The 6 Best 45 Gallon RV freshwater Tanks (2023 reviews)

The tank is a must have add-on for your regular usage. It has a great web site as well that is easier to navigate than some of their competitors. The tank can be laid on any of its sides. It’s ribbed and made for RV tanks. The tank has no leaks and has nice fittings and is ready to install on a camper van. It will fit in a pick up truck bed.

These are thick plastic tanks, almost clear. The corners are vents.

Why We Like This:

Keeps water fresh and contaminate free
Constructed to fit most rv, camper, food truck, and concession trailer water bays
Larger applications provide the ability to stay out longer
Water supply for showers, kitchen, and sink

Best For boon docking: classacustoms Great Tank

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The largest classAcustoms carries at this time is a 100 gallon tank. This style of water tank must be vented allowing air to move in and out when filling and emptying the tank. The tanks will need to be braced and sit on a flat surface. The pre-tapped fitting locations are a little far from the side which would leave about 1.5" of water standing the bottom.

The tank full of water the sides bow out under the weight. They are threaded with plastic plugs. It's great for extra water for rv.

Why We Like This:

Better to work with port holes in corners
A quarter inch half inch larger really adds up for extra capacity
Good investment for long term

Best For Well: classacustoms 45 Gallon RV freshwater Tank

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The classacustoms 45 gallon rv freshwater tank is capable of outshining several other tank featured in this list in overall features for the price point. If you need a budget RV gray tank, this works. It's tough, thick plastic. It is made in a warehouse to clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process. It has a UV inhibitor to keep it from fading and becoming brittle when left in direct sun light.

The tank must be vented allowing air in and out during use. It is recommended to use a fill dish or other gravity process.

Why We Like This:

One of the new comers and featured product
Good investment for long term

Best With standard RV Tank: professional ez travel collection 45 Gallon RV freshwater Tank

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We would, of course, be remiss if we didn't mention professional ez travel collection 45 gallon rv freshwater tank for daily purpose.

Why We Like This:

One of the new comers and featured product
Good brand reputation

Best For concession Trailer: Toughgrade 45 Gallon RV freshwater Tank

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate tank. The toughgrade 45 gallon rv freshwater tank is exactly that - it's a simple tank that hits all the right notes.

Why We Like This:

One of the new comers and featured product
New and hot release

Best With sensor: Alpha systems 45 Gallon RV freshwater Tank

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We would, of course, be remiss if we didn't mention alpha systems 45 gallon rv freshwater tank for regular usage. Alpha Systems blow-molded HDPE tanks are an integral component to all recreational vehicles. It is designed to be laid horizontally, with the plumbing fittings positioned at the lowest point of the body and a small air vent at the top. The uniform thickness of the tanks makes them much more durable than the traditional rotational molded and thermoformed varieties.

The Tank is thinner than factory Rv tanks, but all of the connections and sensors are in place. There are a series of built in sensors for wiring up to your rv’s water level gauge. It does include the studs for the sensors.

Why We Like This: