The top answer for buyers searching “rv portable holding tank 42 gallon” is to choose reliable, purpose-built tote tanks that combine easy transport with sturdy construction. This guide highlights 5 options centered around 42-gallon capacity and related uses, including fresh/gray water storage and large-wallon portable waste tanks. Suitable buyers include full-time RVers, seasonal campers, and families who need easier dumping at remote sites or larger water storage. The table below compares key options to help you pick the right model for your setup.
Product overview table
| Product | Capacity | Best For | Notes |
|---|---|---|---|
| Camco Rhino 36-Gallon Tote Tank | 36 gallons | Campers needing large-capacity waste transport | Great wheels and tow adapter; not 42 gallons but a common larger size option |
| RecPro RV 36 Gallon Portable Waste Tank | 36 gallons | RVers seeking easy emptying | Bright color for visibility; no-flat tires |
| Camco Rhino 28-Gallon Tote Tank | 28 gallons | Compact setups with good portability | Steerable front wheels |
| Camco 36 Gal Heavy Duty Rhino (2 Pack) | 36 gallons each | Bulk purchase for multiple sites | Includes essentials and ladder hook |
| 42 Gallon RV Fresh Water Tank (Ameri-Kart) | 42 gallons | Drinking/cooking water storage | Made in USA; BPA-free |
Camco Rhino 36-Gallon Tote Tank

Product highlights: 36 gallons, heavy-duty no-flat wheels, large handle, and built-in gate valve with a removable steel tow adapter. The tank measures 24 1/8” L x 14 3/4” W x 44 7/8” H and weighs 45 lb. It’s made from UV-stabilized HDPE for outdoor use. Best for RVers who need to move waste from a distant dump station and want confident towing behind a vehicle. A potential limitation is that it is slightly smaller than a 42-gallon need, so plan capacity accordingly if you frequently empty larger loads.
Who it’s best for: RVers needing robust mobility and dependable towing capability. Why selected: standout wheels and tow setup address tough terrains and far-dump scenarios. Caution: not a 42-gallon unit, so consider capacity needs for your setup.
RecPro RV 36 Gallon Portable Waste Tank

Product highlights: 36 gallons capacity, airless, no-flat tires, and a capacity indicator. It also includes gloves. Large ports facilitate easy emptying and quick cleanup. Best for campers who want a simple, visible fill level and straightforward maintenance. A limitation: capacity is 36 gallons, so plan for frequent dumps if your setup produces more waste per trip.
Who it’s best for: campers who prioritize easy visibility of remaining capacity and simple disposal. Why selected: durable construction with a bright color for quick site spotting. Caution: not a 42-gallon unit, so check your typical dump frequency.
Camco Rhino 28-Gallon Tote Tank

Product highlights: 28 gallons of waste capacity with steerable front wheels, large back wheels for any terrain, and a 44” tall profile. The tank weight is 53 lb, constructed from UV-stabilized HDPE. Best for users who need enhanced maneuverability and compact size on smaller sites. Limitation: slightly smaller than the 36-gallon options, which may require more frequent dumps if you generate more waste.
Who it’s best for: RV owners needing agile handling on uneven campsites. Why selected: steerable front wheels and robust build improve transportability. Caution: capacity is less than 36 gallons, so plan based on dump intervals.
Camco 36 Gal Heavy Duty Rhino (2 Pack)

Product highlights: two 36-gallon tanks with wheels, a low drain hole for complete emptying, and zinc-plated hardware to prevent rust. Includes a ladder hook for easy RV storage. Best for households or RVs that may need a second tote for larger trips or multi-vehicle setups. Limitation: identical capacity to the single unit; choose the two-pack when you need redundancy or multiple transfer points.
Who it’s best for: families or groups with multiple dump needs or storage constraints. Why selected: value-packed with essential accessories and durable hardware. Caution: heavier load and more storage space required when both tanks are carried.
Ameri-Kart 42 Gallon RV Fresh Water Tank

Product highlights: 42-gallon capacity for fresh water storage, rated for potable use, and IAPMO standards compliance mentioned in features. Made in USA with BPA-free materials. Best for RVers needing a large, reliable water reservoir for cooking, drinking, and cleaning. Limitation: this is a water tank, not a waste tote, so ensure you’re selecting the correct type for your needs.
Who it’s best for: owners prioritizing long-duration water storage without frequent refills. Why selected: large capacity and BPA-free construction. Caution: verify that the tank is used for potable water only and meets your installation requirements.
Buying Guide
What capacity fits your needs? Consider typical dump frequency and whether you primarily need waste transport or water storage. For waste: 28–36 gallons is common for portable totes; 42 gallons is a popular target but many models top at 36. For water: 42 gallons provides substantial storage but requires space and installation planning. How easy is it to move? Look for no-flat wheels, large handles, and optional tow adapters for towing behind a vehicle. Are there maintenance features? Large ports, easy-drain holes, and removable components simplify cleaning and upkeep. Do you need dual totes? A 2-pack can serve multiple sites or scenarios without reloading between trips. What about materials and durability? UV-stabilized HDPE and zinc-plated hardware resist sun exposure and corrosion. Is venting required? Non-pressurized freshwater tanks typically need venting and proper fittings for installation. Finally, verify compatibility with your RV’s ladder, hitch, or storage space to ensure a smooth fit and safe transport.
FAQs
- What is the typical capacity to look for in a portable waste tank? Answer: 28–36 gallons is typical, with 36 gallons being a common balance of capacity and portability.
- Can I use a 42-gallon tank for waste? Answer: Some models are 42 gallons, but many popular portable waste totes max at 36 gallons. Check the product specifications.
- Are portable waste tanks easy to tow? Answer: Yes, most include tow adapters and wheels; ensure your vehicle or golf cart can safely tow the load.
- Is a 42-gallon water tank suitable for RV use? Answer: Yes, if you need substantial potable water storage; ensure proper venting and fittings for installation.
- What maintenance helps extend tank life? Answer: Regularly rinse interior, clean seals, check for leaks, and store on a level surface away from direct sunlight when not in use.
- Which option is best for remote dumps? Answer: Tanks with larger wheels and sturdy tow adapters perform best on uneven or distant dump stations.