I did not save that specific world. You can try it yourself with any world, just set the water to big and try to find some outside of spawn. I haven't been able to.

EDIT: The problem seems to be with the "Terrain Segmentation" option. With it set to lower settings, I don't know if this was intended ...

Water does not seem to spawn (or spawn enough) after the starting zone. I made a world with water settings set to "big" and I cannot find water outside of the starting zone in every world I tried. This is true for every water setting "Big" and below. In "Very Big" the water seems to be consistent ...