Emergency water storage containers are food-grade, tightly sealed vessels built to hold potable water for disasters or backup use, sized from 3.5-gallon jugs to 500-gallon tanks.
When the tap stops running, stored water becomes your lifeline. The right container keeps that water drinkable for months, but the wrong one can turn your emergency supply into a health hazard. This guide covers what to buy, how to prepare it, and the mistakes that ruin stored water.
What Makes A Container Safe For Drinking Water
Food-grade materials are the foundation of safe storage.
Polyethylene plastic is explicitly approved for food contact in official guidance. You’ll see this material listed as HDPE on most quality containers. What to avoid:
- Milk jugs or juice bottles that break down over time
- Glass, which shatters in an earthquake or freeze
- Any container that previously held toxic substances — Utah DEQ warns against these outright
- Thin single-use plastics never meant for long-term storage
Look for a tight-closing top, durable unbreakable material, and ideally a narrow neck for controlled pouring.
Container Sizes, Specs, And What They Cost
Emergency water storage spans from small stackable jugs to whole-house tanks. The right size depends on your family size, space, and budget — the common rule of thumb is one gallon per person per day.
| Container Type | Capacity | Typical Price |
|---|---|---|
| WaterBrick Standard (10-pack) | 3.5 gal each / 35 gal total | $319.95 |
| 5-Gallon Stackable Jug | 5 gal | ~$30–$60 each |
| Saratoga Farms 5-Gallon | 5 gal | Similar range |
| Readystore Essentials Kit | 40 gal (8 x 5-gal) | Kit pricing |
| 55-Gallon Barrel | 55 gal | ~$100–$150 |
| Sure Water 80-Gallon Tank | 80 gal | $249.95 |
| 100-Gallon Emergency Tank | 100 gal | $359–$530 |
| 150-Gallon Emergency Tank | 150 gal | $569–$660 |
Larger tanks from specialist suppliers range from 100 to 500 gallons, with diameters between 30 and 48 inches and heights from 42 to 71 inches.
They suit temporary setups but need more careful handling than rigid tanks. If you want to compare tested options, see our roundup of the best emergency water containers.
How To Sanitize And Fill Containers Correctly
Sanitizing before filling is non-negotiable. Utah DEQ recommends washing containers with soap and water, then rinsing with a bleach solution before filling.
The official disinfection method from the CDC calls for regular household liquid bleach with 5.25% sodium hypochlorite. Never use scented bleach, color-safe bleach, or bleach with added cleaners.
- Clear water: 4–5 drops of bleach per gallon
- Cloudy water: 16 drops per gallon (or filter first)
- Mix thoroughly, then let stand 30 minutes
- If chlorine smell remains, repeat and wait 15 more minutes
Storage Mistakes That Ruin Emergency Water
Even good containers fail when stored wrong. The CDC and Utah DEQ agree on these rules:
- Leave 2–3 inches of headspace so freezing water can expand without cracking the container
- Store off the ground on shelves or pallets, away from direct sunlight
- Keep containers in a clean, dry place with stable temperatures
- Label each container with the fill date and rotate water every 6–12 months
One more pro tip: for 55-gallon barrels, choose a “tight head” design with a permanent cover and two capped openings. Removable-lid barrels invite contamination and are harder to seal properly.
References & Sources
- CDC. “How to Create and Store an Emergency Water Supply.” Sourcing food-grade container guidance and bleach disinfection dosing.
- Utah Department of Environmental Quality. “Emergency Water Storage.” Detailing container material safety, weight limits, and storage conditions.
Mo Maruf
I created WellFizz to bridge the gap between vague wellness advice and actionable solutions. My mission is simple: to decode the research and give you practical tools you can actually use.
Beyond the data, I am a passionate traveler. I believe that stepping away from the screen to explore new environments is essential for mental clarity and physical vitality.