How to Assemble a Home Emergency Kit: 4 Essentials You Need

TL;DR: A basic home emergency kit should include 1 gallon of water per person per day for three days, non-perishable food for 72 hours, a first aid kit with prescription medication copies, flashlights with extra batteries, and copies of critical documents in a waterproof pouch. Store everything in one portable container and check expiration dates twice a year.

_Last reviewed: July 2026 · 6 min read_

Most homeowners realize they need an emergency kit only after a storm knocks out power or a water main breaks. By then, stores are cleared out and your household is improvising in the dark. A properly stocked kit takes two hours to assemble, costs $150–$300, and can keep your family safe for three days without utilities or outside help.

Okoniq Property Hub lets you log your kit's contents, set reminders to rotate water and batteries, and attach photos of supply locations so anyone in the household knows where to find them.

What water and food supplies do you need for three days?

The Federal Emergency Management Agency recommends 1 gallon of water per person per day — half for drinking, half for sanitation. A family of four needs twelve 1-gallon jugs for a 72-hour supply. Store-bought bottled water lasts 1–2 years; rotate it every six months to stay fresh. Avoid milk jugs or used soda bottles — they degrade and harbor bacteria.

For food, focus on shelf-stable items that require no cooking: canned beans, tuna, peanut butter, granola bars, dried fruit, and crackers. Include a manual can opener. If you have infants, stock formula and baby food. Pets need three days of food and water too. Replace perishable items annually; mark the kit's refresh date on your calendar each January and July.

Keep a cooler and reusable ice packs nearby — if power goes out, you can transfer fridge essentials and buy yourself another 24–48 hours. Learn how to diagnose a ceiling water stain early so you're not surprised by a slow roof leak during a storm.

What medical and hygiene items belong in the kit?

A basic first aid kit should include adhesive bandages in multiple sizes, sterile gauze pads, medical tape, antiseptic wipes, tweezers, scissors, a digital thermometer, and over-the-counter pain relievers. Add a week's supply of any prescription medications — or at minimum, a written list of drug names, dosages, and prescribing doctors. Include copies of medical insurance cards.

For hygiene, pack moist towelettes, garbage bags with ties, a toothbrush and toothpaste for each person, soap, and feminine hygiene products. If municipal water stops flowing, you'll need a way to stay clean. A 5-gallon bucket with a snap-on toilet seat lid and heavy-duty bags turns into a sanitation system when plumbing fails.

Store a small bottle of bleach for water purification if you run out of bottled supply — 8 drops of unscented household bleach per gallon of clear water, 16 drops if cloudy. Let it stand 30 minutes. This is a last resort, not a replacement for stored water.

What tools and power sources should you include?

Start with two flashlights and a hand-crank or battery-powered radio — preferably one that receives NOAA weather alerts. Keep a minimum of two sets of spare batteries for each device. LED headlamps free your hands and last longer than incandescent flashlights.

Add a multi-tool or Swiss Army knife, duct tape, a whistle (to signal for help), local paper maps, and a battery bank pre-charged for phones. If you rely on a well pump, note that loss of electricity means no water — a basement dehumidifier won't help if the power is out, so prioritize stored water even more.

Include a wrench or pliers to turn off utilities — gas leaks and ruptured water lines are common after earthquakes or floods. Label your shutoff valves now and photograph them. If you have aluminum wiring, know where your main breaker panel is and how to kill power safely.

Where and how should you store the kit?

Keep everything in a single large plastic bin with a secure lid — 18-gallon totes work well for a family of four. Store it in a cool, dry, accessible spot: a hall closet, garage shelf, or basement corner that won't flood. Avoid attics — summer heat degrades batteries and food faster.

Label the bin clearly: "Emergency Kit — Do Not Move." Tell every household member where it lives. If you're closing a seasonal home for winter, leave a smaller kit on-site in case a caretaker or emergency responder needs supplies.

Keep a smaller go-bag with copies of critical documents — birth certificates, property deed, insurance policies, bank account numbers, and a USB drive with digital backups. Store these in a waterproof pouch inside the main kit. If you evacuate, you'll grab the whole bin.

What else should you customize for your household?

If anyone has mobility challenges, include extra prescription eyeglasses, hearing aid batteries, or a spare cane. For small children, pack comfort items — a favorite toy or book can reduce stress during a crisis. Include cash in small bills; ATMs and credit card readers won't work without power.

Add a battery-powered or hand-crank phone charger if your household depends on cell service for medical alerts or work communication. If you heat with a boiler or baseboard system, know that most require electricity to circulate water — plan for alternative heat sources or sleeping bags rated for cold weather.

Consider your region's risks. Earthquake zones need hard hats and work gloves. Coastal areas should include tarps and rope for temporary roof repair. If you've dealt with basement waterproofing issues, keep a portable sump pump and extension cord in the kit.

FAQ

How often should I check my emergency kit?

Check water, food, batteries, and medications every six months — set reminders for January 1 and July 1. Replace expired items immediately. Test flashlights and radios each time you check the kit.

Can I use tap water if I run out of bottled supply?

Yes, if the water system is still functioning. Boil tap water for 1 minute (3 minutes above 6,500 feet elevation) or treat with 8 drops of unscented household bleach per gallon, then let stand 30 minutes before drinking.

What size kit do I need for a family of four?

Plan for 12 gallons of water (1 gallon per person per day for 3 days), 12 meals' worth of non-perishable food, and a first aid kit with enough supplies for minor injuries. An 18-gallon storage bin typically holds everything.

Should I keep a separate kit in my car?

Yes. A car emergency kit should include water, non-perishable snacks, blankets, jumper cables, a flashlight, and a first aid kit. If you live in a cold climate, add an ice scraper, sand or kitty litter for traction, and hand warmers.

Do I need special supplies for pets?

Include three days of pet food, water, medications, vaccination records, a leash or carrier, and waste bags. Keep a recent photo of your pet in case you're separated during an evacuation.

This is educational information, not emergency-response or medical advice. Consult local emergency management offices for region-specific preparedness guidance, and speak with your doctor about storing prescription medications safely.