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RV Fresh Water Tanks

The Best RV Fresh Water Tanks for Life on the Road
When you're miles from the nearest hookup, clean, dependable fresh water isn't a luxury — it’s your lifeline. Whether you're building out a custom van, upgrading your travel trailer, or replacing a cracked tank in your motorhome, your system starts here....

At Tank Depot, we have one of the largest selections of food-grade, BPA-free RV water tanks available online — from compact 3-gallon tanks for minimalist builds to massive 200-gallon setups for extended off-grid travel. Each van tank is engineered for the demands of mobile living: lightweight yet durable, safe for drinking water, and designed to fit into tight, unconventional spaces. And because no two rigs are the same, many of our tanks come blank or semi-fitted, giving you the freedom to plumb your system your way — or take advantage of our custom RV fittings and accessories to get it done right the first time.

The Right Potable RV Water Tank for Any Build

Whether you're upgrading your current rig or building something from the wheels up, our RV fresh water tanks are built to serve a wide range of real-world, road-tested applications:

Motorhomes and Travel Trailers
Motorhomes and Travel Trailers

Provide clean water for daily use—drinking, cooking, dishwashing, and showers—during long-distance travel or extended stays.

Camper Vans and Van Conversions
Camper Vans and Van Conversions

Ideal for tight, custom-built spaces where a low-profile or compact RV water tank is essential for maximizing layout efficiency.

Fifth Wheels and Toy Haulers
Fifth Wheels and Toy Haulers

Ensure a high-capacity, secure water supply for larger RVs with multiple water outlets, helping you stay off-grid longer.

Off-Grid Cabins and Tiny Homes
Off-Grid Cabins and Tiny Homes

Serve as a reliable potable water storage tank in remote, plumbing-free environments where water access is limited.

Food Trucks and Mobile Kitchens
Food Trucks and Mobile Kitchens

Meet health department standards for sanitary water storage, providing a clean source for cooking, prep, and washing.

Horse Trailers and Livestock Transport
Horse Trailers and Livestock Transport

Store fresh water for animal hydration or cleanup needs when traveling to shows, races, or rural locations.

Emergency Water Storage at Home
Emergency Water Storage at Home

Dual-purpose tanks offer a safe backup water supply during storms, outages, or natural disasters.

RV Remodels and System Upgrades
RV Remodels and System Upgrades

Replace cracked or outdated tanks with FDA-approved RV fresh water tanks made to modern safety standards.

Why Choose Tank Depot’s RV Fresh Water Tanks?

Whether you’re navigating remote backroads or living full-time on the road, your water system needs to be dependable. At Tank Depot, we don’t just sell tanks—we engineer solutions that keep your RV running smoothly, no matter where you park it.

One-Piece, Seamless Construction
One-Piece, Seamless Construction

All of our RV water tanks are rotationally molded in one solid piece. This process eliminates seams—the weak points where cracks and leaks typically begin. The result? A road-ready tank that can take the bumps, vibrations, and stress of long-distance travel without compromising.

Food-Grade, BPA-Free Polyethylene
Food-Grade, BPA-Free Polyethylene

Our camper van tanks are manufactured using FDA-approved, BPA-free polyethylene that’s safe for storing potable water. You can count on your supply staying clean, odor-free, and free of contaminants—whether you're using it for drinking, cooking, or showering.

UV-Stabilized for Outdoor Durability
UV-Stabilized for Outdoor Durability

Many RV tanks are tucked away in undercarriages or mounted externally. That’s why our fresh water tanks include UV inhibitors, preventing material degradation from sun exposure—perfect for full-time RVers and anyone who camps in hot, sunny climates.

A Size for Every Setup
A Size for Every Setup

From 3-gallon tanks for van conversions to 200-gallon tanks for motorhomes, we offer one of the widest selections of RV fresh water tank sizes and shapes available online. Whether you're looking to save space or extend your water supply, we’ve got the right fit.

Expert Support You Can Call On
Expert Support You Can Call On

Our team doesn’t just know tanks—we know RV water and waste storage systems. Need help choosing the right RV fresh water tank replacement? Just ask. We’re here to help you make the right decision the first time.

Custom Fitting Options
Custom Fitting Options

No two RV plumbing systems are the same—and we respect that. You can order a blank tank and install your fittings where needed as you take advantage of our custom RV water tank fittings and accessories.

Ready for the Road? Start with a Fresh Water Tank You Can Trust

When you're living life on wheels, your fresh water tank isn’t just another part—it’s the heart of your entire system. Whether you're upgrading your RV water supply, replacing a cracked tank, or building a custom van from the ground up, we have the solution to match.

At Tank Depot, we make it easy to find the best RV tanks for fresh water storage—with the quality, customization, and support that RV owners count on. Our commitment is to provide a durable, food-grade water tank for your RV that you can install with total confidence, knowing your water will always be safe and taste-free. From compact setups to high-capacity rigs, our tanks are designed to go the distance.

Browse our full collection of RV fresh water tanks today, or get in touch for help selecting the right fit for your build. Whatever you’re driving—and wherever you’re going—Tank Depot keeps your water supply reliable, clean, and road-ready.

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Capacity Name Diameter Length Width Height SKU Price
Buy 32 Gallon Plastic RV Water Tank by Ronco Plastics for only $419.99 32 Gallons Buy 32 Gallon Plastic RV Water Tank by Ronco Plastics for only $419.99 Ronco Plastics 32 Gallon Plastic RV Water Tank 44.5 15.5 12.5 R-RVB449 $419.99
Buy 32 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 32 Gallons Buy 32 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 Ronco Plastics 32 Gallon Plastic RV Water Tank 48 20 8 R-RV69W $369.99
Buy 32 Gallon Plastic RV Water Tank by Ronco Plastics for only $311.44 32 Gallons Buy 32 Gallon Plastic RV Water Tank by Ronco Plastics for only $311.44 Ronco Plastics 32 Gallon Plastic RV Water Tank 60 16 8 R-RV52W $311.44
Buy 38 Gallon Plastic RV Water Tank by Ronco Plastics for only $399.99 33 Gallons Buy 38 Gallon Plastic RV Water Tank by Ronco Plastics for only $399.99 Ronco Plastics 38 Gallon Plastic RV Water Tank 70 16 8 R-RV53W $399.99
Buy 33 Gallon Plastic RV Water Tank by Ronco Plastics for only $399.99 33 Gallons Buy 33 Gallon Plastic RV Water Tank by Ronco Plastics for only $399.99 Ronco Plastics 33 Gallon Plastic RV Water Tank 61 22 7 R-RVB409 $399.99
Buy 34 Gallon Plastic RV Water Tank by Ronco Plastics for only $342.90 34 Gallons Buy 34 Gallon Plastic RV Water Tank by Ronco Plastics for only $342.90 Ronco Plastics 34 Gallon Plastic RV Water Tank 44 25 8 R-RVB529 $342.90
Buy 34 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 34 Gallons Buy 34 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 34 Gallon Plastic Marine and RV Water or Waste Holding Tank 23 20 17 TRI-2034 As low as$410.00
Buy 34 Gallon Plastic RV Water Tank by Ronco Plastics for only $399.99 34 Gallons Buy 34 Gallon Plastic RV Water Tank by Ronco Plastics for only $399.99 Ronco Plastics 34 Gallon Plastic RV Water Tank 34 26 9.5 R-RVB381 $399.99
Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $383.00 35 Gallons Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $383.00 Ronco Plastics 35 Gallon Plastic RV Water Tank 34 22 13 R-RV45W $383.00
Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $287.00 35 Gallons Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $287.00 Ronco Plastics 35 Gallon Plastic RV Water Tank 32.125 19.5 15 R-RV1W $287.00
Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $439.99 35 Gallons Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $439.99 Ronco Plastics 35 Gallon Plastic RV Water Tank 33.5 19 16 R-RV34W $439.99
Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $399.99 35 Gallons Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $399.99 Ronco Plastics 35 Gallon Plastic RV Water Tank 48 17 10 R-RVB147 $399.99
Buy 35 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 35 Gallons Buy 35 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 35 Gallon Plastic Marine and RV Water or Waste Holding Tank 48.75 23 8.5 TRI-2035-1 As low as$410.00
Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 35 Gallons Buy 35 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 Ronco Plastics 35 Gallon Plastic RV Water Tank 37.5 19 12 R-RV2W $369.99
Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $287.00 36 Gallons Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $287.00 Ronco Plastics 36 Gallon Plastic RV Water Tank 45 18.5 11.25 R-RV38W $287.00
Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $283.10 36 Gallons Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $283.10 Ronco Plastics 36 Gallon Plastic RV Water Tank 32 32 9.25 R-RVB383 $283.10
Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 36 Gallons Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 Ronco Plastics 36 Gallon Plastic RV Water Tank 48.375 14.375 13.25 R-RV6W $369.99
Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 36 Gallons Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 Ronco Plastics 36 Gallon Plastic RV Water Tank 30 22 14 R-RV7W $369.99
Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $419.99 36 Gallons Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $419.99 Ronco Plastics 36 Gallon Plastic RV Water Tank 30.5 21.5 13.75 R-RVB158 $419.99
Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $419.99 36 Gallons Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $419.99 Ronco Plastics 36 Gallon Plastic RV Water Tank 28.375 13.375 17.75 R-RVB254 $419.99
Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $419.99 36 Gallons Buy 36 Gallon Plastic RV Water Tank by Ronco Plastics for only $419.99 Ronco Plastics 36 Gallon Plastic RV Water Tank 46 36 6 R-RVB428 $419.99
Buy 36 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 36 Gallons Buy 36 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 36 Gallon Plastic Marine and RV Water or Waste Holding Tank 47 15 13 TRI-2036 As low as$424.17
Buy 37 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 37 Gallons Buy 37 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 37 Gallon Plastic Marine and RV Water or Waste Holding Tank 38 19 12 TRI-2037 As low as$457.92
Buy 37 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 37 Gallons Buy 37 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 37 Gallon Plastic Marine and RV Water or Waste Holding Tank 51.25 20.5 9.125 TRI-2037-1 As low as$457.50
Buy 37 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 37 Gallons Buy 37 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 37 Gallon Plastic Marine and RV Water or Waste Holding Tank 63 16 9 TRI-2037-2 As low as$457.50
Buy 38 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 38 Gallons Buy 38 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 38 Gallon Plastic RV Water Tank 37 28 9 R-RVB346 $469.99
Buy 39 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 39 Gallons Buy 39 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 39 Gallon Plastic Marine and RV Water or Waste Holding Tank 30 21.75 13.75 TRI-2039 As low as$457.50
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $301.98 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $301.98 Ronco Plastics 40 Gallon Plastic RV Water Tank 42 26.75 9.5 R-RVB222 $301.98
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 40 Gallon Plastic RV Water Tank 39 18 14 R-RVB309 $469.99
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $301.99 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $301.99 Ronco Plastics 40 Gallon Plastic RV Water Tank 37.75 22.25 12.625 R-RVB456 $301.99
Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 40 Gallons Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 40 Gallon Plastic Marine and RV Water or Waste Holding Tank 26 24 15 TRI-2040-2 As low as$448.33$448.33
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 40 Gallon Plastic RV Water Tank 29.875 20.875 16.625 R-RVB256 $469.99
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 40 Gallon Plastic RV Water Tank 54 20 9 R-RVB305 $469.99
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 40 Gallon Plastic RV Water Tank 28 23 16 R-RVB432 $469.99
Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 40 Gallons Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 40 Gallon Plastic Marine and RV Water or Waste Holding Tank 40 19.75 12.75 TRI-2040 As low as$448.33$448.33
Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 40 Gallons Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 40 Gallon Plastic Marine and RV Water or Waste Holding Tank 45 19.75 11.75 TRI-2040-4 As low as$448.33$448.33
Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 40 Gallons Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 40 Gallon Plastic Marine and RV Water or Waste Holding Tank 32 39 11 TRI-2040-B As low as$500.00
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $307.00 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $307.00 Ronco Plastics 40 Gallon Plastic RV Water Tank 60 20 10.5 R-RV10W $307.00
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $369.99 Ronco Plastics 40 Gallon Plastic RV Water Tank 40.5 24 10 R-RV17W $369.99
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 40 Gallon Plastic RV Water Tank 26.5 21.25 18 R-RVB252 $469.99
Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 40 Gallons Buy 40 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 40 Gallon Plastic RV Water Tank 59 13.75 12 R-RVB240 $469.99
Buy 40 Gallon Light Duty Polyethylene RV Fresh Water Tank by Ronco Plastics for only $469.99 40 Gallons Buy 40 Gallon Light Duty Polyethylene RV Fresh Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 40 Gallon Light Duty Polyethylene RV Fresh Water Tank 18 23.5 23 R-RVB221 $469.99
Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 40 Gallons Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 40 Gallon Plastic Marine and RV Water or Waste Holding Tank 25 22 18 TRI-2040-3 As low as$448.33$448.33
Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 40 Gallons Buy 40 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 40 Gallon Plastic Marine and RV Water or Waste Holding Tank 32 24 14 TRI-2040-5 As low as$448.33
Buy 41 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 41 Gallons Buy 41 Gallon Plastic Marine and RV Water or Waste Holding Tank by Trionic for only $0.00 Trionic 41 Gallon Plastic Marine and RV Water or Waste Holding Tank 27 20 17 TRI-2041-2 As low as$451.25
Buy 42 Gallon Plastic RV Water Tank by Ronco Plastics for only $264.24 42 Gallons Buy 42 Gallon Plastic RV Water Tank by Ronco Plastics for only $264.24 Ronco Plastics 42 Gallon Plastic RV Water Tank 36 25 12 R-RVB237 $264.24
Buy 42 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 42 Gallons Buy 42 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 42 Gallon Plastic RV Water Tank 46 18 13 R-RVB182 $469.99
Buy 42 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 42 Gallons Buy 42 Gallon Plastic RV Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 42 Gallon Plastic RV Water Tank 40 26.75 10 R-RVB380 $469.99
Buy 42 Gallon Light Duty Polyethylene RV Fresh Water Tank by Ronco Plastics for only $469.99 42 Gallons Buy 42 Gallon Light Duty Polyethylene RV Fresh Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 42 Gallon Light Duty Polyethylene RV Fresh Water Tank 24 22 20 R-RVB510 $469.99
Buy 42 Gallon Light Duty Polyethylene RV Fresh Water Tank by Ronco Plastics for only $469.99 42 Gallons Buy 42 Gallon Light Duty Polyethylene RV Fresh Water Tank by Ronco Plastics for only $469.99 Ronco Plastics 42 Gallon Light Duty Polyethylene RV Fresh Water Tank 24 24 19 R-RVB443 $469.99
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