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100 Gallon RV Water Tank 55" x 42" x 10"
Important: SPECIAL ORDER - 10 TANK MINIMUM. This item is available on special order only. This is a custom made tank and according to current manufacturer data, there is an estimated 6-12 week production timeframe.
PLEASE NOTE: Due to this being a custom order there are no returns and no refunds.
This tank is manufactured for you when the order is placed. Returns are not accepted on special order products like this one. Elkhart Plastic tanks are manufactured to meet quality and health safety standards. With fewer impurities, these tanks are strong enough to take the bumps and bangs without compromising the security of your fresh water storage. Elkhart Plastics uses a process called roto-molding in which high-density plastic is rotated and molded into shape. This process creates a seamless tank in which the walls are of equal thickness, with no weak spots to cause trouble later. It is this process that has earned Elkhart Plastics the reputation for quality tanks.
Unless otherwise specified in the tank print, this tank does NOT include any fittings. All RV tanks are custom built and there are many variations of fitting locations. Please note that if you want fittings for this tank you will need to provide a tank print schematic with the SKU number of the fitting(s) you want installed and the measurements for the exact location of that fitting.
The installation of the fitting requires a special spin welding process to ensure proper installation and a non-leaking tank. Professional installation IS recommended. We offer that service at an additional charge.
Premium FDA-Approved Material: Made from high-quality, durable polyethylene that’s fully approved for safe drinking water storage—better than many stock tanks installed in factory-built RVs.
Seamless One-Piece Construction: Engineered without seams or joints for superior strength and leak-proof reliability, outlasting and outperforming typical OEM tanks.
Stain, Corrosion, and Rust Resistant: Designed to stay clean and functional even after years of use, ensuring your water stays fresh and your tank stays dependable.
Versatile Compatibility: Ideal for RV enthusiasts, horse trailer owners, or marine adventurers looking for a long-lasting, hassle-free water storage solution.
Enhanced Durability: Built tougher than many standard factory-installed tanks, offering peace of mind whether you’re replacing an old tank or upgrading your setup.
| Material | Polyethylene |
|---|---|
| Construction | Seamless one-piece |
| Fda approval | Yes |
| Width (inches) | 42 |
| Height (inches) | 10 |
| Length (inches) | 55 |
| Capacity (gallons) | 100 |
- What is the capacity of the 100 gallon rv water tank? The tank has a capacity of 100 gallons.
- Is the 100 gallon rv water tank suitable for storing drinking water? Yes, it is made from premium FDA-approved polyethylene material, making it safe for storing drinking water.
- Are fittings included with this water tank? No, fittings are not included with the tank. You need to provide a tank print schematic with the SKU number and measurements for any fittings you want installed.
- Can this tank be returned if i am not satisfied? No, this is a special order item with a minimum order of 10 tanks, and it is custom made. There are no returns or refunds for this product.
- What is the manufacturing process used for this water tank? The tank is made using a roto-molding process that creates a seamless, durable tank with equal wall thickness and no weak spots.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

