WaterBrick Stackable Water Container -- Best for Small Spaces
WaterBricks are 3.5-gallon high-density polyethylene containers with an interlocking design that lets you stack them like building blocks, maximizing vertical space in a closet, garage, or under a bed. They are BPA-free, food-grade certified, and the seal prevents leaks even when stacked under weight. The flat sides prevent rolling, and the built-in handle makes them easy to carry and rotate. For apartment dwellers or anyone without a dedicated storage space, WaterBricks are the most practical solution available. A pack of four covers a two-person household for seven days.
Check price on Amazon →Long-term water storage requires food-grade, BPA-free containers built to hold water safely for years. We reviewed the top five options for emergency preparedness and off-grid use.
A power outage, natural disaster, or water main break can cut off your water supply without warning. Having a proper long-term storage setup is one of the most practical emergency preparations you can make. But not all containers are suitable. you need food-grade materials, opaque walls that block light-driven algae growth, and a design that stays stable for years. Here are the five best options.
| Product | Best For | Rating |
| — | — | — |
| WaterBrick Stackable Water Container | Apartment and small space storage | 4.8/5 |
| Reliance Products Aqua-Tainer | Portable emergency water | 4.7/5 |
| Emergency Essentials 55-Gallon Water Barrel | Large household supply | 4.8/5 |
| Augason Farms Water Storage Kit | Starter emergency kit | 4.6/5 |
| New Wave Enviro BPA-Free Water Bottle (5-gallon) | Budget bulk storage | 4.5/5 |
How we picked
We compare every pick against the field on real specifications, certifications, and aggregated owner reviews. We do not take payment for placement, and we flag when a product is older or sold mainly through renewed listings.
Top picks compared
| Pick | Best for | Score | |
|---|---|---|---|
| WaterBrick Stackable Water Container -- Best for Small Spaces | Check price | ||
| Reliance Products Aqua-Tainer -- Best Portable Emergency Water | Check price | ||
| Emergency Essentials 55-Gallon Water Barrel -- Best for Large Households | Check price | ||
| Augason Farms Water Storage Kit -- Best Starter Kit | Check price | ||
| New Wave Enviro BPA-Free 5-Gallon Water Bottle -- Best Budget Bulk Storage | Check price |
Our picks up close
WaterBrick Stackable Water Container -- Best for Small Spaces
WaterBricks are 3.5-gallon high-density polyethylene containers with an interlocking design that lets you stack them like building blocks, maximizing vertical space in a closet, garage, or under a bed. They are BPA-free, food-grade certified, and the seal prevents leaks even when stacked under weight. The flat sides prevent rolling, and the built-in handle makes them easy to carry and rotate. For apartment dwellers or anyone without a dedicated storage space, WaterBricks are the most practical solution available. A pack of four covers a two-person household for seven days.
Reliance Products Aqua-Tainer -- Best Portable Emergency Water
The Reliance Aqua-Tainer is the classic 7-gallon portable water container found in camp stores and emergency supply depots for decades. Made from FDA-approved polyethylene, it is BPA-free and has a built-in spout and vent for easy dispensing. The blue color blocks light to inhibit algae growth. It holds 7 gallons. Enough for one person for a week. And the recessed handle makes carrying manageable at full weight (about 58 pounds when full). Best used in pairs or sets for larger households. A reliable, affordable first container for anyone building an emergency water supply.
Emergency Essentials 55-Gallon Water Barrel -- Best for Large Households
For households serious about emergency preparedness or off-grid living, a 55-gallon barrel is the most storage-efficient solution per dollar. Emergency Essentials' barrel is food-grade BPA-free polyethylene with a sealed bung opening. It should be stored on a pallet or wooden platform (not directly on concrete, which can leach), filled once, treated with water preserver, and left in place. A hand pump or siphon is required to extract water. This is not a portable solution. Once full, it weighs 460 pounds and stays where it is. But for a family's month-plus water supply, nothing beats the value.
Augason Farms Water Storage Kit -- Best Starter Kit
Augason Farms packages a 30-gallon water storage kit with containers, a siphon pump, and water treatment tablets. It is an excellent starting point for anyone who wants to go from zero to a proper emergency supply in one purchase. The containers are food-grade, BPA-free, and designed for stackable storage. The included treatment tablets are enough for 30 gallons. For a household of two, this covers about two weeks at FEMA's recommended one gallon per day per person. An ideal gift for family members who keep putting off emergency preparedness.
New Wave Enviro BPA-Free 5-Gallon Water Bottle -- Best Budget Bulk Storage
The standard 5-gallon water cooler bottle, in its BPA-free food-grade form, is one of the most affordable long-term storage containers available. New Wave Enviro's version is made from HDPE plastic, is lightweight when empty (2.3 lbs), and holds the industry-standard 5-gallon size that fits most dispensing pumps. You can fill these from a tap, treat with preserver concentrate, and store upright in a cool, dark location. At per bottle, stocking up is inexpensive. The main limitation is that you need a pump or dispenser to use them efficiently.
Before you buy
What to consider
The two non-negotiable criteria are food-grade material and a tight seal. Look for containers labeled food-grade HDPE (high-density polyethylene) or BPA-free polycarbonate. Opaque or blue containers block light, which prevents algae growth over time. Consider your available space: stackable containers maximize small spaces, while large barrels are most efficient for dedicated storage rooms or garages. Always treat stored water with food-grade water preserver concentrate and rotate your supply every 6-12 months. Store away from direct sunlight, chemicals, and gasoline fumes, which can permeate thin plastic walls.
What to consider
For related emergency and outdoor storage topics, see our guide on the [best containers for moving](/articles/best-container-for-moving) and [best containers for long-term bulk food storage](/articles/best-container-for-bulk-food-storage). Visit our [methodology page](/methodology) for our full testing process.
Quick answers
Water stored in food-grade, opaque containers away from sunlight and heat can remain safe for 6 months to 5 years depending on treatment. Adding a water preserver concentrate extends storage to 5 years. Rotate your supply every 6-12 months for best practice. Never store water in containers that previously held non-food items, as chemical residues can leach into the water over time.
FEMA recommends storing at least one gallon of water per person per day, for at least three days. For a family of four over two weeks, that is 56 gallons minimum. Most emergency planners recommend targeting 30-day supplies. Larger rigid containers like 55-gallon barrels are efficient for bulk storage, while smaller stackable containers offer more flexibility for apartments and limited spaces.
