A three-day food and water plan starts with a household total, not a shopping cart and not a backpack. Calculate what the people in the household need, add the requirements that are specific to them, then assign the supply across places they can actually reach.
This checklist covers only the food-and-water layer of the larger VIVAL 72-Hour Kit. It does not replace the rest of the portable system, an evacuation plan, or current instructions from local officials.
Quick Answer: Build the Total First, Then Split the Load
CDC recommends storing at least one gallon of water per person per day for three days. For the basic household calculation, multiply the number of people by three gallons. Then separately add water for pets and any extra amount required by heat, pregnancy, illness, activity, sanitation, or other household needs. Those additions are real, but one universal multiplier would not fit every household.
The total storage target is not an instruction to make one person carry three gallons. Divide it into three practical layers:
- Carry now: the amount the assigned person can safely manage for the route, conditions, and expected travel time.
- Vehicle reserve: additional protected water and food when travel by vehicle is part of the plan.
- Home reserve: the larger share for sheltering in place or replenishing the portable layer.
For food, choose familiar shelf-stable items that each person can eat and that require little water, fuel, refrigeration, or cleanup. Plan meals and snacks by person and by day. Do not force every household into a single calorie number; age, body size, activity, health, and dietary requirements differ.
Calculate Your Household’s Three-Day Water Baseline
Start with people
Use the CDC baseline as a planning floor:
Number of people × 1 gallon × 3 days = basic three-day household water total
For example, two people begin with six gallons; four people begin with twelve. That total covers drinking and other uses included in the public-health baseline. Keep the calculation visible so another household member can check it.
| Calculation | Your number |
|---|---|
| People in household | |
| People × 3 gallons | |
| Additional household needs | |
| Pet water | |
| Total three-day target |
Add pets and household-specific needs
CDC notes that more water may be needed in hot climates and for people who are pregnant or ill, as well as for pets. Needs can also change with age, activity, disability, medical equipment, sanitation requirements, and the household’s food choices. A meal that requires added water draws from the same limited supply unless that preparation water is counted separately.
Do not guess at clinical requirements. Record the amount used during an ordinary day where practical, check pet guidance with a veterinarian, and ask the relevant care team about needs affected by a medical condition, medication, pregnancy, infant feeding, or a prescribed diet.
Divide Water Across Carry, Vehicle, and Home Layers
Allocation is a logistics decision. The route, weather, travel time, transportation, storage conditions, and abilities of the person carrying the load all matter. Write down where every part of the household total lives; water that exists but cannot be reached is not a dependable reserve.
Carry now
Assign a portable amount only after considering the person and the trip. Include accessible drinking water for children, older adults, and anyone who may not be able to open, lift, or manage the selected container without help. Test the filled container, not an empty substitute.
Vehicle reserve
A vehicle can move additional supply, but it is not climate-controlled storage. Secure containers so they do not become loose loads, protect them from damage, and inspect them for leaks, broken seals, freezing, heat exposure, or expired manufacturer dates. If the route or vehicle changes, revise the allocation.
Home reserve
Keep the larger reserve in a known location protected from sunlight, temperature extremes, household chemicals, pests, and physical damage. Place heavy containers where the intended user can dispense from them without unsafe lifting. Do not put the entire supply in one location if a leak or blocked room could make all of it inaccessible.
Use the VIVAL 72-hour kit build guide for the complete method for assigning shared supplies, editing the load, organizing containers, and testing what must travel.
Store Water Safely and Make It Reachable
CDC identifies unopened commercially bottled water as the safest and most reliable emergency source. Keep it sealed and follow the label and manufacturer storage instructions. For water filled at home, use food-grade water-storage containers with tight closures. Never use a container that previously held fuel, pesticides, bleach, or another toxic substance.
Label home-filled containers as drinking water and record the fill date. CDC advises replacing home-filled water every six months and storing it in a cool place away from direct sunlight and toxic substances. Follow the CDC cleaning and sanitizing instructions rather than improvising a container-cleaning recipe.
Check that each container can be opened and dispensed by the people expected to use it. Record where the opener, pump, spigot, or other required part is stored. For container capacity, filled-weight, dispensing, stacking, and placement decisions, use the VIVAL emergency water storage guide.
During an incident, a boil-water, do-not-drink, or do-not-use notice overrides the household plan. Follow the exact current instructions from local water and public-health authorities.
Add Treatment as a Backup, Not the Baseline
A treatment method does not replace safe stored water or create a water source. Filters, purifiers, and chemical treatments are not interchangeable. Their effectiveness depends on the specific device, the water hazard, correct use, maintenance, and label limits.
Do not assume a filter removes viruses, chemicals, salt, or every contaminant. Identify the likely source and hazard first, then select a method that explicitly addresses it. If authorities issue a contamination notice, use only the methods and water sources they approve for that event.
The VIVAL family emergency water filter guide explains hazard matching, treatment limits, throughput, maintenance, and the difference between a backup device and stored water.
Build a Three-Day Food Plan People Will Actually Eat
Choose low-preparation foods
Start with foods the household already eats. Favor shelf-stable choices that can be eaten as packed or prepared simply. Include a mix of meals and snacks, and account for the people who need different textures, portions, ingredients, or assistance opening packages.
A three-day food plan is more useful than a pile of unrelated items. Assign each item to a person and a day. That exposes missing meals, repeated foods nobody wants, and packages that cannot be divided cleanly.
Check water, fuel, tools, and cleanup requirements
Read every preparation instruction before the food goes into storage. Record whether it needs:
- Added water, including the amount
- Heating or cooking
- A manual can opener or another tool
- A bowl, cup, utensil, or safe preparation surface
- Refrigeration after opening
- Handwashing or additional cleanup water
If the plan depends on cooking, confirm that the fuel, equipment, ventilation, and location are appropriate and permitted. Never use outdoor fuel-burning equipment indoors or in another enclosed space. The simpler option is often food that remains useful when power, refrigeration, or cooking is unavailable.
Plan by person and by day
Write the plan around actual household members rather than a generic calorie target. Include drinks or preparation water within the water calculation, and note any ingredient, texture, cultural, religious, allergy, or medical restriction that affects the selection.
Keep labels and preparation instructions with the food. If outer packaging is removed, preserve the product name, ingredients and allergen information, preparation directions, manufacturer date, and any storage warning needed to use it safely.
Adjust for Infants, Allergies, Medical Needs, and Pets
A generic shelf-stable menu is not enough when one person or animal has a specific need. Review the plan for:
- Infant feeding supplies and the household’s established feeding plan
- Children who need age-appropriate food, help opening it, or familiar options
- Allergies and the risk of ingredient mix-ups or cross-contact
- Diabetes, swallowing or texture needs, prescribed diets, and other medical requirements
- Food or water needed with medication according to the label and care plan
- Older adults and people who need packaging, utensils, or instructions made accessible
- Pet food, pet water, bowls, medication, and feeding instructions
Keep this step practical and individualized. Do not change an infant-feeding method, prescribed diet, medication routine, or clinical hydration plan based on a general checklist. Resolve those questions with the person’s care team or the animal’s veterinarian before supplies are needed.
72-Hour Food and Water Working Checklist
Quantity and household worksheet
- ☐ Count every person the supply must support.
- ☐ Calculate people × one gallon × three days.
- ☐ Add and document household-specific water needs.
- ☐ Add pet water based on the household’s veterinary plan.
- ☐ List dietary, allergy, texture, access, and preparation constraints.
- ☐ Confirm every day has food assigned to every person.
Water inventory by location
| Location | Quantity | Container or package | Assigned person | Date to review |
|---|---|---|---|---|
| Carry now | ||||
| Vehicle reserve | ||||
| Home reserve | ||||
| Total assigned | Compare with the calculated household target. | |||
Day 1, Day 2, and Day 3 food plan
| Day | Person | Meals and snacks | Water or tools needed | Storage location |
|---|---|---|---|---|
| Day 1 | ||||
| Day 2 | ||||
| Day 3 |
Preparation and access check
- ☐ Every intended user can reach, open, and dispense assigned water.
- ☐ Added preparation water is included in the water plan.
- ☐ Required tools and utensils are present and tested.
- ☐ No meal depends on unavailable refrigeration or unsafe indoor cooking.
- ☐ Labels, ingredients, allergens, dates, and instructions remain readable.
- ☐ Carry containers have been tested while full.
- ☐ Another household member knows the locations and assignments.
This worksheet covers food and water only. Use the complete interactive 72-Hour Kit checklist to review shelter, clothing, light, communication, health, documents, tools, and the other parts of the system.
Label, Date, Inspect, and Rotate the Supply
Rotation works when it is recorded. Keep a simple inventory on the storage shelf, inside the bin, or in a shared household file:
| Item | Quantity | Location | Packed or fill date | Owner | Next review |
|---|---|---|---|---|---|
Follow manufacturer labels and current public-health guidance instead of applying one expiration rule to every item. Inspect package integrity, storage conditions, water seals, containers, dates, and accessibility. Rotate familiar food into normal household use before its marked date where practical, replace what was used, and correct any part of the plan that proved difficult.
Set the next review before closing the container. Review again after a move, household change, new pet, medical or dietary change, route change, extended temperature exposure, or any use of the supply.
72-Hour Food and Water FAQ
How much water does one person need for 72 hours?
CDC recommends storing at least one gallon per person per day for three days, so one person begins with a three-gallon baseline. Add more where hot climate, pregnancy, illness, pets, sanitation, activity, food preparation, or other household needs require it.
Should all three gallons go in a backpack?
No universal carry amount is safe or practical for everyone. The three gallons are a total storage baseline for one person, not a backpack requirement. Divide the supply among carry, vehicle, and home layers according to the route, conditions, transportation, and the abilities of the person moving it.
Does a water filter replace stored water?
No. Safe stored water is the baseline. Treatment is a backup only when a source is available, the method addresses the actual hazard, and it is used and maintained according to its instructions and current public-health guidance.
What food works when power and refrigeration are unavailable?
Use familiar shelf-stable food that can be eaten as packed or prepared with little water, fuel, equipment, and cleanup. Check labels, allergens, access needs, tools, and preparation requirements before storing it.
How often should emergency food and water be rotated?
There is no single interval for every food and water package. Follow manufacturer dates, storage instructions, package condition, and current public-health guidance. CDC specifically advises replacing water filled at home every six months. Record a review date and inspect again after use or damaging storage conditions.
Bottom Line
Calculate the household total first. Assign every gallon and every meal to a person, day, and location. Keep the portable share manageable, protect the larger reserves, count preparation requirements, and write down the next review.
The strongest plan is not the biggest pile of supplies. It is the smallest complete system that fits the people who depend on it. Use the VIVAL kit principles to remove unsupported extras and keep every choice useful, reachable, and maintained.