I'm really late getting started, REALLY LATE, I know, but I'm an innovative thinker and a survivor in all aspects so I will do the best I can with what I have available and see what happens, that's all many of us can do. In my innovative mind, I have tried to envision The World of tomorrow and especially The United States of America and what it will be like not just tomorrow but next month and next year. I know it's late and that I'll never have enough time to be 100% or even half that towards being ready for whatever so as I go, I spend as much time as possible trying to over prepare in areas where I can in hopes that my over preparedness will gain me leverage in the market when it's time to barter or maybe to have something to bring to the table in a group situation. I understand that in an emergency situation, the grocery store shelves will be completely empty in three hours. EMPTY in three hours. I also understand that us humans can go as long as three weeks without food before we starve to death. It is also true that a human will only survive three days without water. It is said to take a gallon of water per day, per person to survive. Half for drinking and half for hygiene. I, as a late starter, intend to take advantage of the fact that I have an underground spring that puts out an unbelievable amount of water and when I say unbelievable amount, I mean this spring PUTS IT OUT. Not only have I made steps to preserve, secure and utilize the water from the spring but I've collected a large number of milk jugs and I'm planning to fill them and store them for my use and for use at the bargaining table. It only stands to reason that water will be a valuable commodity and I'm hoping to capitalize on my over abundance by over preparing and having plenty to spare. My question is..... What is the most effective and cheapest way to purify the water. The truth is, I've been drinking it straight out of the ground for all of my life but I don't expect I can put it in washed out milk jugs and not have problems without treatment of some kind. I heard that a drop of Clorox per gallon will do it but I want to know the whole truth before I make the wrong move. Any information will be greatly appreciated, help me now and remember that I've got water later.