Water is the most essential preparedness item. You can only survive a couple days without it. However, as essential as it is, in our society we can sometimes overlook it in our planning. As a bare minimum, you need to have at least 1 gallon of water per day per person. This amount is drinking/cooking only, it is not enough for personal hygiene or comfort. But even this small amount rapidly becomes a logistical nightmare if you attempt to store enough water for a long period of time. While you should store at least a 72 hour supply (or more), you also need some method of water purification. I chose to showcase this one method as it is cost effective, easy to create, and cost effective. I ordered this ceramic filter from a company called monolithic for under $30.00, installed it in in under 30 minutes, and now have filtered water for about 6 months.