https://www.wikihow.com/Make-Distilled-Water

The first two setups are great if you have a stove or fire. Ice is not necessary, but will speed it up.

Personally, I would run rain-water through one of the first two setups, but it should be drinkable as is.

https://www.distilledwaterassociation.org/2018/08/08/how-to-make-distilled-water-easy-with-the-power-of-the-sun/

This can work too if you have no heat source, but will be much slower. It is essentially the 1st setup from WikiHow, but with tarps and the sun.

To add to this, lookup "earthships". There is a ton of valuable energy in human waste, in both the form of fuel and fertilizer. There are plenty of ways to recycle water while preserving the valuable parts (and not dying of dysentery).