If you do only one thing on this entire site, store water and food. It is the least glamorous part of preparedness and the single most important. Everything else is a refinement on top of a family that can drink and eat for two weeks without a store, a tap, or a working grid. This guide gives you the real numbers and the methods that keep those supplies good for years instead of months.
How much water
The standard is one gallon per person per day. Half of that is for drinking and the rest for cooking and basic hygiene. Do not forget pets, roughly an ounce per pound of body weight per day. For years the advice was three days of supply. Emergency managers quietly moved that to two weeks, because that is how long real disruptions last once roads, power, and stores are affected.
So the target for a family of four is fourteen gallons per person, or about fifty-six gallons total. That sounds like a lot until you realize it is a corner of a closet or a few containers under the beds.
| Household size | 2-week water target |
|---|---|
| 1 person | 14 gallons |
| 2 people | 28 gallons |
| 4 people | 56 gallons |
| 6 people | 84 gallons |
How to store water so it stays safe
- Commercial bottled water is the simplest. Buy it, date the flat, and rotate it. It keeps for years.
- Food-grade containers filled from the tap work well. City tap water is already treated and needs nothing added if your containers are clean and sealed.
- Never reuse milk or juice jugs. The sugars and proteins are impossible to fully clean out and will grow bacteria. Old soda bottles, rinsed well, are fine because they held only sugar water and are built to seal.
- Store cool and dark. Heat and sunlight degrade plastic and encourage growth. A closet beats a garage; a garage beats a sunny window.
- Refresh tap-filled containers about once a year, and always keep a way to treat more, because storage buys you time but a filter or a bottle of plain bleach lets you make water indefinitely.
Your water backstop
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How much food
Two weeks per person is the same target as water, and there are two layers to it. The first layer is the everyday pantry: shelf-stable versions of what your family already eats. The second layer, for those who want deeper security, is long-term storage food that lasts decades.
The everyday pantry, done right
This is where most families should start, because it is cheap, it never goes to waste, and your family already likes it.
- Buy a little extra of what you normally eat: canned beans and vegetables, rice, pasta, oats, peanut butter, canned meat and fish, cooking oil, salt, and comfort items.
- Favor foods that need little cooking and no refrigeration.
- Own a manual can opener and keep it with the food.
- Rotate. Store what you eat, eat what you store, and replace as you go. This one habit keeps your whole pantry from ever expiring.
Date everything, front to back
Write the purchase date on every container with a marker and always shelve new stock behind old stock. This first-in, first-out habit is the difference between a pantry that quietly feeds you for decades and a closet of expired cans you throw out in disgust. It takes five seconds per item.
Long-term storage for the deeper layer
Once the everyday pantry is handled, dry staples like rice, beans, wheat, and oats can be stored for twenty-five years or more in Mylar bags with oxygen absorbers inside food-grade buckets. That is a project worth doing on its own, and we walk through it step by step in long-term food storage. For families who would rather buy it done, sealed emergency food buckets offer decades of shelf life with no packing labor.
Buy-it-done option
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A simple way to track what you have
Beyond dating and rotating, knowing your actual days-of-supply number, rather than a vague sense that the pantry “looks full,” is what turns storage into real preparedness. Our free tool ThisTracks Your Pantry tracks exactly this, category by category, with an automatic expiry radar so aging stock gets flagged for rotation before it goes to waste rather than after.
Where the two-week target actually comes from
The shift from a three-day to a two-week standard reflects real-world data on how long disruptions typically last once you account for the whole chain: power restoration, water system repair, road clearing, and store restocking. A three-day supply covers a short, sharp outage but leaves a household exposed the moment recovery drags on, which it very often does after a major regional event. Two weeks is not an arbitrary round number; it is the point at which most historical disruptions have resolved, making it a genuinely evidence-based target rather than a marketing figure.
Common questions
Does the one-gallon-per-person number change in hot climates?
Yes. In hot weather or with any physical exertion, needs can rise to 1.5 to 2 gallons per person per day, so households in consistently hot climates should plan toward the higher end of that range rather than the flat national average.
What is the actual shelf life of properly stored bottled water?
Commercially bottled water in its original sealed container is commonly considered safe indefinitely from a purely microbial standpoint, though most manufacturers print a “best by” date, often two years out, related to plastic taste and container integrity rather than water safety itself. Rotating it every couple of years is a reasonable, low-effort habit even though the water itself rarely actually “goes bad.”
Is it safe to store water in the same room as fuel, like a generator’s gas can?
No. Store water storage well away from any fuel, chemicals, or pesticides, since even sealed containers can be compromised by nearby vapors over long periods, and a leak or spill near stored water is a genuine contamination risk. Keep water in a dedicated, chemical-free area of the home.
The numbers to remember
- Water: one gallon per person per day, two weeks deep. Store cool, dark, and dated.
- Food: two weeks per person, starting with what you already eat.
- Rotate everything. First in, first out, dates on every item.
- Keep a filter and a bottle of plain bleach so you can always make more water.
Get this base in place and you have done the hardest, most valuable work in all of preparedness. Everything else on this site builds on top of a family that can drink and eat when the normal world stops for two weeks.
