Choosing a reliable fresh water tank is essential for motorhomes, RVs, and trailers. The right tank should be BPA-free, durable, and sized to fit your rig while providing safe potable water for drinking, cooking, cleaning, and showers. Below is a curated selection of high-quality tanks designed for motorhomes and similar mobile living setups, along with practical buying guidance to help you pick the best option for your travels.
| Product | Brand | Capacity | Dimensions (approx.) |
|---|---|---|---|
| Ameri-Kart 36 Gallon RV Fresh Water Tank | Ameri-Kart | 36 gallons | 37″ x 16″ x 15″ |
| RecPro RV Fresh Water Tank 100 Gallon | RecPro | 100 gallons | Large capacity for long trips |
| Ameri-Kart 19 Gallon RV Fresh Water Tank | Ameri-Kart | 19 gallons | 30″ x 16″ x 10″ |
| classAcustoms | T-4000 40 Gallon Tank | classAcustoms | 40 gallons | 39.5″ x 13″ x 18″ |
| Class A Customs | 41 Gallon Fresh Water Tank | classAcustoms | 41 gallons | 71″ Long x 10″ x 14.6″ |
Ameri-Kart 36 Gallon Fresh Water Tank
Capacity and build are tailored for reliable onboard potable water. The 36-gallon tank is BPA-free and designed for drinking, cooking, showering, and dishwashing in RVs, motorhomes, trailers, or tiny houses. It features multiple installation options with built-in fittings, including two 1.5″ balloon-style NPT connections and two 0.5″ NPT connections. Constructed from weather- and impact-resistant plastics, this tank aims to resist leaks while maintaining hygiene and meeting IAPMO standards.
A.A 42 Gallon RV Fresh/Gray Water Tank
This 42-gallon tank provides ample capacity for extended trips. Dimensions are listed as 39″ x 18″ x 14″ (excluding fittings). It ships with a 1.25″ water fill inlet and three 3/8″ NPT connections. The tank is non-pressurized and requires venting. Made from high-quality polyethylene, the rotational-molded design emphasizes durability and sanitary, leak-free operation, suitable for fresh water storage in RVs and motorhomes.
RecPro RV Fresh Water Tank 100 Gallon
Designed for long trips, the 100-gallon capacity provides a steady supply of drinking water. This tank is specifically built for RVs and trailers, with sturdy polyethylene construction to endure travel wear. It is proudly made in the USA, aligning with quality and safety expectations for potable water storage in motorhomes and camping setups.
classAcustoms | T-4000 40 Gallon Tank
Made from NSF-approved materials, this 40-gallon tank is suitable for fresh or gray water storage. It features built-in fittings: two 1.5″ female NPT and two 0.5″ female NPT connections. The tank’s dimensions allow flexible placement on various RV layouts, and its UV-stabilized MDPE resin offers durability for outdoor conditions and extended camping seasons.
Class A Customs | 41 Gallon Fresh Water Tank
This 41-gallon tank from Class A Customs is designed for RVs and concession food trucks. It uses NSF-approved materials and can store fresh or gray water. The tank’s dimensions and configuration enable versatile mounting on a variety of RV layouts. Four installed fittings are arranged at one end for straightforward connections, and the tank can be oriented to fit different spaces in the vehicle.
Buying Guide
Key purchase considerations for motorhome fresh water tanks:
- Capacity needs: Assess typical travel duration and water usage to choose an appropriate tank size. Larger tanks reduce fill frequency but require more space and weight management.
- Material and safety: Look for BPA-free polyethylene or MDPE with NSF or IAPMO/NSF-ANSI certifications to ensure drinking-water safety and durability against wear, UV exposure, and temperature changes.
- Fittings and compatibility: Check the number and type of fittings (NPT sizes) and verify that they align with your plumbing layout. Built-in fittings can simplify installation.
- Pressurization and venting: Many tanks are non-pressurized and require venting. Consider whether you need an integrated vent or external venting strategy for your system.
- Dimensional fit: Measure available space in your motorhome or trailer to ensure the tank will fit without obstructing other systems. Tanks can often be oriented in multiple directions, but clearance is essential.
- Installation options: Evaluate whether you need top-fill, side-fill, or dedicated inlets. Some models offer multiple installation configurations for flexible mounting.
- Maintenance and hygiene: Favor tanks with sanitary design and leak-proof construction, and consider ease of cleaning when selecting a tank for daily potable water use.
- Warranty and origin: USA-made tanks can offer predictable quality and support. Review warranty terms and supplier reliability when possible.
In evaluating options, balance capacity with space, installation compatibility, and water safety standards to ensure reliable potable water for a motorhome or RV. The five selected products cover a range of capacities and mounting options to suit different vehicle layouts and travel plans.