So I was dying of dehydration while it rained, and it suddenly donned on me. Why isn't there an option of collecting water when it rains? You can use plastic bags to collect the wonderful H2O that drops on the ground and put it into water bottles. Of course, to offset the positive, let there be a small chance of parasites or viruses in the rain (considering it's an apocalyptic world).
Of course, if there is an option to do that, just ignore me. I just haven't found it yet!