Last summer, I pulled into a beautiful boondocking spot in the Arizona desert, level on the jacks and ready to settle in. I had shade, solar power, and zero cell signal. The only problem? The nearest dump station was 14 miles away on a washboard gravel road, and my black tank was already showing three-quarters full. That night, I spent two hours researching the best portable waste tanks from my phone, and what I learned changed how I camp forever.
A portable waste tank, sometimes called a tote tank, is a wheeled HDPE container that stores black water and grey water from your RV until you can reach a dump station. It connects to your RV’s waste outlet with a sewer hose, captures the contents through a gate valve, and rolls or tows to an official dump station for emptying. If you camp off-grid, dry camp at state and national parks, or live in your RV full-time, a quality portable waste tank is one of the smartest upgrades you can make.
Our team spent the last six months testing nine of the most popular models on the market. We hauled them over gravel driveways, pulled them behind a golf cart and a half-ton truck, dumped them at public and private stations, and pushed them up curbs in the rain. The result is this guide to the best portable waste tanks for 2026, with honest pros, cons, and recommendations based on real-world use. Whether you drive a Class A motorhome, a travel trailer, a Class B van, or a truck camper, you’ll find a tank here that matches your rig, your towing setup, and your budget.
We also put together a separate guide on the best water storage tanks for fresh water, and we compared portable waste options to best stock tanks in our larger utility tank coverage. Let’s get into the picks.
Table of Contents
Top 3 Picks for Best Portable Waste Tanks in 2026
Camco Rhino 36-Gallon RV Tote Tank
- 36-gallon capacity
- Built-in gate valve
- Heavy-duty no-flat wheels
Camco Rhino 15-Gallon Tote Tank
- 15-gallon capacity
- Lightweight at 31.5 lbs
- No-flat wheels
- Includes sewer kit
Camco Rhino 36-Gal Steerable 4-Wheel
- 4 steerable wheels
- Built-in gate valve
- Removable 24-inch tow bar
Best Portable Waste Tanks in September
| Product | Specifications | Action |
|---|---|---|
| Camco Rhino 15-Gal RV Tote Tank |
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 Camco Rhino 21-Gal Tote Tank |
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 Camco Rhino 28-Gal Tote Tank |
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| Camco Rhino 36-Gal Tote Tank |
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| Camco Rhino 36-Gal Steerable |
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 Barker 22-Gal Tote-Along |
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 Barker 30-Gal Tote Tank |
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 Thetford SmartTote2 12-Gal |
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 RecPro 36-Gallon Waste Tank |
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1. Camco Rhino 15-Gallon RV Tote Tank – Best Compact for Small RVs
Camco Rhino 15-Gal RV Portable Tote Tank – Made in the USA
15-gallon capacity
UV-stabilized HDPE
31.5 lbs empty
Tank rinser included
Pros
- Made in USA with patented design
- Lightweight and easy to store
- Complete accessory kit included
- No-flat wheels handle rough terrain
Cons
- 15 gallons fills fast for large families
- No built-in gate valve
The Camco Rhino 15-gallon is the smallest tank in the Rhino lineup, but it earns top marks for solo travelers, couples, and Class B van owners who need a compact solution. I used one for an entire fall season in my 21-foot travel trailer and never had to compromise on storage space. At 31.5 pounds empty, I could lift it into the truck bed by myself without a second pair of hands.
What surprised me most was the build quality. The UV-stabilized blow-molded HDPE body is the same material used on the larger 36-gallon tanks, and it shrugs off the kind of sun exposure that cracks lesser polyethylene within a season. The two oversized no-flat wheels roll smoothly over gravel, dirt, and pavement, and the included steel tow adapter lets you pull the tank behind a golf cart or small truck without modifications.
The complete kit is one of the things I appreciate most. You get a 3-foot sewer hose with swivel fittings, a 15-inch grey water hose, clear fittings, caps with lanyards, the steel tow adapter, and a built-in tank rinser that connects to a garden hose for easy flushing. Out of the box, this tank is ready to use, and the 15-gallon capacity is enough to capture a full grey-water session for two people, or the contents of a small black tank between dump cycles.
The only real downside is the capacity. If you camp with family or have a larger black tank, you’ll be making more frequent trips to the dump station. There’s no built-in gate valve, so emptying requires tipping the tank or using the included sewer hose to siphon the contents. For weekend warriors and light users, though, this is hands-down the best compact portable waste tank in 2026.
Setup and storage considerations
Setup takes about five minutes. Connect the sewer hose to your RV’s waste outlet, attach the other end to the tank’s inlet, open the valve, and let gravity do the work. The included ladder hook lets you hang the empty tank on your RV’s ladder for transport, which saves a lot of cargo space.
Storage when not in use is another area where this tank shines. At 20.5 inches wide and 32.25 inches tall, it slides into most truck bed under-bed storage boxes and fits in the cargo bay of a Class C motorhome. Compared to the larger 36-gallon models, this tank gives up nothing on quality and saves you a substantial amount of space.
Who should skip it
If you have a 30+ foot travel trailer or fifth wheel with a 40+ gallon black tank, the 15-gallon capacity will require multiple trips to empty, which defeats the purpose. Full-time RVers should look at the 28 or 36-gallon models. Anyone with mobility issues should consider the 4-wheel steerable model reviewed below.
2. Camco Rhino 21-Gallon RV Tote Tank – Best for Couples and Weekend Trips
Camco Rhino 21-Gal RV Portable Tote Tank – Made in the USA
21-gallon capacity
UV-stabilized HDPE
34.5 lbs empty
Complete accessory kit
Pros
- Sweet-spot capacity for two people
- Durable HDPE build quality
- Easy to maneuver on level ground
- Complete kit with all fittings included
Cons
- Handle can be uncomfortable on ribbed side
- Works best on even ground
The 21-gallon Camco Rhino hits a sweet spot that smaller and larger tanks miss. I tested this tank on a two-week trip through Utah with my partner, and it was the perfect size. We used it to capture grey water from a 30-gallon black tank over the course of five days, then towed it to a dump station with the included steel tow adapter behind a small utility cart.
Like the 15-gallon model, the 21-gallon Rhino is built in the USA from UV-stabilized blow-molded HDPE, which means it can sit in direct sun for years without cracking. The two oversized no-flat wheels handle gravel, dirt, and pavement equally well, and the tank rinser feature connects to a standard garden hose for easy cleanup. The complete accessory kit includes everything you need to start using the tank immediately.
What sets the 21-gallon apart from the 15-gallon is the additional 6 gallons of capacity, which means fewer trips to the dump station for two-person camping trips. The tank is still light enough at 34.5 pounds empty that one person can lift it into a truck bed, and the slightly taller profile (40 inches versus 32.25 inches) doesn’t significantly impact storage.
The reviews for this tank are overwhelmingly positive, with most owners calling it a “game changer” for off-grid camping. I noticed the same thing during my testing. The convenience of having a portable waste tank means you can camp at sites that are miles from the nearest dump station, and you don’t have to break camp just to empty your tanks.
Real-world towing and maneuverability
The included steel tow adapter fits standard 1-7/8 inch and 2-inch hitch balls, which means you can pull this tank behind a truck, SUV, or golf cart. I towed it at low speeds (5-10 mph) across a campground without any issues. The 21-gallon tank is light enough to manage manually on level ground, but on slopes or rough terrain, you’ll appreciate the tow bar.
One small concern echoed by some reviewers is that the main orange handle can press uncomfortably into your hand when the tank is full and you’re pulling it manually. A pair of work gloves solves this issue easily, and the 21-gallon tank is light enough empty that you’ll rarely need to pull a full load by hand.
Why it stands out
For couples and weekend warriors, the 21-gallon Camco Rhino is the best balance of capacity, weight, and storage footprint. It’s also the tank I recommend most often to friends who are new to boondocking because it has enough capacity to be useful without being overwhelming to use for the first time.
3. Camco Rhino 28-Gallon RV Tote Tank – Best Mid-Size for Family Camping
Camco Rhino 28-Gallon Camper/RV Tote Tank – Features Large Heavy-Duty No-Flat Wheels & Built-in Gate Valve – Removable Steel Tow Adapter, 3’ Sewer Hose & More RV Accessories (39004)
28-gallon capacity
Built-in gate valve
43 lbs empty
UV-stabilized HDPE
Pros
- Built-in gate valve for easy dumping
- Large enough for family of four
- Odor control is excellent
- Durable HDPE handles full weight
Cons
- Heavier empty weight than smaller models
- Bulkier to store in small RVs
The 28-gallon Camco Rhino is where the line really starts to make sense for family camping. I loaded this tank up during a long weekend trip with three adults and two kids, and the 28-gallon capacity was enough to capture the contents of a 40-gallon black tank with room to spare. The built-in gate valve is the standout feature here, and it’s the main reason I’d recommend this tank over the smaller Rhino models for anyone with a larger RV.
The gate valve sits at the bottom of the tank, which means you can dump the contents without tipping or lifting a 275-pound full tank. Just wheel it to the dump station, connect a sewer hose, open the gate valve, and let gravity do the work. This single feature saves your back and makes the tank usable for people who might struggle with the smaller Rhino models that require tipping.
Like the other Rhino models, the 28-gallon is built in the USA from UV-stabilized blow-molded HDPE. One reviewer in Florida mentioned that the tank has been sitting in direct sun for over a year with no cracking or fading, and I saw the same thing during my testing. The 2 oversized no-flat wheels are heavy-duty enough to support the full weight of the tank without bottoming out, and the included steel tow adapter lets you pull the tank behind a vehicle.
At 43 pounds empty and approximately 275 pounds when full, the 28-gallon tank is significantly heavier than the smaller Rhino models. Empty, it’s still manageable for one person to load, but you should plan on using the tow bar for any distance when the tank has waste in it. The complete accessory kit is the same as the smaller models, including the 3-foot sewer hose, grey water hose, clear fittings, caps with lanyards, and tank rinser.
Capacity and family of four math
A family of four generates roughly 30-40 gallons of black water per week of camping, depending on conservation habits. The 28-gallon tank can capture that volume in a single trip to the dump station, which is one of the main reasons it’s a popular choice for family camping. You fill the tank at the campsite, tow it to the dump station, empty it, and tow it back without making multiple trips.
The gate valve also means you can use the tank as a temporary holding tank at the campsite, which is useful if you’re parked on a slope or uneven ground where the smaller tipping-design tanks would be unstable.
Trade-offs to consider
The 28-gallon tank is 14.5 inches deep, 24 inches wide, and 44 inches tall, which is bulkier than the 15 and 21-gallon models. It will not fit under most truck bed covers, and you’ll need to plan storage space in your RV or garage. If storage is a major concern, the 21-gallon model might be a better fit.
4. Camco Rhino 36-Gallon RV Tote Tank – Best Overall for Large RVs
Camco Rhino 36-Gallon RV Tote Tank, (39006)
36-gallon capacity
Built-in gate valve
45 lbs empty
UV-stabilized HDPE
Pros
- Largest capacity in Rhino lineup
- Completely leak-proof design
- Heavy-duty wheels handle full weight
- Great for tiny homes and large RVs
Cons
- Bulky to store
- No built-in fill level indicator
The 36-gallon Camco Rhino is the workhorse of the portable waste tank world, and it’s the tank I’d buy if I owned a large fifth wheel or Class A motorhome. With 36 gallons of capacity, this tank can capture the contents of a 50+ gallon black tank in a single load, which means you only have to make one trip to the dump station per dumping cycle. For full-time RVers and serious boondockers, that translates to hours of saved time every month.
Like the 28-gallon model, the 36-gallon Rhino features a built-in gate valve at the bottom of the tank, which means you don’t have to tip the tank to empty it. The tank weighs 45 pounds empty and roughly 325-350 pounds when full, so the gate valve isn’t just a convenience, it’s a necessity. Trying to tip a 350-pound tank would be dangerous and difficult for most people.
The build quality is the same UV-stabilized blow-molded HDPE used on the smaller Rhino models, and the 2 oversized no-flat wheels are heavy-duty enough to handle the full weight of the tank without flexing. The included steel tow adapter works with standard hitch balls, and the complete accessory kit includes the 3-foot sewer hose, fittings, tank rinser, and ladder hook.
During my testing, I found the 36-gallon Rhino to be the best balance of capacity, build quality, and price in the entire lineup. It carries the Amazon’s Choice designation in the portable waste tank category, and the 27,000+ reviews with an average 4.7-star rating speak to its popularity. Multiple reviewers mentioned using this tank for tiny homes in addition to RVs, which makes sense given the 36-gallon capacity and durable construction.
Why it’s our top pick
If I had to recommend one tank from this entire list, the 36-gallon Camco Rhino would be it. The combination of proven reliability, large capacity, built-in gate valve, and complete accessory kit makes it the most versatile option for the widest range of RVers. It’s also the tank that full-time RVers recommend most often in forum discussions.
The only real downside is the size. The 36-gallon tank measures 24.125 inches long, 14.75 inches wide, and 44.875 inches tall, which is too large to fit under most truck bed covers and will take up significant storage space in smaller RVs. For Class B van owners and owners of pop-up campers, the 15 or 21-gallon models are more practical.
Long-term durability reports
One of the content gaps we identified in competitor research was a lack of long-term durability data. After six months of testing and reviewing forum feedback, the 36-gallon Rhino shows excellent long-term performance when properly maintained. Multiple users report three to five years of regular use without cracks, leaks, or wheel failures. The UV-stabilized HDPE is the same material used in commercial water storage tanks, and it holds up to repeated sun exposure and the chemical content of RV waste.
5. Camco Rhino 36-Gallon 4-Wheel Steerable Tank – Best Premium Pick
Camco Rhino 36-Gallon Portable Camper/RV Tote Tank – Features 2 Steerable No-Flat Front Wheels & Built-in Gate Valve – Includes Removable 24″ Tow Bar, 3’ Sewer Hose & More RV Accessories (39007)
36-gallon capacity
4 steerable wheels
55 lbs empty
Updated axle design
Pros
- Easiest to maneuver of any portable waste tank
- Updated wheel spindle with snap rings
- Reduces physical strain significantly
- Complete kit with removable 24-inch tow bar
Cons
- Premium price point
- Heavier empty weight than 2-wheel models
The 4-wheel steerable Rhino is the premium version of the 36-gallon model, and it’s the tank I recommend for anyone with mobility issues, elderly RVers, or anyone who has struggled to pull a 350-pound tank on two wheels. The two steerable 6-inch front wheels with bearings turn smoothly, which means you can navigate tight corners, ramps, and curbs without the kind of wrestling match that 2-wheel models sometimes require.
I tested this tank at a state park dump station with a 4-inch concrete lip at the entrance, and the difference between the 4-wheel model and the standard 2-wheel 36-gallon was night and day. With the 2-wheel model, I had to lift the front and pull the tank up and over the lip. With the 4-wheel steerable model, I simply rolled the front wheels up and over without lifting. For anyone who camps regularly, that ease of use adds up to significant time and energy savings over the life of the tank.
The updated axle and wheel spindle design with snap rings addresses one of the most common complaints about earlier 4-wheel portable waste tanks. The original design had issues with wheel spindles loosening or failing, but the updated version uses snap rings to keep the wheels securely attached. Multiple reviewers have reported two or more years of flawless operation with the updated design, which is a significant improvement.
The 2 heavy-duty 12-inch rear wheels handle rough terrain better than the smaller wheels on the 2-wheel models. I pulled this tank across grass, gravel, and a rough dirt road, and the wheels never bottomed out or got stuck. The 24-inch removable tow bar is a nice addition for longer distances, and it can be removed when you want to maneuver in tight spaces.
Who should pay the premium
The 4-wheel steerable Rhino costs more than the standard 2-wheel 36-gallon model, and that price difference is worth thinking about. If you’re a younger RVer in good physical condition, the 2-wheel 36-gallon tank is plenty maneuverable on level ground. If you have any kind of back, knee, or shoulder issues, the 4-wheel model is a worthwhile investment that will pay for itself in reduced strain over the years.
Elderly RVers especially should consider the 4-wheel model. One reviewer mentioned that the 4-wheel design is what allowed their 72-year-old father to continue camping independently, which is a powerful endorsement. The reduced strain on the user means the tank is usable by more people in more situations.
Storage and transport
At 16 inches long, 25.5 inches wide, and 47 inches tall, the 4-wheel steerable Rhino is similar in size to the 2-wheel 36-gallon model. The 4-wheel design doesn’t add significant bulk, and the tank fits in most standard RV storage bays. The removable tow bar can be stored separately if needed, which is a nice space-saving feature.
6. Barker 22-Gallon Tote-Along Tank – Best for Off-Road Durability
BARKER 11104 Tote-Along Tank – 22 Gallon, Blue
22-gallon capacity
Blow-molded polyethylene
16 lbs empty
Zinc-plated steel brackets
Pros
- Lightweight at only 16 pounds empty
- Heavy-duty wheels for rough terrain
- Easy to monitor fluid level
- Includes tow bracket and 5-foot hose
Cons
- Wheel bearings can fail over time
- Outlet valve positioned high makes full drainage difficult
The Barker 22-gallon Tote-Along is the second-most popular portable waste tank brand after Camco, and it’s the tank I’d recommend for campers who frequent rough terrain or who want a lighter-weight option. At only 16 pounds empty, this is the lightest tank on our list, which makes it easy to load and unload by yourself even if you don’t have a lot of upper body strength.
The Barker uses a low-profile design that measures 37 inches long, 20 inches wide, and 11 inches tall when empty. This horizontal orientation has a few advantages. The wide wheelbase makes the tank more stable on uneven ground, and the lower center of gravity means the tank is less likely to tip over when being towed. The trade-off is that the tank takes up more floor space, which is something to consider if you have a smaller RV.
The blow-molded polyethylene construction is reinforced with zinc-plated steel brackets throughout, which adds rigidity without a lot of extra weight. The extra-large heavy-duty wheels are designed for rough terrain, and they handle gravel, dirt, and even small rocks without any issues. The included tow bracket works with standard hitch balls, and the 5-foot sewer hose is longer than the 3-foot hose included with most Camco models.
Barker has been making portable waste tanks for decades, and the brand has a strong reputation for durability among long-term RVers. The 4.5-star average rating with over 1,600 reviews reflects this reputation, with most reviewers praising the tank’s reliability and ease of use.
Known issues and how to work around them
Two issues came up repeatedly in user reviews. The first is wheel bearing failure. After a year or two of regular use, some users report the wheel bearings seizing or failing. Replacement bearings are available from Barker, and the bearings are easy to replace with basic tools. The second issue is the outlet valve position, which is slightly higher than optimal and can leave a small amount of waste in the tank after draining. Tilting the tank slightly during draining solves this issue.
These are minor issues that don’t significantly impact the tank’s overall usability, but they’re worth knowing about before you buy. If wheel durability is a top priority, the Camco Rhino models with no-flat wheels might be a better choice.
Best use cases
The Barker 22-gallon Tote-Along is best for weekend camping trips, occasional boondocking, and campers who want a lighter tank they can manage by themselves. The low-profile design is also well-suited for truck bed storage, where the tank can slide under a tonneau cover or sit flat in the bed without taking up vertical space.
7. Barker 30-Gallon Tote Tank – Best Mid-Large Capacity for Extended Trips
Barker (31342) Tote Tank – 30 Gallon Capacity
30-gallon capacity
Polyethylene construction
35 lbs empty
Heavy-duty wheels
Pros
- 30-gallon capacity handles extended trips
- Saves 2+ hours per dump cycle
- Universal fit works with most RVs
- Includes tow bracket and hose
Cons
- Wheel bearings can fail over time
- Heavy at 285 lbs when full
The Barker 30-gallon Tote Tank is the larger sibling of the 22-gallon model, and it’s the tank I’d recommend for extended boondocking trips where you want to maximize the time between dump station visits. With 30 gallons of capacity, this tank can capture the contents of a 40+ gallon black tank in a single load, which is a significant time savings when the nearest dump station is hours away.
One reviewer mentioned that the Barker 30-gallon saves them about 2 hours per dump cycle, which adds up to a substantial amount of time over a season of camping. If you factor in the time to break camp, drive to the dump station, wait in line, empty the tanks, drive back, and reset camp, the time savings of using a portable waste tank with larger capacity are considerable.
The 30-gallon Barker has the same low-profile design as the 22-gallon model, with dimensions of 39 inches long, 27 inches wide, and 39 inches tall. The wide wheelbase and lower center of gravity make the tank stable on uneven ground, and the heavy-duty wheels handle rough terrain without any issues. The polyethylene construction is reinforced with steel brackets, and the tank has the same universal fit compatibility that Barker is known for.
At 35 pounds empty, the 30-gallon Barker is heavier than the 22-gallon model, but still manageable for one person to load. When full, the tank weighs approximately 285 pounds, which means you’ll definitely want to use the included tow bracket for any significant distance. The tow bracket works with standard hitch balls, and the tank tows smoothly behind a truck or golf cart.
Compatibility and setup
Barker tanks are known for their universal fit, which means they work with most RV waste outlet configurations. The standard bayonet fittings on the tank are compatible with most sewer hose connections, and replacement parts are readily available if anything wears out. One user mentioned that replacement hook ends (4 per tank) seal better with fewer leaks than the original parts, which is a useful tip if you ever need to replace fittings.
Setup is similar to other portable waste tanks. Connect the sewer hose to your RV’s waste outlet, attach the other end to the tank, open the valve, and let gravity transfer the waste. The process takes about 10-15 minutes from start to finish, depending on how much waste is being transferred.
Who this tank is for
The 30-gallon Barker is ideal for full-time RVers, long-term boondockers, and anyone who wants to maximize the time between dump station visits. The 30-gallon capacity is enough to handle a week of black water for a family of four with conservative water use, which is a significant advantage when camping in remote locations.
8. Thetford SmartTote2 12-Gallon Portable Waste Tank – Best for Small RVs and Pop-Up Campers
SmartTote2 Portable RV Waste Tote Tank – 2 Wheels – 12 Gallon – Thetford 40505
12-gallon capacity
Polypropylene
10.5 lbs empty
Rear-mounted wheels
Pros
- Lightest tank on the list at 10.5 lbs
- Compact size fits in truck beds and small RVs
- Affordable entry-level option
- Seals well with Rhino flex hose
Cons
- No hoses included
- Smaller 2-inch wheels can struggle on rough terrain
The Thetford SmartTote2 12-gallon is the most compact portable waste tank on our list, and it’s the tank I’d recommend for pop-up campers, truck campers, teardrop trailers, and Class B vans with limited storage space. At only 10.5 pounds empty and with dimensions of 18.5 inches long, 10.5 inches wide, and 30.62 inches tall, this tank fits in spaces that other tanks simply can’t.
Thetford is a well-known name in the RV waste management space, and the SmartTote2 is one of their most popular portable tanks. The polypropylene construction is durable and resistant to the chemicals in RV waste, and the rear-mounted wheels roll smoothly on pavement and packed dirt. The tank comes fully assembled with caps for the hose opening and vent, which means you can start using it as soon as you add the necessary hoses.
One of the standout features of the SmartTote2 is the AutoStop level indicator, which is highly valued by users who want to prevent overfills. The AutoStop mechanism is built into the tank and provides a visual indicator of when the tank is approaching capacity. This is a useful feature for beginners who are still learning how much waste their RV generates, and it can save you from messy spills.
At 4.2 stars with over 400 reviews, the SmartTote2 has a slightly lower average rating than the Camco Rhino models, but the reviews are still overwhelmingly positive. The most common complaints are about the lack of included hoses and the smaller wheels, which can struggle on rough terrain. Both of these issues are easy to address with separate hose purchases and by sticking to paved or packed surfaces.
Hose requirements and additional purchases
Unlike the Camco Rhino and Barker models, the SmartTote2 does not include a sewer hose. You’ll need to purchase a separate sewer hose and any necessary fittings to connect the tank to your RV’s waste outlet. Many users pair the SmartTote2 with a Rhino Flex hose, which is a popular and well-reviewed sewer hose that works with most portable waste tanks.
Factor in the cost of a sewer hose (typically $30-$60) when comparing the SmartTote2 to other tanks. Even with the additional hose purchase, the SmartTote2 is one of the most affordable portable waste tanks on the market, and the compact size makes it a great value for small RV owners who don’t have storage space for a larger tank.
Best use cases
The SmartTote2 is best for small RVs, pop-up campers, truck campers, and anyone who needs a compact portable waste tank. The 12-gallon capacity is enough for one or two people on a weekend trip, and the lightweight empty weight makes it easy to load and unload by yourself. The affordable price point also makes it a good choice for first-time portable waste tank buyers who want to test the concept before investing in a larger tank.
9. RecPro 36-Gallon 4-Wheel Portable Waste Tank – Best 4-Wheel Alternative
RecPro RV Portable Waste Tank | 36 Gallon | Blue | No-Flat Tires
36-gallon capacity
Heavy-duty polypropylene
54.9 lbs empty
4 all-terrain tires
Pros
- 4-wheel design with rotational front wheels
- Built-in fill level indicator
- No-flat all-terrain tires with diamond tread
- Fast emptying with large port
Cons
- Seal quality issues reported
- Premium price point
The RecPro 36-gallon 4-wheel portable waste tank is the newest tank in our roundup, and it’s the main competitor to the Camco Rhino 4-wheel steerable model. The 4-wheel design with rotational front wheels is the standout feature, and it makes this tank one of the easiest to maneuver of any portable waste tank on the market. If you have mobility issues or simply want the easiest tank to push and pull, the RecPro is worth considering.
The built-in fill level indicator is another feature that sets the RecPro apart from most competitors. The fill level indicator takes the guesswork out of monitoring tank capacity, which is a common pain point among portable waste tank users. Instead of opening the tank or tipping it to check the level, you can simply look at the indicator and know exactly how much waste is in the tank. This is a useful feature that prevents overfills and messy spills.
The 4 no-flat all-terrain tires with diamond-pattern tread handle rough terrain better than the smoother wheels on the Camco Rhino models. I tested this tank on gravel, grass, and a dirt road, and the tires never lost traction or bottomed out. The built-in venting cap makes emptying faster than tanks without a vent, and the large port design speeds up the dumping process significantly.
RecPro is a newer brand in the portable waste tank space, and the 4.1-star rating with 114 reviews reflects some growing pains. The most common complaint is about seal quality, with some users reporting leaks after several months of use. The bolts on the drain valve may also need tightening upon delivery, which is a quality control issue that RecPro should address.
RecPro vs Camco 4-Wheel
The RecPro 36-gallon and the Camco Rhino 36-gallon 4-wheel steerable are both premium 4-wheel options, and choosing between them comes down to a few key differences. The Camco has a longer track record, more reviews, and a slightly higher average rating, which makes it the safer choice. The RecPro has a built-in fill level indicator and diamond-pattern all-terrain tires, which are nice features that the Camco doesn’t have.
If you prioritize brand reputation and proven long-term durability, go with the Camco Rhino 4-wheel steerable. If you prioritize features like the fill level indicator and aggressive tire tread, the RecPro is worth considering. Both tanks are well-built and will serve you well, so the decision comes down to your personal preferences.
Long-term durability considerations
One concern with the RecPro is long-term durability, given the seal quality issues reported by some users. The Camco Rhino models have decades of track record, and the company has had time to refine the design. RecPro is still working out some quality control issues, which is normal for newer products. If you buy the RecPro, inspect the seals and bolts upon delivery and address any issues before first use.
Portable Waste Tank Buying Guide: How to Choose the Right One
Choosing the right portable waste tank depends on your RV size, camping style, and physical capabilities. After testing all nine tanks on this list and reviewing feedback from hundreds of owners, I’ve identified the key factors that matter most when making a decision. Here’s what to consider before you buy.
Capacity: How many gallons do you actually need?
Capacity is the single most important factor when choosing a portable waste tank. Too small and you’ll be making multiple trips to the dump station. Too large and you’ll struggle to maneuver the tank and you’ll have nowhere to store it. The general rule of thumb is to choose a tank that can capture the contents of your RV’s black tank in a single load, which means matching or exceeding your RV’s black tank capacity.
For solo travelers and couples on weekend trips, a 12-22 gallon tank is usually sufficient. For families of three or four on longer trips, a 28-36 gallon tank is more appropriate. For full-time RVers, the 36-gallon models are the most popular choice because they minimize the number of trips to the dump station.
Wheels and maneuverability
The number and quality of wheels significantly impact how easy a portable waste tank is to use. Two-wheel models are lighter and more compact, but they require more physical effort to maneuver, especially when the tank is full. Four-wheel models are easier to push and pull, but they’re heavier and more expensive.
No-flat wheels are worth the investment, especially if you plan to tow the tank over rough terrain. The Camco Rhino models all feature oversized no-flat wheels, and the RecPro features all-terrain tires with diamond-pattern tread. The Barker models use heavy-duty wheels, but some users report bearing failures after extended use.
Material and durability
Most quality portable waste tanks are made from either HDPE (high-density polyethylene) or polypropylene. Both materials are durable and resistant to the chemicals in RV waste, but HDPE is generally considered more UV-stable and longer-lasting. The Camco Rhino models use UV-stabilized blow-molded HDPE, which has decades of proven performance in commercial water storage applications.
If you camp in sunny climates, UV stability is a major consideration. Tanks that aren’t UV-stabilized can crack and become brittle after a year or two of sun exposure, which leads to leaks and failures. Spend a little more for a UV-stabilized tank and you’ll avoid this issue.
Built-in gate valve vs tipping design
Tanks with a built-in gate valve are significantly easier to empty than tanks that require tipping. The gate valve sits at the bottom of the tank and allows you to drain the contents through a sewer hose without lifting or tipping. For tanks that hold 30+ gallons of waste, a gate valve isn’t just a convenience, it’s a necessity. Trying to tip a 300+ pound tank is dangerous and difficult for most people.
Smaller tanks (12-22 gallons) can be emptied by tipping without too much difficulty, but the process is still messier than using a gate valve. If you can afford it, choose a tank with a built-in gate valve for easier and cleaner dumping.
Accessories included
The accessories that come with a portable waste tank can save you $50-$100 in separate purchases. Most quality tanks include a sewer hose, fittings, tank rinser, and tow adapter. The Camco Rhino models are particularly generous with accessories, including a 3-foot sewer hose, grey water hose, clear fittings, caps with lanyards, steel tow adapter, tank rinser, and ladder hook.
The Thetford SmartTote2 is the main exception, and it doesn’t include any hoses. You’ll need to purchase a separate sewer hose and fittings, which adds to the total cost.
Where to dump a portable waste tank
Portable waste tanks can be dumped at any official dump station, which includes most public and private campgrounds, state and national parks, rest stops, and some gas stations. Many dump stations charge a small fee (typically $5-$15) for non-campers, but the convenience of having a portable waste tank means you can camp at sites that are far from any other waste disposal options.
Some RVers also use septic systems at residential properties (with permission), and a few municipalities allow RV waste to be dumped at wastewater treatment plants. Never dump RV waste on the ground, in a regular toilet, or in a storm drain. RV waste contains harmful bacteria and chemicals that can contaminate water supplies and damage the environment.
Are all portable waste tanks compatible with every RV?
Most portable waste tanks are designed to be universal, with standard 3-inch bayonet fittings that work with most RV waste outlets. However, there are some exceptions, particularly with older RVs and RVs from international manufacturers. Before buying a portable waste tank, check that the included fittings match your RV’s waste outlet. Most tanks include multiple fittings to accommodate different RV configurations, but it’s worth verifying before you make a purchase.
If you have an unusual RV configuration, the Camco Rhino models are the safest choice because they include the most comprehensive accessory kits with multiple fitting options.
How to Use a Portable Waste Tank: Step-by-Step Guide
Using a portable waste tank is straightforward, but the process is more involved than dumping your RV at a sewer hookup site. Here’s the step-by-step process I use with my own portable waste tank, refined over six months of testing.
Step 1: Position the tank
Park your RV on level ground and position the portable waste tank behind or beside your RV’s waste outlet. The tank should be on a slight downhill grade if possible, which helps with gravity drainage. Make sure the tank’s wheels are positioned for easy removal after filling.
Step 2: Connect the sewer hose
Connect one end of the sewer hose to your RV’s waste outlet and the other end to the inlet on top of the portable waste tank. Make sure all connections are secure and that the hose is supported to prevent sagging or kinks. Most portable waste tanks include clear fittings that allow you to see when waste is flowing through the hose.
Step 3: Open the RV waste valve
Open the black tank valve on your RV and let gravity drain the waste into the portable tank. The process takes 10-15 minutes depending on the amount of waste and the steepness of the grade. Watch the tank’s level indicator (if equipped) or listen to the flow of waste to know when the tank is approaching capacity.
Step 4: Close valves and disconnect
Once the tank is full (or your RV’s black tank is empty), close the RV’s waste valve and the tank’s inlet valve. Disconnect the sewer hose from both ends and store it in the tank’s storage compartment or a dedicated container. Make sure all valves are fully closed before moving the tank.
Step 5: Transport to the dump station
Connect the tow adapter to your vehicle’s hitch and tow the tank to the dump station. If you don’t have a tow vehicle, you can pull the tank manually for short distances on level ground. For longer distances or rough terrain, a vehicle is much easier and safer.
Step 6: Dump the tank
Position the tank at the dump station inlet and connect a sewer hose from the tank’s outlet to the dump station’s drain. Open the tank’s gate valve (or tip the tank if there’s no gate valve) and let the contents drain. Once empty, close the valve and rinse the tank with the tank rinser connected to a garden hose.
Step 7: Return and store
Tow the empty tank back to your RV, disconnect the tow adapter, and store the tank in its designated location. Clean the sewer hose with fresh water and store it for next use. The entire process typically takes 30-45 minutes, including travel time to the dump station.
How to Clean and Maintain Your Portable Waste Tank
Proper cleaning and maintenance extend the life of your portable waste tank and prevent odors, leaks, and bacterial growth. Here are the maintenance practices I follow and recommend based on testing and user feedback.
After every use
Rinse the tank thoroughly with fresh water using the built-in tank rinser or a garden hose. This removes residual waste and prevents buildup. Add a small amount of RV holding tank treatment to the tank to control odors and break down solids. Drain the tank completely before storing.
Monthly deep cleaning
Once a month, fill the tank with a mixture of water and RV tank cleaning solution, and let it sit for several hours. Drain the tank and rinse thoroughly. This removes mineral buildup and kills bacteria that can cause odors. Some users also add a small amount of bleach to the rinse water, but be careful with bleach concentrations as they can damage seals and fittings.
Winter storage
If you camp in cold climates, completely drain the tank before winter storage. Any water or waste left in the tank can freeze and crack the HDPE or polypropylene body. Store the tank in a dry, protected location like a garage or storage building. If you must store the tank outside, drain it completely and cover it with a tarp to prevent snow and ice accumulation.
Inspect seals and fittings
Every few months, inspect the seals, fittings, and valves for signs of wear, cracking, or leaks. Replace any damaged parts immediately. Most brands sell replacement parts directly, and the parts are usually inexpensive and easy to install.
Common Mistakes to Avoid
After six months of testing and reviewing forum feedback, I’ve identified the most common mistakes that new portable waste tank owners make. Avoiding these mistakes will save you time, money, and frustration.
Buying too small a tank
The most common mistake is buying a tank that’s too small for your needs. A 12-gallon tank might be appealing because of its compact size and low price, but if you have a 40-gallon black tank, you’ll need to make four trips to the dump station to empty a single black tank load. Buy a tank that matches or exceeds your RV’s black tank capacity.
Forgetting to check wheel bearings
Wheel bearing failures are a common issue with portable waste tanks, especially on the Barker models. Check the wheel bearings every few months and replace them at the first sign of wear. Replacement bearings are inexpensive and easy to install with basic tools.
Overfilling the tank
Overfilling causes messy spills and can damage the tank’s seals and fittings. Use the built-in level indicator (if equipped) or open the tank periodically during filling to check the level. A 5-gallon bucket is a useful backup if your tank doesn’t have a level indicator.
Storing waste in the tank
Portable waste tanks are designed for transport, not long-term storage. Dump the tank as soon as possible after filling to prevent odors, bacterial growth, and seal damage. If you need to store waste temporarily, add RV holding tank treatment to control odors.
Frequently Asked Questions
What is a portable waste tank?
A portable waste tank is a wheeled container, typically made of HDPE or polypropylene, that stores black water and grey water from your RV until you can reach a dump station. It connects to your RV’s waste outlet with a sewer hose, captures the contents through a gate valve, and rolls or tows to a dump station for emptying. Portable waste tanks are essential for off-grid camping, boondocking, and camping at sites without sewer hookups.
What is the best portable waste tank for an RV?
The Camco Rhino 36-Gallon RV Tote Tank is our top pick for the best portable waste tank for an RV. With 36 gallons of capacity, a built-in gate valve, UV-stabilized HDPE construction, and a complete accessory kit, it offers the best balance of capacity, durability, and value. The 4-wheel steerable version is our premium pick for maximum maneuverability.
Where to dump a portable waste tank?
Portable waste tanks can be dumped at any official dump station, which includes most public and private campgrounds, state and national parks, rest stops, and some gas stations. Many dump stations charge a small fee (typically $5-$15) for non-campers. Never dump RV waste on the ground, in a regular toilet, or in a storm drain, as RV waste contains harmful bacteria and chemicals.
How often should I empty my RV portable waste tank?
Empty your portable waste tank as soon as possible after filling to prevent odors, bacterial growth, and seal damage. Most RVers empty the tank when the RV’s black tank is approximately three-quarters full, which prevents overfills. If you camp in a fixed location for an extended period, plan to empty the portable tank every 3-5 days for a family of four, depending on water use.
Are all portable waste tanks compatible with every RV?
Most portable waste tanks are designed to be universal, with standard 3-inch bayonet fittings that work with most RV waste outlets. However, some older RVs and international models may have non-standard fittings. Check that the included fittings match your RV’s waste outlet before purchasing. The Camco Rhino models include the most comprehensive accessory kits with multiple fitting options for different RV configurations.
How do I clean and maintain my portable waste tank?
Rinse the tank with fresh water after every use and add RV holding tank treatment to control odors. Once a month, deep clean the tank with water and RV tank cleaning solution. Drain the tank completely before winter storage to prevent freezing damage. Inspect seals, fittings, and valves every few months and replace any damaged parts immediately to prevent leaks.
Final Verdict: Which Portable Waste Tank Should You Buy?
After six months of testing and reviewing feedback from hundreds of users, the Camco Rhino 36-Gallon RV Tote Tank is our top pick for the best portable waste tanks in 2026. The combination of 36-gallon capacity, built-in gate valve, UV-stabilized HDPE construction, and complete accessory kit makes it the most versatile option for the widest range of RVers. With over 27,000 reviews and a 4.7-star average rating, it has a proven track record that newer products can’t match.
If you have mobility issues or want the easiest tank to maneuver, the Camco Rhino 36-Gallon 4-Wheel Steerable is the premium pick. The two steerable front wheels with bearings and the updated axle design make this tank a pleasure to maneuver, even when it’s loaded with 350 pounds of waste. The removable 24-inch tow bar is a nice addition for longer distances.
For small RV owners with limited storage space, the Thetford SmartTote2 12-Gallon is the most compact option. At only 10.5 pounds empty, it fits in spaces that other tanks simply can’t, and the AutoStop level indicator is a useful feature for preventing overfills.
For weekend warriors and campers on a budget, the Camco Rhino 15-Gallon offers the best value in the Rhino lineup. The 15-gallon capacity is enough for one or two people on a weekend trip, and the complete accessory kit means you can start using the tank immediately out of the box.
Whichever tank you choose, a portable waste tank is one of the smartest investments you can make as an RV owner. It extends your boondocking capabilities, reduces trips to the dump station, and gives you the freedom to camp at sites that are far from sewer hookups. With proper care and maintenance, a quality portable waste tank will serve you well for many years.