30-Day Emergency Preparedness Plan: Build It in Four Weeks

Three days is the minimum. The American Red Cross recommends a 2-week supply at home, and longer disruptions (a major earthquake, a regional winter storm, a long supply interruption) are why many households plan for a month. Thirty days sounds like a lot. The trick is that you don’t buy it all at once. You build it in four weekly steps, mostly from food your family already eats, so nothing goes to waste.

This plan is for normal households on normal budgets. No bunker, no 50-pound sacks of wheat you’ll never grind. Just a deeper pantry, a water plan, a power plan and a sanitation plan.

Free download: 30-Day Preparedness Plan (PDF). It includes the four-week checklist and a per-person table.

What 30 days looks like, per person

Category	Target per person, 30 days	Notes
Water	about 30 gallons (1 gal/day)	Store what fits, then add a filter so other water becomes usable
Calories	about 60,000 (2,000/day)	Build from foods you already eat
Medications	30 days if your doctor and insurer allow, at least 7	Ask your pharmacist about refill timing
Power	phones, light, and any medical device	Batteries and solar first; fuel only with a safety plan
Sanitation	bucket toilet, liners, absorbent, hygiene supplies	Often the first real problem in a long outage

Thirty gallons of water per person is a lot of space: 120 gallons for a family of four. Most homes can’t store it all, and that’s fine. Store what you reasonably can (two weeks is a great target), then rely on filtration and purification for the rest.

The four-week plan

Week 1: Finish the 72-hour kit and make a plan

If you haven’t already, build the 72-hour kit first: water, food, light, first aid and sanitation for three days. Then:

• Find and label your utility shutoffs: gas, water and the main electrical panel. Put a wrench next to the gas meter if your utility recommends it.
• Write a one-page family plan: meeting places, an out-of-area contact, who picks up the kids, and where the kit lives. Ready.gov has a free template.
• Sign up for local emergency alerts from your county or city.

Cost this week: mostly your time.

Week 2: Double up on staples (to 14 days)

Each time you shop, buy one or two extra of the shelf-stable foods you already eat. Keep going until you have about two weeks. Good candidates:

• Rice, pasta, oats, flour and boxed cereal
• Beans and lentils, dry or canned
• Canned vegetables, fruit, soups, meat and fish
• Peanut butter and other nut butters
• Shelf-stable or powdered milk
• Cooking oil, salt, sugar, honey, spices, bouillon, coffee and tea

Add a second manual can opener and a camp stove with fuel for cooking during an outage. A Gas One GS-3400P runs on butane or propane. Outdoors only, always.

If you want a few true long-shelf-life meals for variety, freeze-dried pouches like Mountain House Chili Mac (6-pack) only need hot water. Try one before you buy a lot of anything.

Cost this week: spread across normal grocery trips, often $10–25 extra per trip.

Week 3: Water and power

This is the week that makes a 30-day plan realistic.

Water.

• Add storage you can actually lift and rotate: 7-gallon Aqua-Tainers or 2.5-gallon jugs.
• Add a higher-capacity filter for the household. A gravity system like the Platypus GravityWorks filters a few liters at a time without pumping. Check the product’s ratings: most backpacking filters handle bacteria and protozoa but not viruses or chemicals.
• Keep unscented bleach (fresh, under a year old) and purification tablets as a backup. The EPA’s dose is 8 drops of 6% bleach per gallon; stir and wait 30 minutes.
• Know your local backup sources: a pool, rain barrel or creek. Filter first, then disinfect. Water from a pool or creek is for sanitation unless you treat it properly.

Power.

• Power banks for every phone.
• A portable power station for lights, phones, a fan, a router or a small medical device. A Jackery Explorer 300 (292 Wh) is a small, popular option. The EcoFlow River 2 Max 500 (499 Wh) uses LiFePO4 cells, which are rated for more charge cycles.
• A solar panel to recharge them, like the Jackery SolarSaga 100W. In a long outage, sunlight is the one fuel that keeps arriving.
• If you use a fuel generator, it goes outside, at least 20 feet from doors and windows, per CDC guidance, with a working battery CO alarm inside.

Also this week: stock a second first aid kit (one for home, one for the car).

Cost this week: this is the expensive one. Water storage and a filter are usually under $150. Power stations range from a few hundred dollars up. It’s fine to stop at power banks and a solar panel and add a station later.

Week 4: Reach 30 days and organize it

• Fill remaining food gaps until you reach about 30 days.
• Medications: ask your doctor and pharmacist whether you can keep a 30-day reserve. Some insurers allow early refills or 90-day supplies.
• Hygiene and cleaning: soap, toothpaste, toilet paper, feminine supplies, diapers, bleach, trash bags.
• Sanitation: a bucket toilet, heavy contractor bags, and kitty litter or sawdust.
• Pets: 30 days of food, any medications and extra water.
• Comfort items: books, games, coffee, a treat. A month is long; morale matters.
• Label everything with the purchase date, and write a simple inventory list.

Storage that actually works

• Cool, dry and dark. Heat is the enemy of food, water and batteries. A closet or under a bed is better than a hot garage or attic.
• Repack bulk staples (rice, beans, oats) into 5-gallon Mylar bags with oxygen absorbers inside food-grade buckets. For everyday buckets you open often, Gamma Seal lids make them screw-top and easy to open.
• Keep it off concrete floors and away from chemicals and fuel.

Rotation beats a pile

The most common way a 30-day supply fails isn’t a disaster. It’s expiration. Use first-in, first-out: put new cans at the back, eat from the front, and replace what you use on your next trip. Check dates every quarter (an easy rhythm is the first weekend of January, April, July and October). Replace home-filled water about every six months, and follow the manufacturer’s directions for anything else.

Safety notes that matter

• Run generators, grills and camp stoves outdoors only, away from windows, doors and vents. The CDC is clear: carbon monoxide from these devices can kill, and you can’t see or smell it.
• Store fuel safely and legally, in approved containers, away from living space and heat sources. Check local rules on how much you can store.
• Keep a bucket toilet setup so sanitation doesn’t become your emergency.
• Don’t let a power station or battery charge unattended on a bed or couch. Charge on a hard surface.
• Practice. Do a 24-hour “power and water off” weekend. You’ll learn more from one day than from any list.

What this costs (roughly)

Most of a 30-day supply is food you’d eat anyway, bought a little early. Beyond groceries, a realistic budget for one household is:

• Water storage + filter + tablets: about $100–200
• Light, radio and power banks: about $75–150
• Optional power station + solar: $250–600+
• Sanitation and first aid: about $60–120

Spread over a month or two, that’s manageable, and every piece is useful in an ordinary power outage too.

Shop the list

I collected the items I’d shop for on the Emergency Preparedness gear page. Those are affiliate links. Start with water filtration and power, then fill in the rest. And if you haven’t yet, build a go bag for the days when staying home isn’t an option.

Sources

• American Red Cross, Survival Kit Supplies: 2-week home supply of water and food, 7-day medications.
• Ready.gov (FEMA), Build a Kit and Make a Plan: 1 gallon per person per day, maintaining your kit, family plans.
• U.S. EPA, Emergency Disinfection of Drinking Water: bleach dosing and alternative sources.
• CDC, Carbon Monoxide Poisoning: generators at least 20 feet from windows and doors.

General guidance, not medical or professional advice. Follow your local emergency officials. Gear picks are based on public specs and reviews; we haven’t hands-on tested every item.

Related: the 72-hour kit · how to build a go bag · preparedness gear list.