When outfitting an RV for extended trips or daily use, a dependable 20-gallon water tank is essential for potable water, cooking, cleaning, and showering. The following selections emphasize durability, ease of installation, and compliance with safety standards, helping you choose a tank that fits your RV size and plumbing setup. The list focuses on 20-gallon models and close equivalents to ensure options align with common RV configurations.
| Product | Brand | Approx. Capacity | Key Benefit |
|---|---|---|---|
| Ameri-Kart 20 Gallon RV Fresh Water Tank | Ameri-Kart | 20 Gallon | Durable, USA-made, multiple fitting options |
| classAcustoms | T-2000 | One (1) RV Fresh Water 20 Gallon Tank | classAcustoms | 20 Gallon | NSF-approved materials, versatile mounting |
| classAcustoms | RV Fresh and Gray Water Tank Combo Pack | classAcustoms | 20 Gallon & 25 Gallon | NSF-certified, dual-tank flexibility |
| ICON 12724 Fresh Water Tank | ICON | 20 Gallon | One-piece roto-molded design, durable |
| 21 Gallon RV Fresh/Gray Water Tank | A.A | 21 Gallon | Rotational molding, seamless construction |
Ameri-Kart 20 Gallon Fresh Water Tank
- 20 GALLON RV WATER TANK: Made in USA from BPA-Free materials; potable water for drinking, cooking, showering, and dishwashing in RVs, motor homes, trailers, campers, food trucks, and tiny houses.
- EASY TO INSTALL: Built-in fittings include two 1.5″ balloon-style threaded female NPT and two 0.5″ threaded female NPT; multiple installation options.
- OEM QUALITY CONSTRUCTION: Weather- and impact-resistant plastics ensure durability; sanitary and leak-proof to maintain clean water and hygiene; meets IAPMO standards.
Ameri-Kart 19 Gallon Fresh Water Tank
- 19 GALLON capacity close to 20 gallons for compact RV layouts; BPA-free for potable water use.
- Two 1.5″ NPT and two 0.5″ NPT fittings provide flexible mounting options.
- Durable, weather-resistant design that maintains hygiene and supports IAPMO standards.
classAcustoms | T-2000 | 20 Gallon RV Fresh Water Tank
- 20 Gallon Fresh Water Tank; NSF-approved materials ensure drinking water safety.
- Dimensions: 32.5″ long (excluding fittings) x 11.75″ x 11.75″; sits on any side and can be rotated to adjust height/width.
- Built-in fittings include two 1.5″ NPT and two 0.5″ NPT; seals are designed to remain watertight (remove membrane prior to use).
classAcustoms | RV Fresh and Gray Water Tank Combo Pack
- Combo Pack includes 20-Gallon and 25-Gallon tanks; NSF-certified MDPE resin with UV stabilization.
- Each tank provides two 1/2″ NPT fittings and two 1 1/2″ NPT fittings; fittings may be closed or open as described.
- Suitable for fresh or gray water storage; optimized for RV plumbing layouts requiring different tank sizes.
ICON 12724 Fresh Water Tank
- 20 Gallon capacity with 1/2″ fittings; one-piece roto-molded construction emphasizes durability.
- Designed for reliable potable water storage with a focus on sanitary integrity and leak resistance.
- Simple integration into RV water systems due to standard fittings and sturdy construction.
21 Gallon RV Fresh/Gray Water Tank
- 21 Gallon rotational molded tank; BPA-free material suitable for fresh or gray water usage.
- One-piece seamless construction reduces the risk of leaks and simplifies maintenance.
- Approximate dimensions: 39″ x 16″ x 8″ (excluding fittings); designed for straightforward RV installations.
Buying Guide: Key Considerations For Selecting A 20-Gallon RV Water Tank
Selecting a 20-gallon water tank for an RV involves balancing capacity, durability, and compatibility with your existing plumbing. Here are several points to consider from multiple perspectives:
- Material safety and cleanliness: Look for BPA-free materials and NSF approval where applicable to ensure safe drinking water storage. Tanks designed for potable water reduce the risk of contamination and odors.
- Fittings and compatibility: Check the number and size of fittings (commonly 1.5″ and 0.5″ NPT). Some tanks include closed or open fittings, which affects installation and use. Ensure fittings align with your pump, hose, and valves.
- Dimensions and orientation: The space under your RV or inside storage bays dictates tank dimensions. Some tanks are rotatable or have flexible mounting options, allowing you to adapt to unusual spaces.
- Durability and construction: Weather-resistant and impact-resistant plastics enhance longevity in outdoor RV storage. A leak-proof design helps maintain hygiene and water quality.
- Ventilation and pressure considerations: Non-pressurized tanks require venting during filling and use. Avoid sealed connections to prevent damage or tank failure.
- Brand reputation and certifications: Brands with NSF/ANSI certifications and IAPMO standards provide added assurance of safety and reliability for long-term use.
- Replacement and compatibility: If upgrading from an existing system, verify the available fittings, mounting patterns, and dimensions match your current plumbing layout.
- Cost-to-value balance: While price is a factor, prioritize tanks that offer durability, safety certifications, and flexible installation options to maximize long-term savings and reliability.
In sum, the best 20-gallon RV water tank should offer a balance of potable water safety, robust fittings, and adaptable mounting options that suit the specific space and plumbing of your RV. The selections above provide a range of capacities, configurations, and certifications to help you compare options effectively.