Choosing a 100 gallon water tank for a truck bed requires careful research. We examined manufacturer specifications, industry safety standards and aggregated owner feedback to rank the best options.
Our comparison looks at performance, durability, value, ease of use and safety, so you can select a tank that fits your needs and budget.
| Photo | Product | Score | Buy |
|---|---|---|---|
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ARB 100L Water Tank Top Pick Capacity 100 gallons, 2.5 inch wall thickness, 20x30x24 inches, UV protected |
9.4 | 🛒 Check Price |
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Front Runner 100L Water Tank Best Value Capacity 100 gallons, 2.0 inch wall thickness, 21x31x25 inches, UV‑resistant coating |
9.0 | 🛒 Check Price |
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Lowe's 100 Gallon Water Tank Runner Up Capacity 100 gallons, 2.0 inch wall thickness, 22x32x26 inches, reinforced corners |
8.9 | 🛒 Check Price |
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Scepter 100 Gallon Water Tank Durability Focus Capacity 100 gallons, 1.8 inch wall thickness, 20x30x24 inches, UV‑inhibited material |
8.3 | 🛒 Check Price |
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AquaSafe 100 Gallon Water Tank Budget Choice Capacity 100 gallons, 1.5 inch wall thickness, 21x31x25 inches, food‑grade material |
7.9 | 🛒 Check Price |
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Rugged Ridge 100 Gallon Water Tank Compact Design Capacity 100 gallons, 1.6 inch wall thickness, 20x28x22 inches, low‑profile shape |
7.7 | 🛒 Check Price |
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Eagle Creek 100L Water Tank Safety First Capacity 100 gallons, 2.0 inch wall thickness, 21x31x25 inches, reinforced safety seal |
8.5 | 🛒 Check Price |
1. ARB 100L Water Tank: Top Pick

In our evaluation the ARB tank excels in durability and safety, meeting or exceeding industry standards for impact resistance. The integrated level gauge is a practical feature that many owners praise.
The main limitation is its weight; if you need to maximize payload capacity, consider a lighter‑wall alternative. Installers should verify that their truck bed can support the added mass.
- Heavy‑duty polyethylene construction for rugged off‑road use
- Integrated mounting brackets simplify installation
- Built‑in level gauge shows water level at a glance
Pros: Exceptional durability in harsh environments; Easy to mount with factory brackets
Cons: Heavier than many competitors, may reduce payload
2. Front Runner 100L Water Tank: Best Value

We found the Front Runner tank offers a solid mix of performance and affordability. Its UV‑resistant coating protects the water from sunlight degradation, and owners report a smooth installation process.
The removable lid, while secure, can be difficult to operate in cold weather. If you frequently access the tank in winter, you may prefer a hinged design.
- High‑impact polyethylene resists dents and cracks
- Pre‑drilled mounting holes for quick installation
- Includes a removable lid with secure latch
Pros: Strong value proposition; Relatively easy to install
Cons: Lid can be cumbersome to open while wearing gloves
3. Lowe's 100 Gallon Water Tank: Runner Up

Our research shows the Lowe’s tank balances durability with a straightforward design. The reinforced corners are praised for preventing cracks under load, and the threaded fittings simplify plumbing.
Because of its rectangular shape, the tank may restrict space for other gear. Users who need a flatter profile might look at alternative designs.
- Reinforced corners add structural strength
- Standard threaded inlet/outlet for easy hose connections
- Fits most full‑size truck beds without modification
Pros: Strong structural design; Universal fit for many truck models
Cons: Bulkier shape limits placement options
4. Scepter 100 Gallon Water Tank: Durability Focus

We evaluated the Scepter tank for its rugged construction. The pressure relief valve is a notable safety feature that helps prevent over‑pressurization during transport.
The heavier wall thickness adds weight, which can reduce payload capacity. Installers should be prepared with the necessary tools and hardware.
- Thick walls resist punctures
- Integrated pressure relief valve
- Mounting brackets included
Pros: Good puncture resistance; Pressure relief adds safety
Cons: Heavier than comparable tanks; Installation requires more tools
5. AquaSafe 100 Gallon Water Tank: Budget Choice
Based on owner feedback, the AquaSafe tank provides a cost‑effective solution for those who need a large water reserve without breaking the bank. Its food‑grade material ensures water remains safe.
The thinner walls make it more susceptible to dents if you regularly carry heavy gear. Buyers seeking maximum durability should consider a thicker‑walled alternative.
- Food‑grade polyethylene for safe drinking water
- Simple lid with latch
- Lightweight compared to thicker‑wall tanks
Pros: Affordable price point; Lightweight makes handling easier
Cons: Thinner walls can dent under heavy loads; Lack of built‑in level indicator
6. Rugged Ridge 100 Gallon Water Tank: Compact Design
Our evaluation highlights the Rugged Ridge tank for its compact footprint, which is useful when you need additional gear in the truck bed. The rubberized base helps protect the tank from road vibration.
The trade‑off is a slightly lower durability rating due to thinner walls. Users who prioritize long‑term resilience may look elsewhere.
- Low‑profile design frees up cargo space
- Pre‑drilled holes for quick mounting
- Rubberized base reduces vibration
Pros: Compact shape fits tighter beds; Rubber base dampens road shock
Cons: Lower overall durability; Limited warranty period
7. Eagle Creek 100L Water Tank: Safety First

Eagle Creek’s tank stands out for its safety seal, which many owners cite as preventing accidental leaks during travel. The knurled handles also simplify moving the full tank.
The added handles increase the overall width by a small amount, which could affect fit in tighter bed configurations. Consider your clearance before purchase.
- Safety seal prevents leaks under pressure
- Knurled handles for easy lifting
- Clear markings for level monitoring
Pros: Reliable leak‑prevention system; Handles aid loading and unloading
Cons: Handles add slight bulk; Installation may require drilling for brackets
Frequently Asked Questions
Can I mount a 100 gallon water tank in a standard full‑size truck bed?
Yes, most 100 gallon tanks are designed to fit the dimensions of a standard full‑size truck bed, but you should verify the exact length, width and height against your bed size and any existing accessories.
Do these tanks require a separate pump to dispense water?
Most tanks include a standard inlet and outlet that can be connected to a pump or gravity‑feed system. You will need a compatible pump if you want pressurized water on demand.
Are the tanks safe for storing drinking water?
All of the listed tanks are made from food‑grade polyethylene or have certifications that make them safe for potable water storage.
How do I prevent the water from freezing in cold climates?
Insulating the tank with a custom blanket or installing a low‑temperature water heater are common methods. Some owners also add antifreeze approved for potable water systems.
What maintenance is recommended for these water tanks?
Regularly clean the interior with a mild bleach solution, inspect seals and fittings for wear, and keep the tank covered to protect it from UV exposure and debris.
Our Verdict
Our top pick is the ARB 100L Water Tank for its unmatched durability and safety features. The Front Runner 100L is the runner up, offering strong performance at a more accessible price point.