to borrow the headline for a simple discussion here.

Stretch this statement a bit further, there is plenty of food, energy, land and