At a Glance
| Product | Best For | Rating | Our Verdict | Buy |
|---|---|---|---|---|
| AquaReserve 4-Gallon Emergency Water Storage | Families | 4.4 | Add stored water — the kit's biggest gap. | Check Price |
Emergency managers consistently give the same advice: be ready to be on your own for at least 72 hours. That is roughly how long it can take for outside help to reach you after a major disaster. This guide walks a family of four through exactly what a 72-hour kit needs, and how to build it without overspending.
Why 72 hours?
The first three days after a disaster are when roads are blocked, stores are closed or stripped, and emergency services are overwhelmed. A 72-hour kit bridges that gap so your family is self-sufficient until normal supply chains recover.
The five categories that matter
1. Water
Store one gallon per person per day — twelve gallons for a family of four over three days — plus a way to purify more. Water is the first thing you run out of and the hardest to improvise.
2. Food
Choose calorie-dense, no-cook, long-shelf-life food. A sealed freeze-dried bucket stores for decades; ration bars are compact for the go-bag.
3. Warmth and shelter
Mylar blankets weigh nothing and retain most of your body heat. Add them to every bag and vehicle.
4. Light and power
A rechargeable lantern that doubles as a power bank, plus a hand-crank radio, covers light, information, and phone charging in one layer.
5. First aid and medication
A comprehensive family first aid kit plus a small supply of any critical prescriptions rounds out the kit.
Build it or buy it?
A pre-assembled kit gets you 80% of the way in one purchase; customizing the last 20% (medications, documents, comfort items for kids) is where you make it truly yours.
Our Picks in Detail
2AquaReserve 4-Gallon Emergency Water Storage
Stackable BPA-free water containers for long-term household storage.
Pros
- Food-grade and stackable
- Covers the one-gallon-per-person rule
- Light-resistant for longer storage
Cons
- Bulky to store
- Rotate periodically
Verdict: Add stored water — the kit's biggest gap.
Check Price on AmazonFrequently Asked Questions
How much water do I need for a 72-hour kit for four people?
Store one gallon per person per day. For a family of four over three days that is twelve gallons, plus a way to purify additional water if the outage runs long.
Should I build my own 72-hour kit or buy a pre-made one?
A pre-assembled kit covers the core essentials in one purchase and saves time. Most families then customize it with medications, copies of documents, and comfort items for children.
How often should I check and rotate my emergency kit?
Review your kit twice a year. Rotate water and any food without a multi-year shelf life, check battery-powered devices, and update medications and childrens sizes.