I work hard to keep my snakes well taken care of and happy. One of my biggest worries is that they have enough fresh water and room to stretch out. Stretching out is important so they can relax.
I change their water every other day. As you can see, snakes drink water like any other animal.
Above you can see Sirrius all stretched out, with his long skinny tail reaching back his habitat and the things he likes to climb on. If your snake habitat is too small they can become stressed and be more apted to bite and stretch out like they should to relax. Keep that in mind as you try to decide about your snakes living quarters.