Discover top 20-gallon potable water tanks designed for RVs, campers, and tiny homes. This guide highlights five reliable options, detailing construction, fittings, and installation notes to help you compare durability and setup ease for your mobile lifestyle.
Summary of selected products:
| Product | Brand | Volume | Special Note |
|---|---|---|---|
| Ameri-Kart 20 Gallon WT-5546 | Ameri-Kart | 20 gal | Cube shape; IAPMO standard |
| classAcustoms T-2000 | classAcustoms | 20 gal | NSF approved materials |
| classAcustoms T-2000-BPK-PUMP | classAcustoms | 20 gal | Includes plumbing kit & 12V pump |
| Class A Customs UM-2000 | Class A Customs | 20 gal | UnderMount design |
| classAcustoms RV Combo Pack | classAcustoms | 20 gal & 25 gal | Combo pack; NSF certified |
Ameri-Kart 20 Gallon RV Fresh Water Tank
amer i-Kart 20 gallon fresh water tank is designed for potable water use in RVs, motorhomes, trailers, and campers. Constructed in the USA from BPA-free materials, it supports drinking, cooking, showering, and dishwashing. The tank’s cube shape facilitates compact installations in tight spaces. Built-in fittings include two 1.5″ balloon-style NPT connections and two 0.5″ NPT connections, providing flexible mounting options. The materials are weather and impact resistant, aiming for long-term durability and leak resistance. It meets IAPMO standards, ensuring sanitary water storage for mobile living. This tank supports diverse RV layouts thanks to its multiple fitting locations.
classAcustoms T-2000 20 Gallon Fresh or Gray Water Tank
This 20-gallon tank from Class A Customs supports fresh or gray water storage and is suitable for potable water safety when used appropriately. It is constructed from NSF-approved materials, designed to be sit on any side with a rectangular footprint for flexible installation. Key fittings include two 1.5″ FPT and two 0.5″ FPT connections, with guidance to avoid over-tightening and to use plastic fittings to preserve integrity. The tank’s dimensions (approximately 32.5″ L x 11.75″ W x 11.75″ H) enable versatile placement inside RV compartments while maintaining accessibility for maintenance.
classAcustoms T-2000-BPK-PUMP 20 Gallon Tank With Pump Kit
This 20-gallon Class A Customs tank includes a plumbing kit with a 12-volt water pump, enabling pressurized distribution of potable water. The tank maintains the same measurements and fittings as other 20-gallon models, with two 1.5″ NPT fittings and two 0.5″ NPT fittings. The kit-friendly design helps streamline RV water system upgrades, providing a practical solution for campers needing a ready-to-use setup. It is NSF-approved for safe water storage, and the non-pressurized tank emphasizes venting during operation to avoid pressure buildup.
Class A Customs UM-2000 UnderMount 20 Gallon Tank
The UM-2000 is designed for under-mount installation, offering a compact solution for space-constrained RV setups. It shares the 20-gallon capacity and NSF-approved materials, ensuring safe storage of fresh or gray water. Its dimensions support a range of mounting configurations, making it suitable for various RV models. Built-in fittings include two 1.5″ NPT and two 0.5″ NPT connections, and the tank is designed to be rotated or repositioned to optimize orientation. The product emphasizes durability and leak resistance to support reliable use during travel.
Class Acustoms RV Fresh & Gray Water Combo Pack
This combo pack includes 20-gallon and 25-gallon tanks, both NSF-certified, designed for fresh and gray water storage. The MDPE resin used provides UV stabilization and durable construction, with two 1.5″ FPT and two 0.5″ FPT fittings on each tank. The pack supports flexible RV plumbing projects, enabling simultaneous storage capacity for different water lines. Users should verify compatibility with existing fittings and ensure proper venting to avoid pressure issues. The NSF certification implies compliance with safety standards for potable water applications, contributing to overall system reliability.
Buying Guide: Key Purchase Considerations
- Material and safety: Look for NSF/ANSI certifications and BPA-free materials to ensure safe potable water storage and long-term durability in mobile environments.
- Fittings and compatibility: Check the size and number of built-in fittings (typically 1.5″ and 0.5″ NPT) and ensure compatibility with your existing hoses, valves, and pumps.
- Mounting options: Consider tank geometry (cube, rectangular, under-mount) and available mounting orientation to fit your RV layout and access space.
- Ventilation and venting: Non-pressurized tanks require venting during filling and use; avoid sealed connections to prevent pressure buildup.
- Space and dimensions: Measure available cabinet or undercarriage space and compare with tank dimensions (length, width, height) to avoid installation conflicts.
- Future expansion: If you anticipate adding more water capacity, consider combo packs or tanks with easy expansion compatibility and modular pump kits.
- Maintenance accessibility: Choose tanks with accessible openings and clear labeling for fittings to simplify cleaning and inspections on the road.
- Warranty and support: Favor brands offering clear warranty terms and clear installation guidance to minimize downtime during travel.
In RV water management, selecting the right 20-gallon tank hinges on space, mounting method, and whether you need a basic storage solution or a ready-to-run kit with a pump. This guide presents durable options from reputable brands, each offering robust fittings and NSF/IAPMO standards to support reliable potable water storage during road trips and extended stays.