If you need a portable solution to move gray water or mix of gray and black water from your RV, these tanks offer wheels, handles, and sturdy construction for simple disposal at dump stations. This guide highlights options for different travelers—campers with limited hose reach, full-timers needing durability, and those prioritizing mobility. Below is a quick summary table of five top sellers to compare capacity, wheels, and portability at a glance.
| Product | Capacity | Wheels | ||
|---|---|---|---|---|
| Camco Rhino 15-Gallon Portable Tote Tank | 15 gallons | No-flat wheels | 31.5 lb | |
| Camco Rhino 28-Gallon Tote Tank | 28 gallons | No-flat wheels | 43 lb | |
| Camco Rhino 21-Gallon Tote Tank | 21 gallons | No-flat wheels | 34.5 lb | |
| YITAHOME 10.6 Gallon Water Tank | 10.6 gallons | 2 wheels | varies | |
| YITAMOTOR 40L Portable Water Tank | 40 liters (≈10.6 gallons) | Large wheels | varies |
Camco Rhino 15-Gallon Portable Tote Tank

The 15-gallon capacity suits RVs with modest waste volumes or short trips. Best for campers who need a compact solution that fits tight spaces due to its smaller footprint. It features large no-flat wheels for diverse terrain, an oversized handle for maneuvering, and a steel tow adapter for towing behind a vehicle. The unit is built from UV-stabilized HDPE to resist sun exposure. Use this when your dump station is within a manageable distance and you want quick, occasional waste transfers.
Best for: smaller RVs and weekend travelers who require easy, one-person transport. A limitation: lower capacity means more frequent dumps on longer trips.
Camco Rhino 28-Gallon Tote Tank

With a 28-gallon capacity, this tote tank is better for longer trips or larger RVs that produce more gray water. It uses no-flat wheels for reliable movement across gravel and grass and includes a steel tow adapter for easy towing behind trucks or golf carts. The dimensions and HDPE construction offer durability under outdoor use. Choose this if you need less frequent dumping on extended journeys and higher capacity in a single tote.
Best for: full-time travelers or families who generate more gray water. Caution: heavier when full, which may require a second person or more powerful pulling equipment.
Camco Rhino 21-Gallon RV Portable Waste Tank

This 21-gallon model balances capacity with a more compact size for maneuverability. It uses heavy-duty no-flat wheels and a low drain hole to facilitate straightforward dumping. The steel tow adapter enables towing behind a vehicle, adding flexibility for parking-lot or campsite use. Best for: those who want a mid-size solution that reduces frequent dumps while maintaining manageable weight. Limitation: mid-range capacity may still require planning for larger sites.
YITAHOME 10.6 Gallon Portable Water Tank

Designed for versatile use, this 10.6-gallon tank suits both freshwater and gray water storage. It offers two rolling wheels and a sturdy metal handle, aiding mobility for users who travel uneven terrain or need to move the tank by themselves. Its durability comes from durable PP material, with multiple outlets for thorough cleaning. Best for: light-to-moderate capacity needs and easier transport for solo travelers. A consideration: smaller capacity means more frequent emptying on long trips.
YITAMOTOR 40L Portable Water Tank

This 40-liter model (≈10.6 gallons) provides substantial capacity with rugged wheels and a solid handle for easier movement. It is built from durable PP and HDPE materials, designed to withstand outdoor conditions. Multiple outlets allow flexible filling and dumping, making it suitable for longer trips or campers with higher waste or water needs. Best for: campers who want a robust, higher-capacity option and are comfortable moving a larger unit. Limitation: heavier full load may require more effort to maneuver.
Buying Guide
- Capacity needs: Match tank size to typical trip length, campsite access, and how often you plan to dump.
- Mobility features: Consider wheels, handles, and tow adapters. No-flat wheels reduce flats, while larger handles ease maneuvering.
- Material durability: UV-stabilized HDPE or similar plastics resist sun exposure and weathering for outdoor use.
- Portability vs. capacity trade-off: Larger tanks save dumps but are heavier to move; smaller tanks are lighter but require more frequent dumps.
- Drain design: Look for low drain holes or efficient dump ports to minimize mess and speed up emptying.
- Multipurpose use: Some tanks can hold both gray and limited black water; verify compatibility with your setup.
- Towability: If you plan to tow, ensure your vehicle or cart has the appropriate hitch and weight capacity for the tank.
FAQ
- What capacity is best for weekend RV trips? A: A smaller model (around 15–21 gallons) is often sufficient for weekend stays with limited dump access.
- Are these tanks easy to move solo? A: Tanks with wheels and strong handles are designed for solo transport; heavier units may require assistance.
- Can these tanks handle both gray and black water? A: Some models are designed primarily for gray water; always check product specifics for compatibility with gray or mixed waste.
- What maintenance is needed? A: Rinse after dumps, ensure valves and drain holes are clean, and store in a shaded area to prevent UV damage.
- Do these tanks require special hoses? A: Standard sewer hoses and fittings are typically used; confirm the included accessories and compatibility with your setup.
- Is there a risk of odors? A: Using a tank treatment can help control odors, especially in longer trips or higher-use scenarios.