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Best Water Tanks

Durable water tanks for RV freshwater systems, from portable 5-gallon containers to large 550-gallon reservoirs. Ideal for camping, emergencies, and off-grid water storage.

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2-Pack IBC Tote Tank Adapter: 2" Male Camlock to 3/4" Female Garden Hose Fitting for 275-330 Gallon Tanks - Durable Polypropylene

This 2-pack adapter connects 2-inch male camlock outlets on 275-330 gallon IBC tote tanks to standard 3/4-inch female garden hoses for easy drainage. Its polypropylene build withstands outdoor conditions, with spare gaskets ensuring long-term reliability for gardeners and rainwater collectors.

  • Effortlessly drain 275-330 gallon IBC totes into garden hoses for efficient watering or transfer
  • Weather-resistant polypropylene handles sun, chemicals, and temperature extremes outdoors
  • Two spare gaskets included to prevent leaks and extend product life
  • Quick snap-on installation and easy disassembly saves time on every use
  • Precision fit for standard 2-inch male camlock IBC tanks

Durable polypropylene construction for reliable outdoor performance. Includes spare gaskets for hassle-free long-term use. Simple, tool-free installation and removal.

Fits only 2-inch male camlock to 3/4-inch female garden hose. Plastic material may not suit extreme heavy-duty industrial applications. Limited to specific IBC tote sizes.

Venustank 30 Gallon Portable RV Waste Tote Tank Kit with Wheels - Easy Steer Dump Tank for RVs

The Venustank 30 Gallon Portable RV Waste Tank is a complete kit for transporting waste from RVs to dump stations when far from sewer hoses. Its large solid rubber wheels and 22-inch tow bar enable easy steering like a suitcase or towing behind a vehicle, perfect for campers needing hassle-free mobility.

  • Seamlessly transport waste over any terrain with large solid rubber wheels and flexible tow bar
  • Complete ready-to-use kit includes all accessories for dumping, rinsing, and storage
  • Effortlessly empty and clean with gate valves, smooth interior, and integrated tank rinser
  • Securely store on RV ladder with built-in hook when not in use
  • Leak-proof and UV-resistant HDPE construction for long-lasting durability

Smooth, reliable mobility from oversized rubber wheels. All-in-one kit saves time and money on extra purchases. Simple cleaning and maintenance features.

Some assembly required upon arrival. Empty weight of 57.5 lbs may be heavy for solo handling. Large dimensions could limit storage in compact vehicles.

JZGRDN 5.5L Plastic Water Tank for Car Truck Air Parking Heater - Durable New Replacement

This JZGRDN 5.5L plastic water tank is a new replacement part compatible with car and truck air parking heaters. Its precise capacity and reliable fit make it ideal for vehicle owners maintaining efficient cabin heating systems.

  • Seamless compatibility ensures quick replacement for 5.5L air parking heaters in cars and trucks
  • Generous 5.5L capacity supports consistent heating performance during cold weather
  • Durable plastic build withstands automotive conditions for extended reliability
  • Brand-new condition delivers fresh performance without wear or defects
  • Simple single-piece package simplifies installation and storage

Exact 5.5L capacity matches original specs for optimal heater function. New construction guarantees quality and leak-free operation. Broad compatibility with car and truck air parking heaters.

Plastic material may be less impact-resistant than metal alternatives. Compatibility limited to specific 5.5L heater models. No additional fittings or hardware included in package.

GIGYES 7.4 Gallon Water Jug with Wheels & Folding Handle - Leakproof Portable Rolling Water Tank for Camping Hiking Emergency

This GIGYES 7.4 gallon water jug features wheels and a folding handle for easy transport on hikes and camping trips. Its leakproof design and sturdy BPA-free construction make it ideal for campers and emergency water storage needs.

  • Leakproof seal keeps water contained even upside down for 24 hours, preventing spills on rough trails
  • Sturdy HDPE plastic withstands dents and cracks while keeping water tasteless and safe
  • Built-in spigot and hose storage allow precise dispensing for handwashing or filling bottles
  • Wheels and folding handle enable effortless rolling transport for hiking and camping
  • Extra-large opening simplifies filling, pouring, and deep cleaning with included brush

Completely leakproof design tested for rough trails and inversion. Durable, thick construction resists damage from daily use. Portable wheels and handle reduce carrying effort.

Large capacity may feel heavy when fully loaded for solo users. Wheels best suited for smoother surfaces, not extreme off-road. Bulkier size compared to smaller jugs for minimalists.

classAcustoms T5000BPK 50 Gallon RV Fresh Water Tank Kit - USA Made NSF Certified Potable Storage for Campers Trailers Motorhomes

The classAcustoms T5000BPK is a 50-gallon rectangular RV fresh water tank made in the USA from NSF-certified medium density polyethylene, thicker than OEM for superior durability. RV owners, campers, trailer users, and tiny home builders should buy it for reliable potable water storage in drinking, cooking, and showering.

  • Enjoy safe potable water for drinking, cooking, and showering with NSF-certified food-grade materials
  • Experience superior durability from thicker-than-OEM construction that resists impacts and weather
  • Install quickly with included starter plumbing kit featuring standard NPT fittings
  • Save time sourcing parts as fittings match common hardware store components
  • Ensure hygiene with sanitary, leak-proof design meeting IAPMO standards

USA-made quality with NSF certification for potable water safety. Thicker walls for enhanced strength and longevity over OEM tanks. Easy installation via included fill hose, fittings, adapter, and clamps.

Requires initial cleaning to remove manufacturing debris before use. Additional plumbing parts may be needed based on specific setup. Strictly plastic fittings only; metal ones void warranty and damage threads.

Class A Customs RV Fresh & Gray Water Tank Combo Pack - 10 & 13 Gallon NSF Certified BPA-Free Holding Tanks

Class A Customs offers a combo pack of 10-gallon and 13-gallon RV water holding tanks for fresh or gray water use. Standout NSF-certified, BPA-free seamless construction ensures safety and durability for RV owners needing reliable storage.

  • NSF-certified materials safe for fresh drinking water, giving peace of mind for family RV trips
  • Versatile for fresh or gray water storage, maximizing utility in compact RV setups
  • Seamless one-piece design prevents leaks and bursts, ensuring long-lasting performance on the road
  • BPA-free and stain-resistant construction maintains hygiene without harmful chemicals
  • Built-in threaded fittings simplify connections for quick, hassle-free plumbing

NSF/FDA-approved materials safe for potable water. Combo pack provides two sizes for versatile RV needs. Durable, corrosion-resistant build withstands travel rigors.

No installation instructions included; professional tech recommended. Minor surface scuffs or dust from manufacturing require sanitizing. Must be vented and never pressurized to avoid damage.

HZGREEN 500L/130 Gallon Foldable Water Bladder - Portable Durable Tank for Camping, Irrigation & Emergency Storage

The HZGREEN 500L/130 gallon foldable water bladder is a large-capacity, portable storage tank made from double-layer 1000D PVC with stainless steel handles and garden hose compatibility. Campers, irrigators, and emergency preparers should buy it for reliable long-term water storage in harsh environments.

  • Quickly fill via direct garden hose connection with 3/4" brass fitting for effortless setup
  • Double-layer 1000D PVC withstands harsh conditions for long-lasting water storage reliability
  • Four stainless steel handles enable secure transport on trucks or vehicles
  • Massive 500L/130 gallon capacity handles irrigation, camping, firefighting, and cleaning needs
  • Folds compactly when empty for ultra-portable outdoor adventures

Exceptional durability from upgraded PVC material. Convenient hose-compatible inlet for fast filling. Reinforced stainless steel handles for easy carrying.

Cannot be moved when full to prevent damage. Extremely heavy when filled (over 1,000 lbs). Large size requires ample space for deployment.

Reliance Aqua-Tainer 7 Gallon Stackable Water Containers (Pack of 2) - Emergency Storage & Outdoor Essential

Reliance Aqua-Tainer 7 Gallon Rigid Water Containers (Pack of 2) offer a rectangular, stackable design for efficient storage during outdoor activities or home emergencies. Their hideaway spigot and screw-on vent provide reliable, spill-free water dispensing for campers, hikers, and preparedness enthusiasts.

  • Stackable rectangular shape maximizes storage space in garages, RVs, or closets
  • Molded contour grips ensure secure, effortless handling even when full
  • Hideaway spigot delivers on-demand water flow without leaks or mess
  • Improved screw-on vent allows smooth pouring without glugging or spills
  • Rigid construction withstands rugged outdoor use and long-term storage

Space-saving design stacks neatly when empty. Durable build ideal for repeated outdoor and emergency use. User-friendly spigot and vent for easy dispensing.

Rigid structure not collapsible for ultra-compact travel. Heavy when full, requiring two-person handling for mobility. Spigot may need occasional tightening to prevent drips.

WESTBAY 400L Foldable Water Storage Bladder Tank - 105 Gallon Portable Collapsible Water Bag for RV, Camping, Emergency, Outdoor Use

The WESTBAY 400L water storage bladder is a double-layered 1000D PVC tank with welded seams for leak-proof durability and 0.7mm thickened material for wear resistance. Campers, RV enthusiasts, and emergency preppers should buy it for its large-capacity, portable design with easy-fill ports and carrying handles.

  • Leak-proof double-layered 1000D PVC construction ensures safe water storage without spills
  • Holds 400L (105.7 gallons) for extended camping trips or emergency needs
  • Collapsible foldable design packs small for effortless transport and storage
  • Rust-proof valves and compatible hose ports make filling and draining quick and simple
  • Four stainless steel handles provide secure, easy carrying for one or two people

Exceptional durability from thickened 0.7mm PVC and reinforced seams. Massive 400L capacity meets high-volume water needs. Highly portable with foldable design and sturdy handles.

Vulnerable to punctures from sharp objects. Must be stored dry and folded to maintain condition. Requires careful handling to avoid seam stress.

UXPEYIC 3.17 Gallon BPA-Free Water Jug with Leak-Proof Spigot - Portable Camping Water Container for Hiking, Picnics & Emergency Storage

The UXPEYIC 3.17 gallon water container is a BPA-free, food-grade PC jug with a leak-proof spigot and extended hose for easy outdoor dispensing. Campers, hikers, and emergency preppers should buy it for its portable design, wide cleaning mouth, and versatility in storing water or grain.

  • Leak-proof spigot with extended hose ensures mess-free water dispensing anywhere outdoors
  • BPA-free food-grade PC material keeps water tasting fresh without toxins or odors
  • Comfortable handle and lightweight build make it effortless to carry on hikes or camping trips
  • 4-inch wide mouth allows thorough cleaning to maintain hygiene during extended use
  • Versatile for camping, picnics, vehicle storage, or household emergencies like disasters

Superior leak-proof design prevents spills during transport. Food-safe materials preserve water purity and taste. Easy portability with built-in handle.

Plastic build may dent under heavy impacts unlike metal alternatives. Fixed 3.17-gallon capacity limits volume for large groups. No insulation means water can warm up in hot conditions.

Whether you're gearing up for a cross-country RV adventure or preparing for unexpected emergencies, reliable water storage is essential for any freshwater system. Our Water Tanks category features a wide selection of high-quality, BPA-free containers designed specifically for RV Parts & Accessories, ranging from compact 5-gallon portables to massive 550-gallon reservoirs. These tanks ensure you have clean, accessible water wherever your travels take you.

Understanding RV Water Tanks

Water tanks are the backbone of any RV's plumbing and Freshwater Systems, holding potable water for drinking, cooking, and hygiene. Built from rugged polyethylene or food-grade plastics, they resist rust, corrosion, and UV damage, making them perfect for outdoor use. You'll find options tailored for RVs, like horizontal square designs that fit snugly under benches, as well as stackable barrels for emergency kits.

Key Features to Consider When Shopping

Selecting the right tank boils down to your needs. Here are the must-haves:

  • Capacity: From 4-8 gallons for small RVs or RO systems to 26-55 gallons for family camping, and up to 550 gallons for larger setups or farms.
  • Material and Safety: Look for BPA-free, food-grade plastics that are NSF-certified and safe for drinking water.
  • Design: Domed tops prevent water pooling, while portable models with spigots offer easy transport. Leak-proof caps and valves are crucial for RV plumbing integration.
  • Durability: UV-resistant and rustproof construction withstands harsh weather and rough roads.
  • Portability: Stackable or military-grade containers for camping and emergencies.

Brands like Buyers Products Company excel in heavy-duty poly tanks under the RomoTech line, offering Made-in-USA quality for agricultural or RV use.

Common Use Cases for Water Tanks

In the world of Plumbing for RVs, these tanks shine in multiple scenarios. Portable 5-gallon jugs from Scepter are favorites for boondocking, providing quick-refill options without permanent installation. Larger 55-gallon barrels, such as those from Augason Farms or WaterPrepared, suit home preparedness or extended off-grid trips. For reverse osmosis setups, compact 4-gallon pressurized tanks from APEC Water Systems maintain steady pressure.

Horizontal reservoirs like RomoTech's 30-gallon model fit seamlessly into RV undercarriages, maximizing space in your freshwater system. If you're expanding your setup, consider pairing with pumps or filters from our broader Automotive accessories.

Portable vs. Stationary Tanks: Which is Right for You?

Portable tanks, such as the Scepter 5-gallon military container or FastRack Hedpak, are ideal for short trips or emergencies—lightweight, stackable, and featuring spigots for easy dispensing. Stationary options, like WaterPrepared's 55-gallon blue stackers or Buyers Products Company's domed reservoirs, offer higher capacity for full-time RVers. Compare shapes: square for tight spaces, round for even weight distribution.

For those focused on durability, Scepter's rugged designs stand out in camping scenarios, while larger industrial tanks handle non-flammable liquids beyond just water.

Frequently Asked Questions

What size water tank do I need for my RV?

RV size dictates capacity: 20-40 gallons for small rigs, 50+ for larger ones. Consider daily usage—families may need 100 gallons total across gray, black, and fresh systems.

Are these tanks safe for drinking water?

Yes, most are BPA-free and food-grade. Always check NSF certification and avoid storing non-potable liquids unless specified.

How do I install a water tank in my RV?

Mount horizontal tanks securely under the chassis, connect to your pump via fittings, and ensure proper venting. Consult your RV manual or a professional for plumbing integration.

Can I use these for emergency preparedness?

Absolutely—stackable 55-gallon drums are popular for home kits, providing weeks of hydration in disasters.

What's the difference between pressurized and gravity tanks?

Pressurized tanks (like RO expansion models) maintain system pressure; gravity tanks rely on siphons or pumps for flow, suiting most RV freshwater setups.

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