20 Gallon RV Fresh Water Tank - Potable Water Storage for RVs

In this review of the 20 Gallon RV Fresh Water Tank the bottom line is straightforward: this cube-shaped tank is best for RV owners, camper converters and tiny house builders who need a dependable, sanitary potable water reservoir with flexible installation options. The reviewer found the tank's US-made, BPA-free construction and built-in fittings make it a practical, low-hassle choice for drinking, cooking, showering and dishwashing, and the IAPMO-compliant design provides confidence that the tank meets recognized safety standards.

Key Features

• Capacity: The 20 gallon volume supplies enough fresh water for short trips or moderate daily use in an RV or camper.
• Material: Made in the USA from BPA-free, weather-resistant plastic to keep stored water sanitary and free from taste or odor issues.
• Built-in fittings: Includes two 1.5 in balloon-style female NPT and two 0.5 in female NPT fittings that allow multiple plumbing layouts without heavy modifications.
• Durability: Impact-resistant construction and leak-proof seams hold up to common RV vibration and road use for reliable service.
• Installation flexibility: Cube shape and multiple fitting locations let installers place the tank in tight spaces in motorhomes, trailers or cargo conversions.

Who It's For

This tank is aimed at RV owners, motorhome renovators, trailer and camper converters, and tiny house builders who need a compact, code-conscious fresh water tank that is simple to install and maintain. Its dimensions and fitting locations suit those installing the tank in under-seat bays, compartments or custom conversions where a rectangular footprint fits better than round tanks.

It is less suitable for systems that require pressurizing the tank, for applications that need included mounting hardware or valves, or for users who expect the tank to arrive fully plumbed; this model ships without mounting hardware, gate valves, piping, hoses or additional fittings.

Pros & Cons

Pros

• US-made, BPA-free construction offers sanitary storage and peace of mind for potable use.
• Multiple built-in fittings simplify plumbing and provide installation options in tight spaces.
• Sturdy, impact-resistant plastic and IAPMO compliance give confidence in durability and safety.
• Cube shape maximizes usable volume for a compact footprint in conversions and RV bays.

Cons

• Does not include plugs, valves, hoses or mounting hardware, so buyers must source those items separately.
• Not designed to be pressurized and should not be hung by straps or carry loads placed on it.

Specifications

Capacity	20 gallons
Dimensions	21 in x 17 in x 14 in
Shape	Cube
Fittings	Two 1.5 in balloon-style female NPT, two 0.5 in female NPT
Material	BPA-Free, impact-resistant plastic
Standards	IAPMO certified, QAI Laboratories certified
Origin	Made in USA (Elkhart County, Indiana)

Our Verdict

The 20 Gallon RV Fresh Water Tank is a sensible, well-built choice for RV owners and DIY converters who need a compact potable water reservoir with flexible plumbing options. Given its US-made, BPA-free materials and IAPMO compliance, it represents solid value when paired with separately sourced fittings and mounting hardware.

Frequently Asked Questions

Does the tank come with mounting hardware?
No. The tank does not include mounting hardware, gate valves, piping, hoses or additional fittings; those must be purchased separately.

Can the tank be pressurized?
No. The tank is not designed to be pressurized and should not be used with pressurized systems.

How should the tank be maintained when not in use?
Empty the tank when not in use and clean it at least once per year to maintain sanitary water storage.