Finding the right fresh water holding tank for your RV ensures you always have clean drinking water, reliable storage, and simple maintenance on the road. This guide showcases top-rated options from reputable brands, highlighting capacity, materials, fittings, and ease of installation. Whether you’re upgrading an older rig or outfitting a new one, explore tanks designed for potable water, reliable durability, and compatibility with common RV plumbing setups. Below is a quick summary table of the five selected products to help you compare at a glance.
| Product | Brand | Capacity | Key Benefit |
|---|---|---|---|
| Class A Customs T-6500 | classAcustoms | 65 Gallon | Large capacity, NSF materials, flexible orientation |
| Ameri-Kart WT-5553 | Ameri-Kart | 57 Gallon | USA-made, BPA-free, multiple fittings |
| Ameri-Kart WT-5450 | Ameri-Kart | 19 Gallon | Compact, easy install, potable water |
| Class A Customs Combo Pack | classAcustoms | 40 & 46 Gallon | Combo option, NSF-certified materials |
| Fresh Gray Water Holding Tank Combo | A.A | 16 & 21 Gallon | Combo set, durable polyethylene |
Class A Customs T-6500 65 Gallon RV Fresh Water Tank
The Class A Customs T-6500 is a 65-gallon fresh or gray water storage tank designed for versatility in RV plumbing. Constructed from NSF-approved materials, it is suitable for fresh drinking water and general storage. The tank can sit on any side, with a maximum thickness around 7/32 inch and built-in fittings including two 1.5″ female NPT and two 0.5″ female NPT connections. Refer to photos for exact dimensions (approximately 44.5″ long, 17.5″ wide, 19.5″ tall). To maximize sealing, membranes are removed before use, and fittings should be installed with compatible plastic or metal-threaded options to prevent damage.
Ameri-Kart 57 Gallon RV Fresh Water Tank
Ameri-Kart’s 57-gallon potable water tank is made in the USA from BPA-free materials, designed for drinking, cooking, cleaning, and showering in RVs. It offers flexible installation with built-in fittings including two 1.5″ balloon-style threaded female NPT standards and two 0.5″ threaded female NPT standards. The tank uses weather- and impact-resistant plastics to ensure lasting durability, while remaining sanitary and leak-proof. It meets IAPMO standards for safe water storage, making it a solid choice for larger RV setups that demand ample supply and robust construction.
Ameri-Kart 57 Gallon RV Fresh Water Tank (Alternate Model)
Note: Similar to WT-5553, this listing highlights Ameri-Kart’s continued emphasis on durable, BPA-free potable water storage with multiple fitting options. The configuration supports straightforward installation and dependable sanitation for long RV trips, with emphasis on leak-proof performance and compatibility with standard NPT fittings.
Class A Customs RV Fresh & Gray Water Combo Pack (40 & 46 Gallon)
This combo pack from Class A Customs includes 40-gallon and 46-gallon tanks, both NSF-certified MDPE with UV stabilization. The tanks feature built-in fittings including two 1.5″ balloon-style NPT standard connections (closed until inner membrane is removed) and two 0.5″ threaded NPT standards (open). The combination is ideal for RV users needing matching sizes for fresh and gray water systems, with emphasis on NSF compliance and durable construction for varied installations.
A.A Fresh Gray Water Combo Tank Set (16 & 21 Gallon)
This BPA-free set includes 16-gallon and 21-gallon tanks designed for fresh and gray water use with rotational molded construction. The tanks measure approximately 24″ x 15″ x 10″ for the 16-gallon and 39″ x 16″ x 8″ for the 21-gallon, with one-piece seamless construction to minimize the risk of seam failures. Suitable for RVs requiring flexible capacity mixing and straightforward installation, these tanks prioritize durability and ease of maintenance in portable water systems.
Buying Guide: Key Purchase Considerations
- Capacity needs: Choose a tank size based on your typical travel duration, water usage, and space constraints inside your RV. Larger holds more water, reducing frequent refills but requiring more mounting space.
- Material and safety: Look for NSF-certified MDPE or BPA-free plastics rated for potable water. These materials ensure safety for drinking, cooking, and cleaning.
- Fittings and compatibility: Verify the included fittings (NPT sizes) align with your RV plumbing and water pump setup. Consider tanks with built-in fittings to simplify installation.
- Orientation flexibility: Some tanks can sit on multiple sides or orientations, which helps with tight RV layouts. Check dimensions and mounting options before purchase.
- Durability and warranty: Choose models with UV stabilization, impact resistance, and warranty coverage to withstand road conditions and varying temperatures.
- Maintenance: Tanks with smooth interior surfaces reduce sediment buildup. Some products include accessories for sanitizing and deodorizing the system.
- Combo options: If you need both fresh and gray water tanks, consider combo packs to ensure compatible dimensions and materials across systems.
- Regulatory compliance: For potable water, ensure tanks meet IAPMO or NSF/ANSI standards to guarantee safety and code compatibility.
These options provide a range of capacities, installation styles, and material assurances designed for American RV setups. When selecting, compare the intended use (drinking water vs. gray water), ensure compatibility with existing plumbing fittings, and verify space availability in your RV’s storage compartments. Always follow manufacturer installation instructions to maintain water quality and system integrity.