In the previous decade, preparedness consultant, survival bookseller, and California-based author Don Stephens popularized the term retreater to describe those in the movement, referring to preparations to leave cities for remote havens or survival retreats should society break down. In 1976, before moving to the Inland Northwest, he and his wife authored and published The Survivor's Primer & Up-dated Retreater's Bibliography.
I can’t agree with your solution for water purification. If the argument is to “also” include scenarios where boiling isn’t practical, there are other options that fit the bill. For us, we’ve been using a Berkey filter system in our home instead of something that needs water pressure or power to serve in both bug out and Flint, MI like scenarios. We use it day to day today. Not cheap upfront but the cost per litre/gallon over time is a fraction of what you’ve proposed – with all due respect.
When speaking to preppers like Jennifer, Luther, and Nygaard, it can be hard to separate the more practical aspects of the lifestyle from the enjoyment that comes from doing things yourself instead of paying someone to do them. When I point out that running a small-scale farm and caring for two kids seems like an awful lot of work to do on top of a full-time job, Nygaard demures. “Yeah, it is. But I choose it. I choose to spend it like this because there are things that give me pleasure. I enjoy canning. I love seeing my work on the shelf. You grew that, and you canned it, and you get a source of pride from that.”
Our grandparents were the original preppers, really. They could make a chicken last for two weeks. When my wife and I are wandering around the supermarket, I’ll keep my eye out. I’m always looking at a product’s shelf life. I don’t want to buy food that has a shelf life of two weeks; I need five years plus. It’s an attitude, really, but it’s also a fascinating hobby. I’m constantly learning survival techniques: how to forage, hunt, trap, fish, purify water. And I’m informed on larger environmental and political issues by friends in the know. People think I’m a tin hat-wearing nutter, sitting here guarding 3,000 tins of beans, but it’s not all-consuming. It’s like having a spare tyre in your car, or some winter basics: a torch, some candles, a sleeping bag. You can leave it at that, you don’t have to go mad. That’s how I started – I just happened to carry on.
Much of what has been said I agree with. What I do take exception is that many think that an EMP Pulse at this point in time would be somehow less devastating then a nuclear attack. A Nuclear attack kills rapidly initially and then other problems would cause a die off. An EMP Blast would not kill masses but it would be equally devastating as all infrastructure fails and mass starvation, lack of resources would have the same effect. Read the Book 1 Second After and it illustrates how bad things could really be. I am not minimizing the devastation of a Nuclear Bomb. I am pointing out that the impact woult probably be close to the same.
I like to store honey and sugar not because these are great survival foods, but because they have so many other uses that most people are not aware of. These two items will store for many years and are bound to outlast you. Besides working as sweeteners for your food, they can also be used as an antiseptics or food preservatives. You can even preserve meat using honey and I recommend reading the following articles as it will teach you how you can benefit the most by stockpiling these foods:

Over the years we have had a number of weevil infestations in our pantry. I finally had the county entomologist share with me that they tend to be in most commercially packed grains and that all you can do is to go through what you buy fast enough to keep from having a full weevil life cycle get out and into your pantry. I have heard of your suggestion to freeze flower and have been told that this only delayed the start of the insect life cycle to when you took it out of the freezer. (The implication was that your freezer couldn’t get cold enough to kill them but only make they go dormant.) I am looking for information about generating CO2 to replace the air in your packing containers and this would either kill them or keep them dormant the entire time you ore storing them. I have seen one description of using a coin size piece of dry-ice inside the mylar bags before final sealing. The dry-ice idea would not be available after the event. There has to be a simple lime-stone and acid in a mason jar with a piece of aquarium tubing????? (Looking for details on this!???)

thank you for this, it gives me more ideas on what to look at, being married to a filipina we eat lots of rice, we are a family of 5, with younger children. We have enough food for 2yrs put away. but with this list in hand we will put more away.we look at long term, as u do not know what is really going to happen at any given time. while i am still alive i will make sure my family is taken care off and protected..only thing we dont have is a farm and that would be the bee’s knees…lots of people in here give great feed back and some bloody good idea…thank u everyone…for the wonderful comments, the advice never got astray..
I don’t own very many of the items on this list. Some of the items I own smaller, more cost-friendly alternatives of, others are way out of my league price point-wise and to attain them would take years. #18 for instance, which you really only would bother to buy if you had an off grid location of your dreams or had your forever-home which you were planning on using to bug in. There are items on this list that are much more attainable, having price points closer to $100.
While not all household conditions are perfect, be aware of the six enemies of food storage and do your best to mitigate their effect on your precious food supply.  This means you should avoid storing food in garages that are 90 degrees in summer and 30 degrees in winter.  I am repeating what I said before but it is important: empty your cupboards and closets of excess stuff and stow these items in the basement, attic, or garage.  This will make room for you to store your food inside your main living area where the ambient room temperature is stable.
MREs at the time were pretty much like they are now, but the menus have improved and some minor details have made this meal in a bag much more palatable if you can believe that. I served before they had things like M&M’s or skittles for dessert and hot sauce to flavor your food. We also didn’t have a built-in heater like they do now. If you wanted your MRE warm you were limited only by your creativity. MRE food packets are foil so they are both waterproof and allow you to heat them on almost anything. We would use the heater vents in our trucks, lay them on our stoves in the tent or on the block of our engines.
This author has taken the general guidelines and used those. This is the recommenations of various agencies. Having that gallon a day would be able to keep people in most climates alive but not thriving. While I agree one will need MORE water, this is the recommendations and a good place to start. Once a person realizes the amount their family NEEDs, they can add additional by saving soda bottles and washing and re filling those, to build a quick cheap supply.

In his book Dancing at Armageddon: Survivalism and Chaos in Modern Times, Mitchell, the sociology professor, develops a working theory of survivalism as a response to living in a society where every object we could possibly need is already taken care of for us. “The shelves are full, and the channels are full,” Richard tells me over the phone. “This is a response to a culture that has stripped away from us our sense of efficacy, our capacity to craft culture.”

After 9/11, my dad filled a duffel bag with some energy bars, a couple gallons of water, some penicillin, and a map. Amid scaremongering headlines about imminent anthrax and “dirty bomb” attacks in the city, he wanted to have some supplies on hand in case we needed to get out of Brooklyn fast. Were he to assemble such a bag today, he’d likely stumble on a number of companies promising a more wholesale brand of disaster preparedness: a box full of shelf-stable freeze-dried meals, to be revived from their dessicated state with the addition of boiled water.