I lived in the Fla. keys, and all the 'City' water there has to be piped in from the mainland... It's EXPENSIVE!
SO,
Most of us had rain water catchment systems...
Lots of smooth tile, slate or metal roofs, and lots of storage 'Cisterns' like the older homes before the days of 'City Water' had...
It's basically a 'Tank Well',
Large storage tank underground or set on the ground designed to catch all the CLEAN rain water it can.
That is used as is for household water, washing dishes or cloths
(hence my habit of sloshing some bleach in the dishwater that I do to this day)
And running it through a commercial filter before drinking or using it for ice...
Most 'Drinking Water' is 'City Water', most 'Utility' water is from the cistern.
-------------------------
Boiling water and condensing the steam (water vapor) is called 'Distilling' and it's wildly ineffective way to either remove parasites or salts from drinking water, but it's still done to this day...
Instead of boiling water to distill it, try a 'Solar Still'...
Works the same way, little different arrangment, and takes NO fuel except the sun to work.