Japan Is Urging Households to Stock a Week of Supplies. How Much Does Your Family Need?
Japan · One-week stockpileJapan urges households to keep at least 3 days, ideally a week, of supplies.
On November 2, 2026, Japan’s government asked every household to keep at least three days, and ideally a week, of water, food and portable toilet supplies at home. It is not a warning about a specific disaster. It is a calm reminder that help can take time to arrive. Here is what a 3-day and a 1-week emergency supply look like for a US or Canadian family, in plain numbers.
Start with the basics: get our free one-page 72-hour go-bag checklist (printable), or read the full 72-hour go-bag checklist online.
This article is part of our series on what governments around the world tell families to stockpile.
What Japan Is Asking Households to Do
Japan’s disaster management minister, Goshi Hosono, issued an “urgent request” on November 2, 2026, the day Japan’s new Disaster Management Agency opened. It goes to government ministries, every prefecture and the public. The official request says to plan on 3 liters of drinking water per person per day, close to the US guideline of one gallon. Before the launch, in an interview with FNN (Fuji News Network), he described what he wanted from households:
“At least three days, and a week if possible” of food, toilet supplies and water at home, so families can manage “even without public support.”
His reasoning: the more people who can look after themselves, the more help can go to those who really need it. He named Japan’s long-term risks, including a Nankai Trough earthquake, a major quake under Tokyo and a possible Mount Fuji eruption. Reports, including the Seoul Economic Daily, are clear that this is general preparedness, not a forecast. Japan has long suggested three days to a week; what is new is the national push.
The lesson travels well. Ice storms, hurricanes, wildfires and long power outages can cut off stores and water in North America too.
3-Day vs 1-Week Emergency Kit: What the US and Canada Recommend
- United States: Ready.gov (FEMA, the Federal Emergency Management Agency) says you may need to get by on your own for several days, and recommends one gallon of water per person per day plus at least a several-day supply of non-perishable food. Three days is the common starting point.
- Canada: Get Prepared (Canada.ca) asks households to plan for at least 72 hours, with two litres of water per person per day for drinking, cooking and hygiene, and to add more supplies if you can in case the emergency lasts longer. Health Canada suggests two more litres per person per day for cooking and cleaning.
- Japan: at least 3 days, ideally a week, with toilet supplies named alongside food and water.
Think of three days as the floor and a week as the goal. You do not need to buy it all at once.
How Much Water to Stockpile
Here is the math for a family of four, using each country’s guidance. Add extra for pets, hot weather, nursing mothers and anyone who is sick; Ready.gov notes needs can double in very hot weather.
| Family of 4 | 3 Days | 1 Week |
|---|---|---|
| US (1 gallon per person per day) | 12 gallons | 28 gallons |
| Canada (2 litres per person per day) | 24 litres | 56 litres |
| Canada with cooking and cleaning (4 litres) | 48 litres | 112 litres |
Store-bought bottled water in its sealed container is easiest. If you fill your own food-grade containers, Ready.gov says to replace that water every six months. The Family Guard binder has this whole plan ready-made, so a nominal one-time cost saves you building it from scratch.
How Much Food for a One-Week Emergency Supply
Count meals, not cans. Three meals a day for four people is 36 meals for three days and 84 for a week. Choose food your family already eats that needs no fridge and little or no cooking:
- Canned soups, stews, beans, tuna and chicken
- Peanut butter, crackers, cereal and granola bars
- Dried fruit, nuts and shelf-stable milk
- Baby food, formula and pet food if you need them
- A manual can opener (both Ready.gov and Canada.ca list one)
Canada.ca reminds families to plan around food allergies and intolerances. An easy habit is to buy two of everyday staples and eat the oldest first, so your stockpile stays fresh without waste.
Emergency Toilet Supplies: The Part Most Kits Forget
Japan put toilets right next to food and water for a reason: when the water stops, the toilet may not flush. Ready.gov’s kit list includes moist towelettes, garbage bags and plastic ties for personal sanitation, plus soap, hand sanitizer and disinfecting wipes. A simple home setup:
- A bucket with a tight-fitting lid (or a camping toilet)
- Heavy-duty liner bags and ties
- Toilet paper, wet wipes and hand sanitizer
- Disinfecting wipes and feminine supplies
Plan on several bags per person per day, and check with your local government on how to dispose of them after an emergency.
Build Up to a Week Without Stress
- This week: three days of water and food on one shelf, plus the toilet basics.
- This month: add a flashlight, radio, batteries, first aid kit and a week of daily medicines.
- Next month: stretch food and water to a full week, and write down where everything is.
The Family Guard binder turns these steps into a ready-made 30-day setup plan with fill-in pages for supplies, contacts and medical details, for a one-time $39. If you might need to leave home instead, see our household evacuation plan guide.
Frequently Asked Questions
How Much Water Should I Store for an Emergency?
Ready.gov recommends at least one gallon of water per person per day, for drinking and sanitation, for several days. Canada.ca recommends two litres per person per day for drinking, cooking and hygiene, and Health Canada suggests two more litres per person per day for cooking and cleaning if you can. Add extra for pets, hot weather, nursing mothers and anyone who is sick.
Is a 3-Day or 1-Week Emergency Supply Better?
Three days (72 hours) is the minimum both the US and Canadian governments recommend. A week gives more cushion if roads, stores or water service are out longer, which is why Japan is now asking households to aim for a week. Start with three days, then build toward a week a little at a time.
How Much Food Do I Need for a One-Week Emergency Supply?
Plan on three simple meals a day per person, using food your family already eats that does not need a fridge: canned meals, beans, tuna, peanut butter, crackers, cereal, dried fruit and shelf-stable milk. For a family of four, a week is about 84 meals. Include a manual can opener.
What Toilet Supplies Do I Need if the Water Is Off?
If water service stops, toilets may not flush. Ready.gov lists moist towelettes, garbage bags and plastic ties for personal sanitation, and recommends soap, hand sanitizer and disinfecting wipes. Many families also keep a bucket with a tight lid, heavy-duty liner bags and toilet paper.
Is Japan Warning of a Specific Disaster?
No. Reports say the request is general preparedness tied to the launch of Japan's Disaster Management Agency on November 2, 2026, with major earthquakes and a possible Mount Fuji eruption cited as the long-term risks. It is not an evacuation order or a forecast.
News and Official Guidance Used on This Page
- Disaster Management Agency (Cabinet Office), “Urgent Request for Thorough Advance Disaster Preparedness”
- FNN Prime Online (Japanese), October 2026: Minister Hosono on the “urgent request” (before launch)
- Seoul Economic Daily, October 27, 2026: Japan to urge citizens to stockpile
- Build a Kit, Ready.gov and Water, Ready.gov (FEMA)
- Emergency Kit Checklist, Government of Canada (Get Prepared)
- Food and Drinking Water Safety in an Emergency, Health Canada
This page is general household guidance. Always follow instructions from local emergency officials first.