When searching for an extracapacity waste holding tank, the goal is to find a solution that offers large volume without sacrificing ease of use or portability. The Camco Rhino 36-Gallon RV Tote Tank stands out as the best overall pick for its balance of size and durability. The RecPro 36-Gallon Waste Tank is a strong alternative for those prioritizing heavy-duty construction, while the Camco Rhino 28-Gallon Tote offers a slightly smaller but more maneuverable option. Buyers face tradeoffs between capacity, mobility, and price, so understanding these factors is key. Continue reading for a detailed breakdown of each option to help you choose the best fit for your needs.
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Key Takeaways
- The highest capacity tanks generally offer more volume but tend to be heavier and less portable.
- Heavy-duty wheels and built-in gate valves significantly improve ease of use and maintenance.
- Size and weight are the biggest tradeoffs—larger tanks are less convenient to handle for most users.
- Durability and material quality vary, impacting longevity and resistance to leaks or damage.
- Price often correlates with capacity and features, so consider your budget against your specific needs.
| Camco Rhino 21-Gallon RV Portable Waste Tank |  | Best Overall for Balance of Capacity and Portability | Capacity: 21 gallons | Dimensions: 20 1/8″ (L) x 12 1/2″ (W) x 40″ (H) | Weight: 34.5 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| Camco Rhino 28-Gallon Camper/RV Tote Tank with Heavy-Duty No-Flat Wheels and Built-in Gate Valve |  | Best for Higher Capacity with Built-in Drain | Capacity: 28 gallons | Dimensions: 14.5″ L x 24″ W x 44″ H | Weight: 43 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| SmartTote2 Portable RV Waste Tote Tank – 12 Gallon, 2 Wheels |  | Best for Compact and Lightweight Convenience | Capacity: 12 gallons | Wheels: 2 | Includes: Caps for hose opening and vent | VIEW ON AMAZON | See Our Full Breakdown |
| RecPro RV Portable Waste Tank | 36 Gallon | Blue | No-Flat Tires |  | Best for Large Capacity and Rugged Terrain | Capacity: 36 gallons | Color: Blue | Construction: Heavy-duty polypropylene | VIEW ON AMAZON | See Our Full Breakdown |
| Camco Rhino 36-Gallon RV Tote Tank with Heavy-Duty No-Flat Wheels and Built-in Gate Valve | | Best for High Capacity and Ease of Emptying | Capacity: 36 gallons | Dimensions: 24 1/8″ (L) x 14 3/4″ (W) x 44 7/8″ (H) | Weight: 45 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| Camco Rhino 15-Gallon Portable RV Tote Tank | | Best Compact Capacity for Easy Transport and Storage | Capacity: 15 gallons | Dimensions: 20 1/8″ L x 12 1/2″ W x 32 1/8″ H | Weight: 31.5 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| 30 Gallon RV Portable Waste Tank with 4 Wheels and Accessories |  | Best for Extended Use and Larger Capacity Needs | Capacity: 30 gallons | Dimensions: 50″ L x 25″ W x 20″ H | Weight: 66 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| extracapacity waste holding tank | Capacity | Dimensions | Weight | Material |
|---|---|---|---|---|
| Camco Rhino 21-Gallon RV Porta | 21 gallons | 20 1/8" (L) x 12 1/2" (W) x 40" (H) | 34.5 lbs | UV-stabilized blow-molded HDPE |
| Camco Rhino 28-Gallon Camper/R | 28 gallons | 14.5" L x 24" W x 44" H | 43 lbs | UV-stabilized HDPE |
| SmartTote2 Portable RV Waste T | 12 gallons | — | — | — |
| RecPro RV Portable Waste Tank | 36 gallons | — | — | — |
| Camco Rhino 36-Gallon RV Tote | 36 gallons | 24 1/8" (L) x 14 3/4" (W) x 44 7/8" (H) | 45 lbs | UV-stabilized HDPE |
| Camco Rhino 15-Gallon Portable | 15 gallons | 20 1/8" L x 12 1/2" W x 32 1/8" H | 31.5 lbs | UV-stabilized HDPE |
| 30 Gallon RV Portable Waste Ta | 30 gallons | 50" L x 25" W x 20" H | 66 lbs | HDPE |
More Details on Our Top Picks
Camco Rhino 21-Gallon RV Portable Waste Tank
The Camco Rhino 21-Gallon RV Portable Waste Tank stands out for its balanced capacity and ease of handling, making it an excellent choice for most RV travelers. Compared to larger tanks like the 36-gallon models, this tank offers enough volume for extended trips without becoming overly cumbersome. Its heavy-duty no-flat wheels ensure mobility over rough terrain, while the included accessories streamline waste disposal. However, at 34.5 lbs, it can still be heavy for some users to lift, especially when full. Its durable construction in the USA adds peace of mind, but cleaning can require extra effort despite the tank rinser. This tank suits RV owners seeking a reliable, all-terrain option that balances capacity with manageable size.
Pros:- Large heavy-duty no-flat wheels for all-terrain mobility
- Includes comprehensive accessories for easy waste disposal
- Durable construction made in the USA
Cons:- Relatively heavy at 34.5 lbs, may be cumbersome to handle
- Requires storage space when not in use
- Tank cleaning may need additional effort despite the rinser
Best for: RV travelers who need a versatile tank with good capacity and mobility, balanced for frequent use.
Not ideal for: Small RV owners or campers with limited storage space, due to its size and weight.
- Capacity:21 gallons
- Dimensions:20 1/8″ (L) x 12 1/2″ (W) x 40″ (H)
- Weight:34.5 lbs
- Material:UV-stabilized blow-molded HDPE
Our verdict“This pick is ideal for RV owners who want a reliable, portable tank that balances capacity with ease of movement.”
Camco Rhino 28-Gallon Camper/RV Tote Tank with Heavy-Duty No-Flat Wheels and Built-in Gate Valve
Compared with the 21-gallon Rhino, this 28-gallon Camco Rhino offers increased waste capacity, making it better suited for longer trips or larger groups. Its built-in gate valve simplifies emptying, reducing mess and handling effort. The large no-flat wheels and oversized handle make maneuvering easier, though the overall weight of 43 lbs can be challenging for some users. Made from UV-stabilized HDPE, it withstands outdoor conditions well, and the included sewer hose and rinser add convenience. The main tradeoff is its size—while larger, it requires more storage space and effort to handle when full. This tank is ideal for RVers prioritizing capacity and easy waste management on extended trips.
Pros:- Large capacity for extended use
- Built-in gate valve for hassle-free emptying
- Durable UV-stabilized construction with included accessories
Cons:- Heavy weight of 43 lbs can be difficult to lift
- Size may be cumbersome for small storage compartments
- Manual handling required for transport when full
Best for: RV owners needing a large capacity tank with built-in drainage for easier waste disposal.
Not ideal for: Campers with limited storage or those seeking a lightweight, compact solution.
- Capacity:28 gallons
- Dimensions:14.5″ L x 24″ W x 44″ H
- Weight:43 lbs
- Material:UV-stabilized HDPE
Our verdict“This model makes the most sense for RVers who prioritize capacity and ease of waste disposal over portability.”
SmartTote2 Portable RV Waste Tote Tank – 12 Gallon, 2 Wheels
The SmartTote2 excels as a lightweight, compact solution for short trips or quick waste disposal needs. Its 12-gallon capacity is significantly smaller than other options like the 21- or 28-gallon models, but it’s much easier to maneuver and store, especially for solo travelers or those with limited storage. Fully assembled with caps for hose and vent, it offers straightforward operation. The main limitation is its capacity—this tank is best suited for occasional use or short trips, as larger waste loads require more frequent emptying. Notably, it does not include a hose, which adds to the initial setup effort. This makes the most sense for RVers who prioritize portability and ease of handling over volume.
Pros:- Lightweight and easy to maneuver
- Fully assembled for quick use
- Compact design for limited storage space
Cons:- Limited to 12-gallon capacity, requiring frequent emptying
- Does not include a hose, adding setup steps
- Less suitable for extended trips
Best for: Campers needing a lightweight, easy-to-transport waste tank for short-term use or emergency situations.
Not ideal for: Long-term RV travelers or those with high waste output, due to its limited capacity and lack of included hose.
- Capacity:12 gallons
- Wheels:2
- Includes:Caps for hose opening and vent
- Assembly:Fully assembled
Our verdict“This tank is best for RVers who need a portable, simple solution for short trips or emergencies.”
RecPro RV Portable Waste Tank | 36 Gallon | Blue | No-Flat Tires
The RecPro 36-Gallon Waste Tank offers a substantial capacity, ideal for longer trips or larger families. Its flat-free all-terrain tires make it highly reliable across rough camping sites, outperforming smaller tanks like the 21- or 28-gallon options when it comes to ruggedness. The large ports facilitate easy, mess-free emptying, and the heavy-duty polypropylene construction ensures durability. The main tradeoff, however, is its weight—at 45 lbs when full, it can be difficult to lift or maneuver. Its size also demands ample storage space. This tank is well-suited for those who prioritize capacity and rugged terrain handling but may not be ideal for tight storage spaces or solo travelers.
Pros:- Large ports for mess-free emptying
- Heavy-duty polypropylene construction
- Flat-free, all-terrain tires for reliable mobility
Cons:- Heavy weight of 45 lbs when full, difficult to lift
- Large size requires significant storage space
- Limited to waste management, no additional features
Best for: RVers who need high capacity and durable mobility on challenging terrains.
Not ideal for: Owners with limited storage or those seeking a lightweight, easy-to-handle tank for frequent small dumps.
- Capacity:36 gallons
- Color:Blue
- Construction:Heavy-duty polypropylene
- Tire Type:Flat-free, all-terrain
Our verdict“This tank fits RVers who need high capacity and rugged mobility, accepting the tradeoff of increased weight and size.”
Camco Rhino 36-Gallon RV Tote Tank with Heavy-Duty No-Flat Wheels and Built-in Gate Valve
Compared with the smaller 21- and 28-gallon models, the Camco Rhino 36-Gallon Tote Tank offers the highest capacity in this roundup, making it suitable for extended trips or heavy waste output. Its built-in gate valve simplifies the emptying process, reducing handling mess, and the heavy-duty no-flat wheels ensure reliable mobility across various terrains. Made from UV-stabilized HDPE, it’s designed to withstand outdoor conditions. The main drawback is its weight—at 45 lbs, lifting and maneuvering can be difficult, especially when full, and its large size demands ample storage space. This model is best for those prioritizing capacity and straightforward waste management over lightweight portability.
Pros:- Heavy-duty no-flat wheels for all-terrain mobility
- Built-in gate valve for effortless waste disposal
- UV-stabilized HDPE construction for outdoor durability
Cons:- Heavy weight of 45 lbs can be challenging to lift
- Large size may require significant storage space
- Limited to waste disposal, no extra features
Best for: RV owners seeking maximum capacity with easy disposal features for long-term or high-demand use.
Not ideal for: Travelers with limited storage or who prefer lightweight equipment for frequent, short-term trips.
- Capacity:36 gallons
- Dimensions:24 1/8″ (L) x 14 3/4″ (W) x 44 7/8″ (H)
- Weight:45 lbs
- Material:UV-stabilized HDPE
Our verdict“This tank is best for RVers who prioritize high capacity and convenient emptying, accepting the weight and size tradeoffs.”
Camco Rhino 15-Gallon Portable RV Tote Tank
The Camco Rhino 15-Gallon Portable RV Tote Tank excels for RV owners needing a manageable yet sizable waste solution. Its large no-flat wheels and UV-stabilized HDPE construction make it highly durable and easy to maneuver on rough terrain, especially compared to smaller tanks like the SmartTote2 12-Gallon. However, at 31.5 pounds when full, it can be somewhat heavy for single-handed transport, and it requires dedicated storage space when not in use. Unlike the larger 30-gallon tanks, this model is better suited for short trips or situations where space is limited but capacity still matters. The inclusion of a comprehensive accessory kit makes waste handling straightforward. Still, it’s limited strictly to waste disposal, not suitable for other liquids or extended use without frequent emptying.
Pros:- Large no-flat wheels for effortless movement across diverse terrains
- Constructed from UV-stabilized HDPE for outdoor durability
- Includes accessories that simplify waste disposal
Cons:- Heavy when fully loaded, making transport more challenging
- Requires dedicated storage space when not in use
- Limited to waste only, not suitable for other liquids
Best for: RV owners who need a balanced mix of capacity and maneuverability for frequent short trips
Not ideal for: Full-time RVers or those with very limited storage who prefer minimal bulk at 15 gallons
- Capacity:15 gallons
- Dimensions:20 1/8″ L x 12 1/2″ W x 32 1/8″ H
- Weight:31.5 lbs
- Material:UV-stabilized HDPE
Our verdict“This tank is ideal for RV owners who prioritize portability and moderate capacity in a durable design.”
30 Gallon RV Portable Waste Tank with 4 Wheels and Accessories
The 30 Gallon RV Portable Waste Tank stands out for users who need more capacity and easier maneuverability over longer distances. Its steerable front wheels and sizable rubber back wheels allow smoother transport compared to the smaller, less nimble Camco Rhino 15-Gallon. Weighing 66 pounds, it’s heavier but designed with durability and leak resistance in mind, making it suitable for extended stays or frequent dumpings far from sewer hookups. The included accessories facilitate cleaning and maintenance, but some assembly is required, and it may be cumbersome for less physically able users. While its capacity exceeds the 15-gallon model, it may be overkill for short trips and requires more storage space. Compared to smaller tanks, this is more suited for those with space and transportation capacity for larger equipment.
Pros:- Steerable front wheels and large rubber tires for smooth maneuvering
- Durable, leak-free, sun-resistant construction
- Includes comprehensive accessories for easy cleaning and maintenance
Cons:- Heavy at 66 lbs, potentially difficult to handle for some users
- Requires some assembly before use
- Limited to 30-gallon capacity, which might be excessive for short-term trips
Best for: Long-term RV travelers or those needing high capacity with easier transport over large distances
Not ideal for: Casual campers or RVers with limited storage who prefer lightweight, smaller tanks
- Capacity:30 gallons
- Dimensions:50″ L x 25″ W x 20″ H
- Weight:66 lbs
- Material:HDPE
Our verdict“This tank suits RV owners who need high capacity combined with mobility and durability for extended use.”
How We Picked
I evaluated these waste holding tanks based on capacity, build quality, ease of mobility, and features like wheels and gate valves. I prioritized tanks that strike a balance between large volume and practical handling, as these are crucial for users who need to manage significant waste without excessive difficulty. Products were ranked according to their overall usability, durability, and value for their capacity. I also considered customer reviews and manufacturer reputation to ensure reliability. This approach ensures that each pick addresses specific user needs while maintaining quality standards.| extracapacity waste holding tank | Material |
|---|---|
| Camco Rhino 21-Gallon RV Porta | UV-stabilized blow-molded HDPE |
| Camco Rhino 28-Gallon Camper/R | UV-stabilized HDPE |
| SmartTote2 Portable RV Waste T | — |
| RecPro RV Portable Waste Tank | — |
| Camco Rhino 36-Gallon RV Tote | UV-stabilized HDPE |
| Camco Rhino 15-Gallon Portable | UV-stabilized HDPE |
| 30 Gallon RV Portable Waste Ta | HDPE |
Factors to Consider When Choosing Extracapacity Waste Holding Tank
Choosing the right extracapacity waste holding tank requires considering several factors beyond just size. Capacity alone doesn’t determine ease of handling or suitability for your RV setup. Other key considerations include mobility features, material durability, and maintenance requirements. Making an informed decision involves balancing these factors to fit your specific use case, whether for frequent large dumps or occasional use.Capacity and Size
While larger tanks hold more waste and reduce the frequency of emptying, they also tend to be heavier and bulkier. Consider your RV’s storage space and your physical ability to handle a heavier unit. Smaller tanks are easier to maneuver but may require more frequent dumps—something to weigh against your typical usage pattern. Finding a balance between capacity and portability is essential to avoid frustration or inconvenience.
Mobility and Wheels
Wheels and handles are critical features for moving large tanks comfortably. Heavy-duty, no-flat tires and ergonomic handles make transportation easier, especially over uneven surfaces. Be wary of tanks with flimsy or small wheels that can struggle on rough terrain or become a hassle to move. Investing in tanks with sturdy wheels can save effort and reduce the risk of damage over time.
Build Quality and Material
Durability depends heavily on the material used—high-quality plastics resist cracks and leaks better. Cheaper options may be prone to damage, leading to costly repairs or replacements. Look for tanks with reinforced seams and sturdy construction, especially if you plan to use them frequently or in challenging conditions.
Ease of Maintenance and Features
Features like built-in gate valves and accessible drain ports simplify emptying and cleaning. Heavy-duty, leak-proof valves prevent spills during disposal. Consider how easy it is to connect hoses, drain, and rinse the tank. A well-designed tank minimizes mess and saves time, especially during regular maintenance routines.
Price and Value
While high-capacity tanks often cost more, they can offer better value if you need to minimize emptying frequency. However, premium features and materials come at a premium price, so determine what features are essential for your use. Budget options may suffice for occasional use, but investing in quality pays off for frequent or long-term RV travelers.
Frequently Asked Questions
How do I know if a large waste tank will be too heavy to handle?
Large waste tanks can be quite heavy when full, especially with water or waste inside. To gauge manageability, consider the tank’s empty weight and whether your physical strength or vehicle setup can comfortably handle it. Features like reinforced handles, wheels, and balanced weight distribution help make handling easier. If you frequently move the tank over uneven terrain or have limited strength, opt for models with robust wheels and lighter construction overall.
Are heavy-duty wheels worth the extra cost?
Absolutely. Heavy-duty wheels, especially no-flat types, significantly reduce effort during transport and decrease the risk of damage. They are especially valuable if you need to move the tank over rough or uneven surfaces. While they might add to the initial price, these wheels often extend the lifespan of the tank by preventing wear and tear from frequent handling. For regular use, investing in tanks with quality wheels yields noticeable convenience.
Can I use a smaller tank for a long-term RV trip?
Using a smaller tank for extended trips can lead to frequent dumping, which may be inconvenient and time-consuming. If space and weight are constraints, choose a tank that balances capacity with ease of handling. For longer trips, larger tanks reduce the number of emptying stops, but ensure your RV has adequate storage and that you can manage the weight comfortably. Planning for regular emptying is essential if you opt for a smaller tank.
What maintenance is required for these large waste tanks?
Regular cleaning and rinsing are vital to prevent odors and buildup. Many tanks feature drain ports and valves that make this process easier. Use appropriate cleaning solutions, and always rinse thoroughly after emptying. Check seals and valves periodically for leaks or wear, replacing parts if necessary. Proper maintenance extends the life of the tank and keeps it sanitary for future use.
Is it better to buy a tank with built-in gate valves or separate hoses?
Built-in gate valves provide a streamlined, leak-resistant option that simplifies the emptying process and reduces chances of spillage. They are especially helpful for users who want a quick, clean dump. However, some prefer separate hoses for more flexibility or replacement options. Overall, tanks with integrated gate valves tend to offer better durability and ease of use, making them a smart choice for most users.
Conclusion
For most RV owners, the Camco Rhino 36-Gallon RV Tote Tank offers a reliable balance of size, durability, and ease of handling, making it the best overall choice. Budget-conscious buyers or those with limited storage may prefer the Camco Rhino 15-Gallon Portable Waste Tank for its smaller size and affordability. Frequent travelers or those with more demanding needs should consider the RecPro 36-Gallon Waste Tank for its heavy-duty build. Beginners or casual users will benefit from models with simple features and manageable weight, whereas seasoned RVers focused on longevity might opt for premium options with reinforced construction and advanced wheels. Tailor your choice to your travel style, storage capacity, and handling preferences for the best experience.
