How Much Are Water Tanks?

By Nate Baker

If you’re preparing for emergencies, planning for drought, or setting up an off-grid property, one of the first questions you’ll ask is: how much do water tanks cost? The honest answer is: it depends on size, material, and features. Below is a simple guide to help you budget and choose the right water storage tank for your needs.

The emergency water storage tanks here fall within standard pricing ranges, but we offer the highest-quality plastic construction and the most convenient features. More on that later.

Typical Water Tank Prices by Size

30-Gallon Plastic Portable Water Tank

A compact option for garages, sheds, RVs, and basic emergency preparedness.

  • Typical price range: $100–$200.
  • Best for: small households, apartments, quick backup storage.

Check out our 30-gallon portable stackable tank.

55-Gallon Plastic Water Tank

A popular mid-size choice—enough water for meaningful emergency storage, while still manageable for many homes.

  • Typical price range: $150–$300.
  • Best for: families starting preparedness, garages/utility rooms.

Check out our 55-gallon stackable tank.

300-Gallon Plastic Doorway Water Tank

A high-capacity solution for households, farms, and facilities that want a serious water reserve.

  • Typical price range: $400–$900
  • Best for: emergency readiness, drought planning, livestock, and gardening.

Check out our 300-gallon doorway tank.

how much are water tanks explained by tank size

What Affects the Cost of a Water Tank?

  • Capacity: Larger tanks cost more upfront, but usually store more gallons per dollar.
  • Material and build quality: Stronger tanks typically last longer and resist cracking, especially at corners and edges.
  • Features Such as Spigots, stackability, food-grade material, and specialty designs can affect pricing.
  • Use case: Drinking water storage vs. agricultural, industrial, or chemical applications can influence the best tank choice.

Why Our Tanks Are Built for Emergency Water Storage

At Emergency Water Tanks, our products are made using rotationally molded plastic (also called rugged rotational molding). This creates a stronger, more uniform wall thickness—especially at edges and corners—than many common blow-molded alternatives.

  • No pump needed: Use the convenient bottom spigot to dispense water.
  • Food-grade options: Ideal for emergency household storage.
  • Stackable models: Save space and store efficiently.
  • Heavy-duty durability: Strong enough for demanding applications beyond just water storage.

Quick Price Snapshot

Tank Type Capacity Typical Price Range
Portable Plastic Tank 30 gallons $100–$200
Portable Plastic Tank 55 gallons $150–$300
Plastic Doorway Tank 300 gallons $400–$900

Final Thoughts

When shopping for a water tank, focus on the total value—not just the lowest price. A durable, food-grade tank with an easy-access spigot can make emergency storage simpler, safer, and more reliable.

Learn about how much water people need daily, here.

Other helpful resources:

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