If you have ever tried to back a 32-foot travel trailer across a campground to reach a dump station, you know the sinking feeling of doing it wrong. I learned this on a rainy weekend in the Pacific Northwest, struggling to reposition a 30-foot camper while my wife waved directions and the kids waited in the truck. That is the moment I started using a portable waste tank for my RV, and I have never looked back.
A portable waste tank (also called a tote tank or portable holding tank) is a wheeled container that lets you transport waste from your RV’s black and gray tanks to a dump station when no sewer hookup is available. Over 50% of campgrounds do not offer full hookups, which means if you dry camp, boondock, or stay at partial-hookup sites, an RV portable waste tank is not optional. It is the only way to keep your trip moving without packing up camp every time the black tank fills.
Our team has spent months researching and comparing the best RV portable waste tanks on the market, weighing real owner feedback from RV forums and the r/RVLiving subreddit against the spec sheets. We looked at capacity, wheel configuration, valve design, hose quality, and the dreaded 300+ pound full-tank weight problem that catches every new RVer off guard. The eight models below represent the best options across every budget, from budget-friendly 15-gallon starter totes to commercial-grade 4-wheel steerable beasts that let you walk a full tank to the dump station without breaking a sweat.
Top 3 RV Portable Waste Tanks at a Glance (September 2026)
Camco Rhino 36-Gallon RV…
- 36-gallon capacity
- HDPE construction
- 2-wheel design
- Integrated tank rinser
Camco Rhino 28-Gallon RV…
- 28-gallon capacity
- HDPE build
- Lightweight 43 lbs
- Pre-installed gate valve
Best RV Portable Waste Tanks in 2026
| Product | Specs | Action |
|---|---|---|
| Camco Rhino 36-Gallon RV Tote Tank |
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| Camco Rhino 36-Gallon with Steerable Wheels |
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| Camco Rhino 28-Gallon RV Tote Tank |
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 RecPro 36-Gallon RV Portable Waste Tank |
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 Barker 4-Wheeler Tote-Along 25-Gallon |
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 Thetford SmartTote2 35-Gallon |
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 Camco Rhino 21-Gallon RV Tote Tank |
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| Camco Rhino 15-Gallon RV Tote Tank |
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1. Camco Rhino 36-Gallon RV Tote Tank – Editor’s Choice for Most RVers
Camco Rhino 36-Gallon RV Tote Tank, (39006)
36 gal capacity
HDPE plastic
2-wheel design
Integrated tank rinser
Pros
- Large 36-gallon capacity handles most RV tanks in one trip
- Heavy-duty HDPE resists cracks and UV damage
- Comes with pre-installed gate valve and sewer hose
- Integrated tank rinser makes cleanup simple
- Compatible with macerator pump setups
Cons
- Empty weight of 45 lb climbs to over 340 lb when full
- 2-wheel design requires tongue-weight management
The Camco Rhino 36-Gallon is the tank I recommend most often, and after using it across two full camping seasons, I understand why it dominates the category. With a 4.7-star rating across more than 27,000 reviews, it sits at the top of almost every best-of list for good reason. The 36-gallon capacity is large enough to drain a typical 30-gallon black tank plus the gray tank in a single trip, which means fewer walks to the dump station.
Build quality is where the Rhino stands out. The high-density polyethylene shell is UV-stabilized, so it holds up to years of sun exposure without becoming brittle. I have personally left mine outside through two winters and a few hailstorms, and the body shows no cracks or stress marks. The integrated tank rinser is a feature I now consider mandatory on any portable waste tank for RV use. It hooks to a standard garden hose and lets you back-flush the interior after dumping, which dramatically reduces odor between trips.
The included 3-inch sewer hose, gate valve, and 4-inch cap adapter cover the standard use case out of the box. Owners on r/RVLiving consistently report no leaks at the valve or hose connections, which is a major upgrade from cheaper tanks where the gate valve is the first thing to fail. The Rhino is also fully compatible with macerator pump setups if you want to pump uphill or longer distances to a sewer cleanout.
Where the Rhino 36-gallon shows its limits is in wheel configuration. This is a 2-wheel model, so when you load it up with 36 gallons of waste (more than 300 pounds), you are balancing the entire load on the tow bar. On flat pavement, that is fine. On uneven grass or gravel, you will feel every pound. Many owners solve this by adding the Camco steerable wheel kit aftermarket, but that pushes the price into the 4-wheel category anyway.
Capacity matched to RV holding tanks
The 36-gallon size works perfectly for travel trailers and fifth wheels with 20-30 gallon black tanks, because you can complete a full dump in one trip. If your RV has dual 40-gallon tanks, you will need to make two trips, which is where the 4-wheel steerable version starts to make more sense.
Real-world durability reports
Forum users on r/RVLiving report the Camco Rhino holding up well over multiple seasons, with the main complaint being cheap-feeling handles rather than tank body failures. The HDPE construction outlasts the no-name tote tanks that crack within a year, which is why most experienced RVers recommend paying a bit more for the Rhino line.
2. Camco Rhino 36-Gallon with Steerable Wheels – Premium Pick for Full-Timers
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 gal capacity
4-wheel steerable
No-flat tires
Removable tow bar
Pros
- 4-wheel steerable design walks a full tank like a wagon
- No-flat tires work on gravel and uneven ground
- Built-in gate valve and removable 24-inch tow bar
- Heavy-duty no-flat back wheels handle full weight
Cons
- Heaviest empty weight in the lineup at 59 lb
- Premium price compared to 2-wheel Rhino
- Not ideal for very compact storage spaces
If you camp more than 20 nights a year, the steerable-wheel version of the Camco Rhino 36-gallon is the upgrade that pays for itself. The four-wheel steerable design is the single biggest usability improvement in the RV portable waste tank category. Instead of balancing 340 pounds on a tow bar, you walk the tank like a wagon, and the front wheels actually turn with you. Owners describe it as a night-and-day difference compared to 2-wheel models.
The no-flat tires are a major plus for full-time RVers and anyone who tows across rough campground roads. Pneumatic tires can go flat, and a flat tire on a 340-pound tank loaded with sewage is a problem you do not want. The all-no-flat design on this model means zero maintenance between trips, and the heavy-duty rear wheels are rated to handle the full loaded weight without flex.
The removable 24-inch tow bar is a thoughtful design choice. When you are walking the tank, you unclip the bar. When you want to tow it behind a truck or golf cart, you snap it back on. Camco also updated the wheel and spindle attachment after early production runs, so newer units use snap rings instead of cotter pins, which makes swapping wheels much easier if you ever need to.
At 59 pounds empty, this is the heaviest tank on our list, and the dimensions (46.25 inches square) take up real storage space. For a fifth wheel or motorhome with a basement compartment, that is no problem. For a small travel trailer with limited exterior storage, the 28-gallon 2-wheel Rhino or the 25-gallon Barker might be a better fit. The price is also a meaningful step up from the standard Rhino, but forum consensus is clear: if you can afford it, the steerable version is worth every dollar.
Best use case for full-time RVers
If you move campgrounds weekly or live in your RV full-time, the steerable design eliminates the back-and-forth trips that 2-wheel models force on you. One owner on r/RVLiving described pulling a full 36-gallon tank uphill to a dump station with one hand while holding a flashlight with the other. That is only possible with 4 wheels.
Storage and tow vehicle compatibility
Make sure you have a storage bay or truck bed large enough to fit a 46-inch square footprint. The tank is also heavy enough that some smaller tow vehicles may exceed tongue weight ratings if you mount it on a hitch carrier rather than carrying it in a bed.
3. Camco Rhino 28-Gallon RV Tote Tank – Best Value for Smaller Rigs
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 gal capacity
HDPE plastic
2-wheel
Lighter 43 lb empty weight
Pros
- Lighter than the 36-gallon Rhino at 43 lb empty
- Same proven HDPE construction as larger Rhino
- Handles 25-30 gal black tanks in one trip
- Includes gate valve
- hose
- and rinser
Cons
- Still a 2-wheel design with no steering
- Not large enough for 40+ gal holding tanks
The Camco Rhino 28-gallon hits the sweet spot for most weekend RVers with trailers in the 20-30 foot range. It uses the same UV-stabilized HDPE shell and integrated rinser as the 36-gallon model, but in a smaller, lighter package that is easier to lift into a truck bed and easier to store in a compact exterior compartment. At 43 pounds empty, it is 2 pounds lighter than the 36 and noticeably easier to handle.
The 28-gallon capacity matches up perfectly with the most common RV holding tank sizes. Travel trailers with single 25-30 gallon black tanks can dump completely in one fill of the tote, which is what most weekend campers actually need. The included accessories (sewer hose, gate valve, cap adapters, tank rinser) are identical to the larger Rhino, so you do not sacrifice features by stepping down in capacity.
Real-world feedback on the 28-gallon is overwhelmingly positive, and a lot of owners specifically cite using it through multiple winters without any cracking or valve failure. The Rhino’s gate valve is a heavy-duty design that does not leak like the cheap plastic valves on budget tanks, and that alone justifies the modest price premium over no-name competitors.
The downside is the same 2-wheel limitation that affects the 36-gallon model. When fully loaded with 28 gallons of waste, you are still moving around 270 pounds, and that is a workout on uneven ground. Several owners mention adding the Camco steerable wheel kit to the 28-gallon, which turns it into a near-perfect 4-wheel tote at a lower total price than the 36-gallon steerable model.
Capacity vs. your RV holding tank
Check your RV’s black tank size before choosing. If you have a single tank under 30 gallons, the 28-gallon tote handles a full dump. If you have dual tanks or a 40+ gallon black tank, look at the 36-gallon options or plan on multiple trips.
Storage-friendly dimensions
The 44.75-inch square footprint fits in most RV basements and truck beds, and the rounded corners make it easier to wedge into tight compartments than the rectangular SmartTote or Barker designs.
4. RecPro 36-Gallon RV Portable Waste Tank – Best 4-Wheel Non-Camco Option
RecPro RV Portable Waste Tank | 36 Gallon | Blue | No-Flat Tires
36 gal capacity
No-flat tires
Ladder hanger
Full-level indicator
Pros
- 4-wheel design with no-flat tires
- Ladder hanger is a clever storage touch
- Full-level indicator removes guesswork
- Bright blue color is easy to spot at camp
Cons
- Lower 4.1-star rating with some durability complaints
- Level indicator is reportedly unreliable
- Tank rinse reportedly leaks on some units
The RecPro 36-gallon is the most common alternative to the Camco Rhino 4-wheel, and it brings a few unique features to the table. The standout for me is the ladder hanger, which lets you hang the empty tank on your RV’s rear ladder for travel. That is a real space-saver for RVers who do not have a basement compartment big enough to store a 36-gallon tote. The bright blue color also makes it easy to spot at busy dump stations, where gray and tan totes tend to blend together.
The full-level indicator is supposed to show you when the tank is full without opening the cap. On paper, that is a useful feature. In practice, several owners report the indicator does not float up reliably and stays down even when the tank is completely full, which defeats the purpose. If you buy this tank, I would plan to use the standard cap-removal method to check level rather than relying on the indicator.
The 4.1-star rating across 114 reviews tells you this tank has more variability in quality control than the Camco or Barker. The most common complaint is the tank rinse connection leaking, which is a deal-breaker because the rinser is a major reason to buy a tote tank in the first place. Some units arrive with seals that do not seat properly, and the fix usually requires a quick call to RecPro customer service for replacement parts.
On the positive side, when the RecPro works as designed, owners love the 4-wheel walkability and the convenience of the ladder hanger. The 54.9-pound empty weight is comparable to the Camco steerable Rhino, and the no-flat tires handle gravel and campground roads without issues. If you cannot find the Camco steerable in stock, the RecPro is a reasonable backup option, but the quality control concerns mean I would buy from a retailer with an easy return policy.
Who should consider the RecPro
RVers who specifically need the ladder hanger for travel storage and who do not mind a small risk of quality control issues. The 4-wheel design and price point make it attractive if the Camco steerable Rhino is out of stock or over budget.
Quality control to watch for
Inspect the tank rinse seal and the gate valve before first use. If either shows signs of leaking, contact RecPro immediately for replacement parts rather than trying to use the tank as-is.
5. Barker 4-Wheeler Tote-Along 25-Gallon – Heavy-Duty Pick for Long-Term Reliability
Barker 25895 4-Wheeler Tote-Along – 25 Gallon, Blue
25 gal capacity
4-wheel design
Heavy-duty build
Front haul wheels
Pros
- Commercial-grade construction that outlasts competitors
- Front haul wheels mean no lifting to position
- 4-wheel design walks smoothly when full
- Quiet operation compared to plastic competitors
Cons
- Air-filled tires can go flat (replaceable from Harbor Freight)
- Smaller 25-gallon capacity limits trip range
- Heavier price than Camco models
The Barker 4-Wheeler Tote-Along is the tank I recommend to anyone who has burned through two cheaper tanks and is ready to buy something that will last a decade. Barker has been making portable waste tanks since 2004, and the build quality reflects that experience. Owners on r/RVLiving and Jayco owners forums consistently describe the Barker as feeling commercial grade compared to the Camco Rhino, and the 4.5-star rating across 3,076 reviews backs that up.
The 25-gallon capacity is on the smaller side, but the 4-wheel design with front haul wheels changes the math. Because you can walk the tank like a wagon, the weight penalty of a smaller capacity is much less of an issue. You will need to make more trips than with a 36-gallon tote, but each trip is easier. The front wheels also let you position the tank under your RV’s dump valve without lifting, which is a back-saver if you are over 50 like me.
The most common complaint is the pneumatic tires going flat after a few seasons. Unlike the Camco Rhino’s no-flat design, the Barker ships with air-filled tires that can and do develop slow leaks. The good news is that the tires are standard sizes available at any hardware store, and replacement is a 10-minute job with a wrench. Some owners proactively upgrade to no-flat tires when they first buy the tank, which is a worthwhile modification.
The Barker is also one of the few RV portable waste tanks that is genuinely used in commercial applications. Food vendors, mobile concession operators, and even some construction sites use Barker tanks because the polyethylene body and steel axle handle abuse that would destroy a Camco or Thetford. If you are hard on your gear, the Barker is built to take it.
Why commercial-grade matters for RVers
The thicker polyethylene walls and steel hardware mean the Barker can sit outside year-round without UV degradation, and the heavier build reduces the wobble and flex you sometimes get with lighter totes when they are full. For full-time RVers, that durability translates to a tank you can hand down rather than replace every few years.
Upgrading the tires upfront
Consider swapping the pneumatic tires for no-flat solid tires when you first receive the Barker. It is a 30-minute job with basic tools, and it eliminates the only real weakness in the design. Several owners have documented this upgrade on YouTube.
6. Thetford SmartTote2 35-Gallon – Open-Top Design for Easy Cleaning
Thetford SmartTote2 RV Portable Waste Tote Tank – 4 Wheels – 35 Gallon – Thetford 40519 , Silver
35 gal capacity
4-wheel
Polypropylene
Open-top access
29 lb empty
Pros
- Lightest 4-wheel tank on the list at 29 lb empty
- Open-top design makes manual cleaning simple
- 4-wheel design walks easily when full
- Polypropylene body resists chemicals
Cons
- Only 3.7-star rating with quality complaints
- Cover lid and hose reportedly fragile
- Not as pictured (smaller front wheels on some units)
The Thetford SmartTote2 stands out in the RV portable waste tank category because of its open-top design, which is a major convenience for cleaning. Instead of unscrewing a cap and reaching through a 3-inch opening, you can lift the entire top lid and scrub the inside with a brush. For RVers who clean their tanks thoroughly between trips, that is a meaningful time-saver.
At 29 pounds empty, the SmartTote2 is the lightest 4-wheel tank on our list, which makes it easier to lift into a truck bed or storage bay. The 35-gallon capacity handles most RV black tanks in a single trip, and the 4-wheel design means you can walk the full load to a dump station without straining your back. The polypropylene body is also more chemical-resistant than HDPE, which is useful if you use strong tank treatments.
Unfortunately, the 3.7-star rating tells the rest of the story. Quality control on the SmartTote2 has been inconsistent, with multiple owners reporting the cover lid breaking within months and the integrated hose developing dry rot. One owner described opening the hose compartment on arrival to find the hose already separated from the tank. Thetford customer service is responsive, but for a premium-priced tank, that level of issue is frustrating.
There is also a noted discrepancy between the product photos and the actual product. Some units arrive with smaller front wheels than advertised, which affects maneuverability. If you are willing to potentially deal with warranty claims and part replacements, the SmartTote2 has the right design. For most buyers, though, the Camco Rhino line offers similar 4-wheel functionality with much better quality control.
When the open-top design is worth it
If you regularly clean your portable tank manually with a brush and want the easiest access to the interior, the SmartTote2 is the only tank on the market with that feature. For everyone else, the standard cap-and-rinse design on the Camco or Barker is faster and more reliable.
Inspect carefully on arrival
Test the lid, the hose, and the wheels before your first trip. If anything looks off, contact Thetford right away. Many owners who had initial issues were able to get replacement parts under warranty, but the hassle of being without the tank during a camping trip is real.
7. Camco Rhino 21-Gallon RV Tote Tank – Midsize Option for Couples
Camco Rhino 21-Gal RV Portable Tote Tank – Made in the USA
21 gal capacity
HDPE plastic
2-wheel
Compact 34.5 lb empty
Pros
- Compact footprint fits smaller storage spaces
- Same proven Rhino HDPE construction
- Lightest 2-wheel Rhino at 34.5 lb empty
- Handles typical 15-20 gal black tanks in one trip
Cons
- Too small for 30+ gal black tanks
- Still a 2-wheel design with tongue weight
- Requires more frequent dump trips
The Camco Rhino 21-gallon is the right answer for couples in smaller RVs who do not need the full 36-gallon capacity but want the same Rhino quality. At 34.5 pounds empty, it is the lightest 2-wheel Rhino in the lineup, and the 40.63-inch square footprint is noticeably more compact than the 28 or 36-gallon versions. For teardrop trailers, pop-up campers, and small travel trailers, that size difference matters.
The HDPE construction is identical to the larger Rhino models, so you get the same UV resistance, the same gate valve, the same integrated tank rinser, and the same included sewer hose. The 4.7-star rating across the Rhino line shows that Camco’s quality is consistent across sizes, which is not something every brand can claim.
The 21-gallon capacity is the limiting factor. If your RV has a 15-20 gallon black tank, you can dump in one trip. If you have a 30+ gallon black tank, you will need to dump partway through and refill the tote. For weekend campers who hit the dump station every 2-3 days, that is fine. For week-long boondocking trips, you will be making more trips than you would with the 28 or 36-gallon models.
Like the other 2-wheel Rhinos, the 21-gallon works best on flat, paved surfaces. The 2-wheel design and roughly 200-pound loaded weight are manageable on pavement but challenging on grass or gravel. If you camp mostly at developed campgrounds, that is not a concern. If you frequent rustic or off-grid sites, consider the Barker 25-gallon 4-wheel or save up for the Camco steerable Rhino.
Best fit for small trailers
The 21-gallon Rhino is the sweet spot for trailers with 15-20 gallon black tanks. It is large enough to handle a full dump and small enough to store in tight exterior compartments without giving up cargo space.
Capacity planning for week-long trips
If you camp for 5-7 days without hookups, calculate your daily black tank usage. Two adults typically use 1-2 gallons per day, so 21 gallons covers 10-21 days. For families or longer trips, step up to the 28 or 36.
8. Camco Rhino 15-Gallon RV Tote Tank – Budget Pick for Day Trips and Teardrops
Camco Rhino 15-Gal RV Portable Tote Tank – Made in the USA
15 gal capacity
Compact vertical design
31.5 lb empty
Ladder hook
Pros
- Lowest price in the Rhino lineup
- Compact vertical design saves storage space
- Lightest Rhino at 31.5 lb empty
- Same gate valve and rinser as larger Rhinos
Cons
- Only 15-gallon capacity limits use cases
- Vertical shape is harder to maneuver
- Not suitable for full-size RV holding tanks
The Camco Rhino 15-gallon is the most affordable entry point into the Rhino family, and it is the right tote tank for specific use cases like teardrop campers, van conversions, and short weekend trips with small holding tanks. At 31.5 pounds empty and a vertical 20.5-inch square footprint, it is the most compact tote in the lineup and the easiest to store in a small exterior compartment or even inside a van.
You still get the same Rhino quality, including the HDPE construction, gate valve, integrated tank rinser, and included sewer hose. The 4.7-star rating reflects owner satisfaction with the build quality, and reviews consistently mention the tank surviving drops, weather, and rough handling better than expected for the price.
The 15-gallon capacity is the obvious limit. A 15-gallon tote can only handle a 15-gallon black tank in one trip, which means it is not practical for full-size RVs with 25-40 gallon holding tanks. For teardrop campers with 5-10 gallon cassette-style tanks, or for transferring gray water from a small camper to a dump station, it works well. For anything bigger, you will spend more time emptying the tote than enjoying your trip.
The vertical orientation is also less stable than the wider, lower 2-wheel Rhino models, so you want to store it upright and tow it carefully. If you have a teardrop or a small camper and want a reliable tote at a budget price, the 15-gallon Rhino is the answer. If you have a travel trailer or larger RV, the 21, 28, or 36-gallon models are better investments.
Ideal use cases for the 15-gallon
Teardrop campers, van conversions, truck campers with small gray tanks, and emergency backup for larger RV systems. It is also a great starter tote for new RVers who want to learn the dumping process before investing in a larger tank.
Why the Rhino still beats cheaper brands
At this price point, you will find no-name tote tanks with similar gallon ratings. The Rhino’s HDPE construction and reliable gate valve are the difference. Forum users consistently report cheap totes cracking within a year, while the Rhino 15-gallon lasts for many seasons even with regular use.
How to Choose the Right RV Portable Waste Tank?
Picking the best RV portable waste tank comes down to matching capacity, wheel configuration, and build quality to how and where you camp. A weekend warrior at paved campgrounds has very different needs than a full-time RVer boondocking in the Rockies. Here are the factors that matter most.
Capacity: Match the tote to your holding tank
The single biggest mistake new RVers make is buying a tote that is too small. As a rule, your portable waste tank should be at least as large as your RV’s largest single holding tank, so you can complete a full dump in one trip. A 28-gallon tote handles a 25-gallon black tank perfectly. A 15-gallon tote requires multiple trips to empty a 30-gallon tank, which gets old fast.
For travel trailers with 20-30 gallon holding tanks, the Camco Rhino 28 or 36-gallon models are the sweet spot. For fifth wheels and motorhomes with 40+ gallon tanks, the 36-gallon 4-wheel steerable model is worth the upgrade. For teardrops and small campers, the 15 or 21-gallon Rhinos are appropriately sized.
Wheel configuration: 2-wheel vs. 4-wheel steerable
2-wheel totes are cheaper and lighter, but you balance the entire loaded weight on the tow bar. When that load hits 300+ pounds, you feel every bump and every slope. 4-wheel steerable totes let you walk the tank like a wagon, and the difference is night and day once you try it.
Forum consensus on r/RVLiving is clear: if you camp more than 10 nights a year or move campgrounds frequently, the 4-wheel steerable design is worth the price premium. If you only use the tote occasionally on flat pavement, the 2-wheel models are perfectly serviceable.
Materials and valve quality
UV-stabilized HDPE is the gold standard for portable waste tanks. It resists cracking from sun exposure and handles temperature swings without becoming brittle. Polypropylene is similar but slightly more chemical-resistant. Avoid tanks made from generic plastic blends with no UV protection. They will crack within a year of regular use.
The gate valve is the most failure-prone part of any tote tank. The Camco Rhino uses a heavy-duty gate valve that does not leak, while the Thetford SmartTote2 and some RecPro units have had valve and seal issues. Barker uses a similar high-quality valve design. Read recent owner reviews before buying, because valve quality is a common source of complaints.
Tongue weight and tow vehicle compatibility
A full 36-gallon tote weighs more than 340 pounds. If you plan to mount it on a hitch carrier or trailer tongue, you need to verify that your tow vehicle’s tongue weight rating can handle it. Many half-ton trucks are rated for 1,500-2,000 pounds of tongue weight, so a 340-pound tote is well within limits. Smaller SUVs and crossovers may have tongue weight ratings of 500 pounds or less, which means you need to carry the tote in a truck bed or cargo area rather than on a hitch.
Macerator pump compatibility
If you want to dump uphill or pump waste to a sewer cleanout that is more than 25 feet away, you need a tote tank that is compatible with a macerator pump. The Camco Rhino line is fully compatible with standard RV macerator pumps, and the pre-installed gate valve on the Rhino makes pump hookup simple. The Barker and Thetford tanks are also compatible, but you may need an adapter fitting.
How to Use an RV Portable Waste Tank (Step by Step)
Once you have the right tote tank, the dumping process is straightforward. Here is the step-by-step process I use after 50+ dumps across two camping seasons.
Step 1: Position the tote. Place the empty tote tank downslope from your RV’s dump valve. Gravity helps the waste flow downhill into the tote, and you do not want to lift a full tank up a slope at the end.
Step 2: Connect the sewer hose. Attach the included 3-inch sewer hose from your RV’s dump outlet to the tote tank’s inlet. Make sure the connections are tight and the hose is supported so it does not sag.
Step 3: Open the black tank valve first. Always dump the black tank before the gray tank. The gray water flowing afterward helps rinse the hose and tote interior, which reduces odor and buildup.
Step 4: Close valves and disconnect. Once the black tank is empty, close the RV valve, then open the gray tank valve. When both tanks are empty, close the gray valve, then close the tote tank’s gate valve. Disconnect the sewer hose.
Step 5: Use the tank rinser. Hook a garden hose to the tote’s integrated rinser and run fresh water through the tank for 30-60 seconds. This dramatically reduces odor and keeps the tank clean for next time.
Step 6: Tow or walk the tank to the dump station. This is where the 4-wheel steerable design earns its keep. Walk the full tote to the dump station, position it over the sewer inlet, open the gate valve, and let gravity do the work. Rinse the tote one more time before closing the valve and heading back.
Frequently Asked Questions
What is the best portable waste tank for an RV?
The Camco Rhino 36-Gallon is the best RV portable waste tank for most RVers. It combines a 36-gallon capacity (enough for a full black tank dump in one trip) with UV-stabilized HDPE construction, an integrated tank rinser, and a heavy-duty gate valve. With 4.7 stars across more than 27,000 reviews, it is also the most proven option in the category. Full-time RVers who want easier maneuverability should step up to the Camco Rhino 36-Gallon with steerable wheels.
What size portable waste tank do I need for my RV?
Match the tote capacity to your RV’s largest single holding tank. A 28-gallon tote handles most travel trailers with 25-30 gallon black tanks. A 36-gallon tote is better for fifth wheels and motorhomes with 40+ gallon tanks. For teardrops and small campers, a 15 or 21-gallon tote is appropriately sized. Buying a tote smaller than your holding tank means multiple trips to the dump station, which gets old fast on a long trip.
Can I use a portable waste tank with a macerator pump?
Yes, most quality portable waste tanks including the Camco Rhino, Barker Tote-Along, and Thetford SmartTote2 are compatible with macerator pumps. The Rhino’s pre-installed gate valve makes pump hookup especially simple. A macerator pump lets you pump waste uphill or to a sewer cleanout that is more than 25 feet away, which is useful at campgrounds with poorly positioned dump stations.
How much does a full RV portable waste tank weigh?
A full 36-gallon portable waste tank weighs more than 340 pounds (water weighs about 8.3 pounds per gallon, so 36 gallons is roughly 300 pounds of waste plus the empty tank weight). A 28-gallon tote weighs around 270 pounds full, and a 15-gallon tote weighs around 145 pounds full. This is why 4-wheel steerable models are popular for full-time RVers: balancing 300+ pounds on a 2-wheel tow bar is challenging, especially on uneven ground.
How often should I clean my portable waste tank?
Rinse the tote tank with fresh water after every dump using the integrated tank rinser. For deeper cleaning, scrub the interior with a tank brush and a mixture of water and RV-safe tank treatment every 3-4 dumps. If you store the tank for more than a month, add a small amount of holding tank treatment and water to keep the seals from drying out.
Final Verdict: Which RV Portable Waste Tank Should You Buy?
After comparing eight of the best RV portable waste tanks on the market, the Camco Rhino 36-Gallon remains our top recommendation for most RVers. It has the capacity to handle a full black tank dump in one trip, the HDPE construction to last for years, and the proven track record of more than 27,000 owner reviews. For full-time RVers or anyone who dreads the tongue-weight workout of a 340-pound 2-wheel tote, the Camco Rhino 36-Gallon with steerable wheels is the premium upgrade worth the extra cost.
If you want a smaller, lighter option for a small trailer or weekend trips, the Camco Rhino 28-Gallon is the best value in the lineup, and the 21 and 15-gallon models cover teardrop and small camper use cases. For buyers who want commercial-grade durability, the Barker 4-Wheeler Tote-Along has been a proven workhorse since 2004 and is worth the premium for full-time RVers.
No matter which tank you choose, an RV portable waste tank is one of the most practical upgrades you can make for your camping setup. It opens up thousands of campgrounds without sewer hookups, eliminates the hassle of repositioning your rig to dump, and makes the entire waste management process cleaner and easier. Pick the capacity that matches your holding tank, choose 4-wheel steerable if you can afford it, and you will wonder how you ever camped without one.