Marine and RV Tanks

Marine and RV Tanks

Marine and RV Tanks

Marine and RV Tanks for Life on the Move

Let's be honest—the best part of life on the road or water is the freedom. The last thing you want to worry about is a problem with your plumbing. A cracked freshwater tank, a leaky seal, or a holding tank that just won't stop smelling can ruin a trip faster than anything. Too many builds and replacement jobs are compromised by flimsy, one-size-fits-all tanks that just aren't built for the job.

Marine and RV TanksMarine and RV Tanks

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That's why we're here. We provide a massive selection of Marine and RV tanks that are purpose-built for the vibrations of the highway and the stresses of the open water. These are the solutions you need for a reliable, leak-free, and long-lasting system.

Are you hoping for some serious fishing and hoping to keep your bait healthy and fresh? New to boondocking or considering an upgrade for your food truck water and waste tank? Or do you just need a dependable replacement marine tank for your boat? Our inventory has the fit and function you're looking for. We help you get the best storage system for your adventure.

Your Guide to Mobile RV and Marine Tanks: Fresh, Gray vs. Black Water

Choosing the right tank is simple once you know its job. Using the wrong one isn't just an inconvenience; it can be unsafe (for water) or just plain disastrous (for waste). Here's the straightforward breakdown of the three types of RV holding tanks and marine tanks you'll find.

Fresh Water Tanks (Potable Water)Fresh Water Tanks (Potable Water)

Fresh Water Tanks (Potable Water)

This is your "clean" water for drinking, cooking, and showering. These RV fresh water tanks and marine water storage tanks are built with one priority: safety. You'll often see them as a "white marine tank". Moreover, they are made from FDA-approved, food-grade, BPA-free plastic, which ensures your water stays safe and odor-free.

Best for: Sinks, cooking, faucets, drinking
Used in: RV kitchens, van conversions, food trucks,

Gray Water Holding Tanks Gray Water Holding Tanks

Gray Water Holding Tanks 

Gray Water Holding Tanks This tank is for the wastewater from your sinks and showers. It's the "soapy" water that doesn't contain solid toilet waste. In other words, anything that isn’t sewage.. While it's not as hazardous as black water, you still need a durable, seamless gray water tank from your RV waste tanks system to handle road vibrations and prevent messy leaks.

Best for: Shower drainage, sink runoff
Used in: RV bathrooms, marine heads, skoolie conversions

Black Water Holding Tanks Black Water Holding Tanks

Fresh Water Tanks (Potable Water)

This is the serious one, designed only for waste from your toilet. A "black marine tank" or "RV black water holding tank" is your best friend here. They are engineered with thicker, heavy-duty walls that are impermeable to waste. This construction is critical for locking in odors and preventing the cracks or leaks that can ruin your entire vehicle or vessel. When it comes to your marine holding tank for waste, you never want to cut corners.

Best for: RV toilets, boat heads
Used in: RVs, trailers, offshore vessels

What Are Marine and RV Tanks Used For?

Our tanks are the foundation for any reliable mobile plumbing system. They are engineered to fit the unique spaces of your vehicle or vessel and built to withstand the specific abuses of a life in motion. Here are the most common applications.

On the Water: Marine Applications

Fresh Water Tanks (Potable Water)Fresh Water Tanks (Potable Water)

Clean Water for Extended Trips

A boat needs a self-contained water system. Our marine water storage tanks are essential for providing safe, fresh drinking water, as well as water for galleys and showers, ensuring your comfort for a day or a week out on the water.

Gray Water Holding Tanks Gray Water Holding Tanks

Compliant Onboard Waste Management

"No Discharge Zones" are the law in many areas. A rugged, leak-proof marine holding tank is the only way to securely contain black water. Our thick-walled tanks are built to prevent odors and leaks, keeping you compliant and your boat fresh.

Keeping Bait Healthy for AnglersKeeping Bait Healthy for Anglers

Keeping Bait Healthy for Anglers

For the serious fisherman, a simple bucket just doesn't work. Our specialized bait wells are designed to circulate fresh water, creating a healthy, oxygen-rich environment that keeps your bait lively and effective all day long.

On the Road: RV & Mobile Applications

Off-Grid Camping & BoondockingOff-Grid Camping & Boondocking

Off-Grid Camping & Boondocking

The freedom of boondocking is 100% dependent on your water supply. Our food-grade RV water tanks are available in high-capacity models, giving you the reserves to stay off-grid longer, far from the nearest hookup.

Reliable Gray & Black Water Containment Reliable Gray & Black Water Containment

Reliable Gray & Black Water Containment

A leak or a bad smell is the fastest way to ruin a trip. Our heavy-duty RV waste holding tanks are rotationally molded in a single piece. This seamless design is far superior at locking in odors from your RV black water holding tanks and preventing the cracks that plague thinner tanks.

Custom Builds, UpgradeCustom Builds, Upgrade

Custom Builds, Upgrades

Factory tanks often crack or are simply too small. Our inventory is perfect for finding a replacement RV tank that fits your exact space. We stock every size imaginable for RV tanks to help you maximize capacity in your van, skoolie, or camper.

Why Shop RV and Marine Tanks from Tank Depot?

We’re not just another supplier; we’re your partner in building a reliable liquid mobile storage system. When you’re dealing with something as critical as your water supply or waste containment, you simply can’t afford to get it wrong. Here’s why experienced builders and DIYers trust us for their Marine and RV tanks.

The Industry's Largest SelectionThe Industry's Largest Selection

The Industry's Largest Selection

We stock hundreds of shapes and sizes. Whether you need a compact 10-gallon tank or a 100-gallon high-capacity model, we have the specific size marine tank or RV tank to fit the most unique and compact spaces.

Built-for-the-Road (and Water) DurabilityBuilt-for-the-Road (and Water) Durability

Built-for-the-Road (and Water) Durability

Our plastic RV tanks and marine tanks are rotationally molded. This process creates a seamless, one-piece tank with thick, uniform walls. The result? No seams to leak, no rust to worry about, and superior resistance to the cracks and punctures caused by vibration and impact.

Uncompromising Safety & Odor ControlUncompromising Safety & Odor Control

Uncompromising Safety & Odor Control

We make it simple. Our marine water storage tanks are made from FDA-approved, BPA-free resin for safe, taste-free drinking water. Our RV black water holding tanks are built extra-thick and are completely opaque, which blocks light to prevent algae and, most importantly, permanently locks in odors.

Complete System in One PlaceComplete System in One Place

Complete System in One Place

A tank is only as good as its connections. We don't just send you a box and wish you luck. We stock a full inventory of marine and RV tank accessories, including the right fittings, vents, hoses, and monitors to ensure your installation is professional and leak-free from the start.

Made in the USAMade in the USA

Made in the USA

We partner with leading U.S. manufacturers to bring you durable, food-grade plastic tanks that meet industry standards for potable and waste water storage. No shortcuts. No second-guessing.

Expert SupportExpert Support

Expert Support

Not sure which replacement RV tank will fit? Confused about fittings? Our team has seen every kind of custom build and repair job. We’ll help you get the exact right product the first time, saving you the headache and cost of a wrong order.

FAQs: RV Tanks

FAQs: Marine & Boat Tanks

Do You have Questions?Do You have Questions?

Do You have Questions?
We have the answers

Expert Guidance and Support Expert Guidance and Support

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