If possible please add a few more small lakes or ponds on the east side of the map where the big open areas are or anything else where sodas can spawn (for example some picnic tables).
Players easily get lost, go in circles (which drains quite a lot of hydration after a while) or don't come across any animals. Not even many players cross certain areas so the chance of getting water from a dead player isn't very high either.

There is a mod that would let players collect rain water with the cooking pot when it's raining a lot but I'm not sure if that would be possible or worth thinking about.