Board Thread:Bug Reports/@comment-24108228-20140522204107/@comment-24108228-20140522205734

Sandstone wells are probably the most hard to make of all of them, requiring 15 separate crafting recipes. The stone well takes 6, and that's assuming your starting from small stones and not quarried boulders.

And the water source already there is plenty to feed an entire tribe, when it works. Sailing to a separate island for a drink shouldn't be necessary when you have a waterfall right next to you.