Where Does Drinking Water Come From?

Take a large body of water

Use solar power to desalinate and purify it.

Transport it using wind energy

And deliver it weekly

This is the where most drinking water comes from. 

Question is: do you want the last miles to be this:

to where it's treated, 

and then pumped through this

Or is it better to pick it up here

put it directly into here

and treat the water as it's used?