Finding the best water tank systems for vans involves balancing capacity, durability, and ease of installation. The 30 Gallon RV Fresh/Gray Water Tank stands out for its versatility and BPA-free design, making it a reliable choice for many van conversions. The TORVA 33-Gallon Wheel Well Tank offers a perfect fit for Sprinter, Transit, and ProMaster vans, especially when space is tight. However, larger tanks like the 75-Gallon RV Water Tank with Pump provide more capacity but may require more complex installation. The main tradeoff is between capacity and ease of setup, which varies based on your specific van and needs. Continue reading for a detailed breakdown of each system and what fits best for your van build.
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Key Takeaways
- Capacity varies widely, with options from 33 to 75 gallons, impacting installation complexity and weight.
- Wheel well tanks like TORVA are ideal for maximizing space in specific van models, offering a snug fit.
- Larger tanks with integrated pumps simplify plumbing but add to upfront costs and complexity.
- BPA-free materials are common in higher-quality tanks, promoting safer water storage.
- Choosing between standard and non-standard sizes depends on your van’s dimensions and your water needs.
| 30 Gallon RV Fresh/Gray Water Tank 34″ x 18″ x 12″ – BPA Free |  | Best Overall Water Tank System for Versatility and Durability | Capacity: 30 gallons | Dimensions: 34″ x 18″ x 12″ | Material: Polyethylene | VIEW LATEST PRICE | See Our Full Breakdown |
| TORVA 33-Gallon Non-Standard RV Wheel Well Fresh Water Storage Tank for Sprinter, Transit, and ProMaster Vans |  | Best Fit for Van Conversions with Space Maximization | Capacity: 33 gallons | Material: High-quality LLDPE | Finish: Matte | VIEW LATEST PRICE | See Our Full Breakdown |
| T7500BPK-P RV Fresh Water Tank, 75 Gallon with Pump & Plumbing Kit |  | Best for Large Capacity and Ready-to-Use Setup | Capacity: 75 gallons | Dimensions: 50.5 x 17.5 x 19.5 inches | Material: Medium density polyethylene | VIEW LATEST PRICE | See Our Full Breakdown |
| T3500BPK-P RV Fresh Water Tank, 35 Gallon, with Pump & Plumbing Kit |  | Best Compact Tank for Small RVs and Tiny Homes | Capacity: 35 gallons | Dimensions: 38.5 x 12 x 17.25 inches | Material: Medium density polyethylene | VIEW LATEST PRICE | See Our Full Breakdown |
| RV Fresh Water Tank for Sprinter 2500 & Transit Vans, 33-Gallon Capacity |  | Best Custom Fit for Compact Van Spaces | Capacity: 33 gallons | Material: BPA-free, food-grade LLDPE | Ports: 1 pre-drilled 1-1/2″ NPT, 4 customizable 1/2″ NPT | VIEW LATEST PRICE | See Our Full Breakdown |
| TORVA Sprinter 2500 & Transit 33-Gallon Non-Standard RV Wheel Well Water Tank |  | Best Space-Optimizing Design for Sprinter and Transit Vans | Capacity: 33 gallons | Material: BPA-free linear low-density polyethylene (LLDPE) | Ports: 4 x 1-1/2″ NPT, 4 x 1/2″ NPT (requires drilling) | VIEW LATEST PRICE | See Our Full Breakdown |
| water tank systems for van | Capacity | Material | Dimensions | Ports |
|---|---|---|---|---|
| 30 Gallon RV Fresh/Gray Water | 30 gallons | Polyethylene | 34" x 18" x 12" | — |
| TORVA 33-Gallon Non-Standard R | 33 gallons | High-quality LLDPE | — | 4 × 1-1/2" and 4 × 1/2" NPT |
| T7500BPK-P RV Fresh Water Tank | 75 gallons | Medium density polyethylene | 50.5 x 17.5 x 19.5 inches | — |
| T3500BPK-P RV Fresh Water Tank | 35 gallons | Medium density polyethylene | 38.5 x 12 x 17.25 inches | — |
| RV Fresh Water Tank for Sprint | 33 gallons | BPA-free, food-grade LLDPE | — | 1 pre-drilled 1-1/2" NPT, 4 customizable 1/2" NPT |
| TORVA Sprinter 2500 & Transit | 33 gallons | BPA-free linear low-density polyethylene (LLDPE) | — | 4 x 1-1/2" NPT, 4 x 1/2" NPT (requires drilling) |
More Details on Our Top Picks
30 Gallon RV Fresh/Gray Water Tank 34″ x 18″ x 12″ – BPA Free
This 30-gallon polyethylene tank stands out for its seamless construction, which significantly reduces leak risks compared to the segmented designs of smaller tanks like the T3500BPK-P. Its corrosion and rust resistance make it suitable for long-term use in diverse environments, from RVs to marine settings. However, being non-pressurized, it requires venting and may need additional fittings to ensure proper operation. Unlike the impact-resistant, custom-fit tanks designed for specific van models, this universal tank offers broad compatibility but lacks the precise fit for certain vehicle contours. It’s ideal for those prioritizing durability and universal fit, with the tradeoff being less convenience in installation and potential venting needs.
Pros:- Durable and resistant to corrosion and rust
- Seamless construction reduces the risk of leaks
- Includes multiple fittings for versatile installation
Cons:- Requires venting due to non-pressurized design
- Fittings may need additional sealing
Best for: RVers or boat owners seeking a durable, versatile tank for various applications with a focus on longevity.
Not ideal for: Van converters or travelers who need a compact, precisely fitted tank for limited space or specific vehicle models.
- Capacity:30 gallons
- Dimensions:34″ x 18″ x 12″
- Material:Polyethylene
- Inlet:1.25″ water fill inlet
- Connections:3 x 3/8″ NPT
- Pressurized:No
- Vented:Yes
Our verdict“This tank is best for users needing a robust, long-lasting solution that can handle multiple environments, accepting some installation adjustments.”
TORVA 33-Gallon Non-Standard RV Wheel Well Fresh Water Storage Tank for Sprinter, Transit, and ProMaster Vans
This 33-gallon tank is designed specifically to fit over the wheel well in popular van models like Sprinter, Transit, and ProMaster, making it a standout choice for maximizing limited space. Its impact-resistant LLDPE construction ensures durability off-grid, and with multiple ports, it offers flexible plumbing options that are more adaptable than larger, bulkier tanks like the 75-gallon T7500BPK-P. Compared to the 30-gallon generic tank, the TORVA model’s custom fit reduces the need for complex mounting or custom modifications, simplifying installation. However, it cannot be pressurized or hung with straps, requiring careful handling and rinsing before use. This makes it ideal for van owners prioritizing space efficiency and impact resistance, with the tradeoff being less versatility for non-standard configurations.
Pros:- Custom-fit for popular van models, maximizing space
- Impact-resistant, durable construction
- Flexible port options for versatile plumbing
- BPA-free and food-grade for safe drinking water
Cons:- Cannot be pressurized or hung with straps
- Requires rinsing and annual cleaning
- Filter needed for drinking water
Best for: Van owners seeking a space-efficient, impact-resistant tank tailored for specific models like Sprinter or Transit.
Not ideal for: Those needing a pressurized system or extensive plumbing flexibility, as the tank cannot be pressurized or hung with straps.
- Capacity:33 gallons
- Material:High-quality LLDPE
- Finish:Matte
- Ports:4 × 1-1/2″ and 4 × 1/2″ NPT
- Fits:Sprinter, Transit, ProMaster
Our verdict“This tank suits van owners who need a space-saving, impact-resistant solution tailored to their vehicle model, accepting some handling precautions.”
T7500BPK-P RV Fresh Water Tank, 75 Gallon with Pump & Plumbing Kit
The 75-gallon T7500BPK-P combines large capacity with included plumbing components and a 12V pump, making it ideal for full-time RVers or those with high water demands. Its NSF-certified, food-grade polyethylene ensures safe potable water, and the thicker walls provide added durability over OEM tanks. When compared to smaller tanks like the T3500BPK-P, this model offers significantly more capacity, reducing the need for frequent refills. However, it does not come with mounting hardware or fittings, and since it’s not designed to be pressurized or hung, installation requires extra planning. This makes it perfect for users who want a ready-to-use, high-capacity tank but are prepared for some additional setup effort.
Pros:- Large 75-gallon capacity reduces refilling frequency
- NSF-certified, food-grade materials for safety
- Includes a 12V pump and plumbing kit for quick setup
- Made in the USA with thicker walls for durability
Cons:- No mounting hardware or fittings included
- Requires extra effort for installation
- Should not be pressurized or hung by straps
Best for: Large RV owners or full-time travelers needing substantial water storage with minimal setup fuss.
Not ideal for: Temporary campers or those with limited space who prefer lightweight, smaller tanks, as this one is sizable and heavy.
- Capacity:75 gallons
- Dimensions:50.5 x 17.5 x 19.5 inches
- Material:Medium density polyethylene
- Tank Thickness:7/32 inch
- Connection Ports:Two 1.5-inch, Two 0.5-inch NPT
Our verdict“Ideal for high-capacity water needs, especially in larger RVs, with the caveat of needing additional installation components.”
T3500BPK-P RV Fresh Water Tank, 35 Gallon, with Pump & Plumbing Kit
The 35-gallon T3500BPK-P offers a compact, durable solution for smaller RVs or tiny houses, with the benefit of included plumbing and a 12V pump for easy installation. Its NSF-certified, food-grade construction in the USA provides peace of mind around water safety, and the thicker walls add impact resistance compared to OEM tanks. When compared to larger tanks like the 75-gallon T7500BPK-P, this model’s smaller size makes it easier to install in tight spaces, but it provides less capacity for extended use. The absence of mounting hardware or additional fittings means some extra setup work is needed, and it should not be pressurized or hung with straps, similar to the larger models. This tank is best for those prioritizing space efficiency and safety in smaller setups.
Pros:- Made from NSF-certified, food-grade materials in the USA
- Includes pump and plumbing kit for straightforward installation
- Thicker, impact-resistant walls for durability
- Compact size fits small spaces
Cons:- Does not include mounting hardware or fittings
- Limited capacity for high water demand
- Should not be pressurized or hung by straps
Best for: Small RV owners or tiny house dwellers needing a reliable, space-efficient water tank with easy setup.
Not ideal for: Users with high water demands or large families, as the capacity may require frequent refills.
- Capacity:35 gallons
- Dimensions:38.5 x 12 x 17.25 inches
- Material:Medium density polyethylene
- Connection ports:Four (two 1.5″ and two 0.5″ NPT)
- Tank thickness:0.219 inches
Our verdict“A reliable, space-saving tank ideal for small RVs or tiny homes, with moderate capacity and straightforward setup.”
RV Fresh Water Tank for Sprinter 2500 & Transit Vans, 33-Gallon Capacity
This 33-gallon tank is designed specifically for Sprinter 2500, Transit, and lifted ProMaster vans, offering a tailored fit that maximizes space utilization in compact van conversions. Its BPA-free, food-grade LLDPE construction guarantees safe drinking water, and the pre-drilled port simplifies installation. Compared with generic tanks like the 30-gallon B07KGK5SPK, this model’s custom fit reduces installation time and minimizes interference with vehicle components. However, it cannot be pressurized or hung with straps, requiring careful handling during setup. Its flexible port options allow for adaptable plumbing configurations, making it ideal for van owners who prioritize a perfect fit and safety, accepting some installation nuances.
Pros:- Custom-fit for specific van models, optimizing space
- Large 33-gallon capacity suitable for families
- Made from BPA-free, food-grade materials
- Flexible port options for easy plumbing
Cons:- Do not pressurize or hang the tank
- Requires rinsing before use and annual cleaning
- Filter needed for drinking water
Best for: Van owners needing a high-capacity, custom-fit water tank for space-efficient, safe water storage.
Not ideal for: People seeking a larger, more universal tank or those planning to use pressurized systems, as this tank is non-pressurized and model-specific.
- Capacity:33 gallons
- Material:BPA-free, food-grade LLDPE
- Ports:1 pre-drilled 1-1/2″ NPT, 4 customizable 1/2″ NPT
- Application:Fits Sprinter 2500, Transit, ProMaster vans
Our verdict“This tank is ideal for van owners who want a tailored, space-efficient water solution with safety and capacity in mind, with some handling considerations.”
TORVA Sprinter 2500 & Transit 33-Gallon Non-Standard RV Wheel Well Water Tank
This water tank stands out for its tailored fit over the wheel well of Sprinter 2500 and Ford Transit vans, making it an excellent choice for maximizing available space. Compared with larger, more generic tanks like the T7500BPK-P 75-gallon model, this 33-gallon tank excels in tight environments where space efficiency is critical. Its design allows installation on either side of the vehicle, offering flexibility often missing in standard tanks. However, it requires elevation of 3.5 inches for proper fit, which may complicate installation, and some ports need drilling—adding to setup time. The BPA-free, food-grade material ensures safe water storage, making this ideal for those prioritizing durability and safety in a confined space. Its multiple ports enable versatile plumbing, but the need for venting and proper installation considerations are tradeoffs to keep in mind.
Pros:- Optimizes space over wheel well for additional storage
- Custom designed for Sprinter 2500 and Transit vans
- Made from durable, BPA-free food-grade material
- Flexible port configuration for versatile plumbing
Cons:- Requires elevation of 3.5 inches for proper fit
- Ports may require drilling, adding installation complexity
- Needs venting to avoid pressurization issues
Best for: Van owners with Sprinter 2500 or Transit models who need to optimize limited space without sacrificing capacity.
Not ideal for: Buyers seeking a larger capacity tank or a straightforward installation process—they may find this model too specialized or complex.
- Capacity:33 gallons
- Material:BPA-free linear low-density polyethylene (LLDPE)
- Ports:4 x 1-1/2″ NPT, 4 x 1/2″ NPT (requires drilling)
- Installation Height:Elevated 3.5 inches
- Finish:Matte
Our verdict“This tank is best suited for van owners prioritizing space efficiency over simplicity and larger capacity.”
How We Picked
I evaluated these water tank systems based on several key factors that matter most for van owners: capacity, build quality, ease of installation, compatibility with different van models, and value for money. I prioritized tanks that offer a good balance of durability and user-friendly features, such as integrated pumps or pre-installed plumbing. The ranking reflects how well each system meets these criteria, with particular attention to common challenges like space constraints and maintenance. Products that excel in one area but fall short in others were rated accordingly, ensuring that each option serves a specific need or use case.| water tank systems for van | Material |
|---|---|
| 30 Gallon RV Fresh/Gray Water | Polyethylene |
| TORVA 33-Gallon Non-Standard R | High-quality LLDPE |
| T7500BPK-P RV Fresh Water Tank | Medium density polyethylene |
| T3500BPK-P RV Fresh Water Tank | Medium density polyethylene |
| RV Fresh Water Tank for Sprint | BPA-free, food-grade LLDPE |
| TORVA Sprinter 2500 & Transit | BPA-free linear low-density polyethylene (LLDPE) |
Factors to Consider When Choosing Best Water Tank Systems For Vans
Choosing the right water tank system for a van requires understanding several critical factors. Beyond capacity, consider installation ease, compatibility with your van model, material safety, and overall value. Being aware of common pitfalls, such as underestimating space or neglecting material quality, helps prevent costly mistakes. A well-chosen tank not only fits your current setup but also offers room for future upgrades or changes in water needs.Capacity and Water Needs
Determining the right capacity depends on your travel style and water usage. Smaller tanks around 30-40 gallons suit short trips or minimal use, while larger tanks up to 75 gallons are better for extended stays or full-time van life. Remember, larger tanks add weight and require more space, which can complicate installation. Balancing capacity with your vehicle’s payload and available space is critical to avoid overloading or cramped setups.
Compatibility and Fit
Many vans have specific dimensions or wheel well configurations that dictate tank choices. Non-standard sizes or custom-fit tanks like those from TORVA are designed to maximize space efficiency, especially in Sprinter, Transit, and ProMaster vans. Always measure your available space carefully and consider tanks that are designed for your vehicle model to prevent installation headaches or the need for modifications.
Material Safety and Durability
Look for BPA-free plastics or other food-grade materials to ensure safe water storage. Durability is equally important, especially if you plan to travel rough terrains. Tanks with reinforced walls or thicker material tend to last longer and resist cracking or damage. Pay attention to reviews on build quality to avoid tanks that degrade or leak prematurely.
Ease of Installation and Maintenance
Some tanks come with pre-installed plumbing, pumps, or quick-connect fittings, which can significantly reduce setup time. Consider whether you will install the tank yourself or hire a professional. Easy-to-access fill ports and drain valves are also valuable features for routine maintenance. Keep in mind that larger or more complex systems might require additional plumbing skills or tools.
Value and Long-Term Costs
Higher upfront costs may be justified by better materials, easier installation, or added features like integrated pumps. On the other hand, cheaper tanks might save money initially but could require replacement sooner. Factor in potential maintenance costs and the availability of replacement parts when choosing a system, ensuring your investment remains worthwhile over time.
Frequently Asked Questions
How do I choose the right capacity for my van’s water tank?
Assess your typical water usage and trip length. For short trips, a tank around 30-40 gallons may suffice, while longer excursions or full-time living might demand 60-75 gallons. Consider your vehicle’s payload capacity because a larger tank adds weight. Balancing capacity with available space and your water needs will ensure you select a tank that’s both practical and sustainable for your travels.
Are wheel well tanks a good choice for my van?
Wheel well tanks are excellent for maximizing space, especially in vans like Sprinter or Transit, where space is at a premium. They fit into existing contours, freeing up interior space and avoiding the need for custom mounting. However, they may limit access to wheel well areas for other purposes and sometimes require precise measurements. If your van model aligns with these tanks, they offer a convenient, space-efficient solution.
What materials should I look for in a safe water tank?
Prioritize BPA-free plastics or food-grade materials that do not leach chemicals into your water supply. These materials are safer for drinking water and generally more durable against UV exposure and temperature fluctuations. Avoid tanks made from low-quality plastics that can crack or degrade quickly, especially if you plan to travel in rough terrain or expose the tank to sunlight regularly.
Is it better to buy a tank with a pump included?
A tank with an integrated pump simplifies plumbing and reduces setup time, making it a good choice for those new to van conversions. It also ensures water pressure consistency for your fixtures. However, these systems tend to be more expensive upfront and may be more complex to repair if issues arise. If you prefer a modular approach or want to upgrade components later, a basic tank with separate pump options might work better.
How important is ease of installation when choosing a water tank?
Ease of installation is a key factor, especially for DIY van builders. Tanks designed with pre-drilled holes, quick-connect fittings, or modular parts can save time and reduce frustration. Complex systems requiring custom plumbing or structural modifications may increase costs and installation time. Consider your skill level and available tools to ensure you select a tank that aligns with your capabilities and prevents future headaches.
Conclusion
For most van owners, the 30 Gallon RV Fresh/Gray Water Tank offers a reliable balance of size, safety, and ease of use, making it ideal for casual travelers and beginners. Those seeking maximum capacity and a streamlined setup should consider the 75 Gallon RV Water Tank with Pump, especially for extended trips. If space is tight or you want a seamless fit, wheel well tanks like TORVA provide a smart, space-efficient solution. For budget-conscious buyers, smaller tanks or basic models deliver value without sacrificing essential features. Finally, if convenience and long-term durability are priorities, investing in a system with integrated pump and plumbing may justify the higher cost for seasoned vanlifers or full-timers.
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