There could be beautiful unique nature sights like:
-ponts with brown/greenish water, water lilies, reed at the shore and frogs&dragonflies. (dont drink it before boiling)
in every biom should be water sources with its own unique characteristicas:
in the savana brown water holes, (if you drink it, it makes you sick.)
In the desert oases with palm trees and bushes
In the tundra and other snowy areas frozen lakes
So these water sources are there to drink from it directly or after boiling it on fire to make it consumable.
Water from he ocean is salty and even increases the thirst.
Beside these water ponts&lakes with reed should be also rivers, which start at a spring and flows into the ocean. Inside the rivers are round stones different sizes called riverbed. You can also drink from rivers.