These days you should make sure that water management is on the top of your list. This is important because it is going to become more and more scare as time goes on, especially in those areas where it is very dry. You can reuse the liquid to drink as well as to cook and clean.
Making sure that water management is implemented is important, especially since there will be ashortage at some point. You need to make sure that it is being used properly and that if it can be reused in any manner for the best way to manage water.