The Camco Rhino 21-Gallon Portable RV Waste Tank, model 39002, is designed to transport wastewater from an RV to a dump station when the campsite sewer connection is too far away for a conventional sewer hose. Its wheeled design allows the filled tank to be rolled by hand or moved slowly with the removable tow adapter according to the manufacturer's instructions.
The kit combines a 21-gallon portable tank with waste-transfer and cleaning accessories. It can be useful at campgrounds without a sewer connection at every site, but owners must account for the tank's filled weight, the route to the dump station, and local campground rules before use.
Key Features
- 21-gallon portable wastewater capacity
- Large no-flat wheels for moving the tank over campground surfaces
- Removable steel tow adapter for approved low-speed transport
- Low drain opening and smooth interior to support emptying and cleaning
- Integrated tank rinser for routine cleanup
- Ladder hook and molded tie-down grooves for secured storage
- Included hose, fittings, caps, and waste-transfer accessories
RV Use Cases
- Transporting black or gray water to a dump station without moving the RV
- Managing wastewater at campsites that lack individual sewer connections
- Supporting longer stays when holding tanks need service before departure
- Providing a portable waste-transfer option when a standard sewer hose cannot reach
Common User Feedback
Pros:
- Owners commonly find the large wheels helpful when moving the tank across a campground.
- The included fittings and accessories create a more complete setup than purchasing a bare tank.
- The low drain opening and tank rinser can make emptying and cleanup more manageable.
Cons:
- A filled 21-gallon tank is heavy and must be moved cautiously.
- The tank requires dedicated exterior storage and secure tie-downs during travel.
- Uneven ground, steep grades, and poor dump-station access can make transport difficult.
- Waste-transfer equipment still requires careful connection, cleaning, and sanitary storage.
Best Practices
- Plan the fill level: Do not add more wastewater than you can safely move, control, and empty.
- Secure every connection: Check the tank cap, hose fittings, and valves before transferring waste from the RV.
- Move it cautiously: Follow the manufacturer's towing instructions, travel at very low speed, and avoid steep or uneven routes.
- Use dedicated sanitation equipment: Pair the tank with a secure RV sewer hose and keep every component separate from freshwater supplies.
- Clean after service: Empty the tank fully, use a dedicated flushing hose, rinse according to campground rules, and replace all caps before storage.
- Secure it for travel: Use the molded grooves or another appropriate restraint so the empty tank cannot shift or fall from its storage location.
Inspector's Note (RV Pro Solutions Insight)
My RV inspection training puts the focus on controlling the entire waste-transfer process, not just owning the right tank. Before using the Camco Rhino portable waste tank, I would confirm the tank capacity against the amount being transferred, inspect every cap and fitting, and plan a safe route to the dump station. A portable tote can prevent the inconvenience of moving the RV, but it also creates a heavy, mobile container of wastewater, so slow movement, secure connections, sanitary cleanup, and proper travel storage are essential.
