100 Gallon Plastic Vertical Water Storage Tank in White

The Dura-Cast 100 Gallon Plastic Vertical Water Storage Tank is a compact, upright polyethylene tank built for water storage where floor space is tight. It stands 37 inches tall on a square 31 x 31 inch footprint, so it fits through most standard doorways and tucks into a corner, a utility closet, a pump house, or the bed of a truck without eating up a full pallet of space. If you are staging water for a rural site, a backup supply, irrigation, or a small hauling setup, the vertical profile keeps the footprint small while the 100-gallon volume does the work. As the SKU suggests, this is the natural, uncolored poly version of the tank.

Will it work for your setup?

The dimensions here are verified: 37 inches high, 31 inches wide, 31 inches deep, holding a nominal 100 gallons. Filled to capacity with water, plan for roughly 834 pounds sitting on that 31 x 31 inch footprint, so set it on a level, load-rated pad or slab that can carry the weight without flexing. A stable, fully supported base matters more on a narrow vertical tank than on a squat one, because the load is concentrated over a smaller area. If you are not sure 100 gallons is the right volume for your draw-down and refill cycle, run the numbers on our Tank Sizing Calculator or walk through the logic in the Tank Sizing Guide before you commit. Shoppers cross-shop this size as a 100 gallon vertical water storage tank and a compact plastic water tank; this one fills that slot with confirmed dimensions rather than guesswork.

Placement and use

Because the tank is taller than it is wide, both gravity-feed and pump-fed layouts benefit from the elevated outlet position a vertical tank gives you. Keep the tank out of direct freeze exposure where you can, or plan freeze protection into the install for cold-climate service. If this is part of a stored-water or reserve-supply plan, our guide to fire-water reservoir tank design covers sizing discipline and freeze-protection engineering for remote sites, and our water-reuse tank topology guide walks through grey-water and rainwater aggregation if you are building a reuse train.

One thing to get right

The common mistake on a compact vertical tank is under-building the base. At 834 pounds full, this tank needs continuous, level support across the whole 31 x 31 inch footprint. Do not set it on soil that can wash or settle, and do not bridge it across joists or blocks. Confirm the plumbed outlet and any fittings against the technical drawing on this page before you finalize your connection points, since fitting placement drives where your inlet and outlet plumbing has to land.

This tank ships LTL freight and is quoted to your ZIP so you only pay for the lane you actually use. Get a live number with our Freight Cost Estimator, or call 866-418-1777 and we will walk the delivery details with you before you order.