250 Gallon Plastic Vertical Water Storage Tank in Green

The Dura-Cast 250 Gallon Plastic Vertical Water Storage Tank (SKU 900250-1.2-GRN) is a freestanding polyethylene tank built for straightforward water storage where floor space is tight and vertical clearance is available. It ships in green and stands 85 inches tall on a 31-by-31-inch footprint, so it holds a full 250 gallons while occupying roughly six and a half square feet of ground.

Will it work for your site?

Two numbers decide most installs, and both are verified for this tank. The footprint is 31 by 31 inches; the height is 85 inches; and at capacity, water alone accounts for about 2,085 pounds pressing down on that base. That load has to sit on a flat, fully supporting surface — a poured pad or a level, load-rated platform, not bare or uneven ground. If you are laying a new base, our concrete pad sizing guide walks through the ACI framework for above-ground poly tanks. Not sure 250 gallons is right for your draw and refill cycle? Run the numbers with our Tank Sizing Calculator and the Tank Sizing Guide before you commit. Confirm the exact port and fitting layout against the technical drawing on this page so your plumbing lines up with the tank as built.

Common uses and setup

A vertical tank in this size range fits non-potable water storage, rainwater capture, and hauled-water or remote-site supply. For rural and off-grid fire protection, our fire-water reservoir design guide covers NFPA 22 sizing and freeze protection. If this tank is joining a reuse train — grey water, rainwater, or condensate — the water reuse topology guide shows how quality-banded storage stages fit together. After install, fill and hold the tank per our hydrostatic test methodology to catch pad settlement and fitting leaks before the tank goes into service.

The mistake to avoid

The most common misstep on a tall vertical tank is underbuilding the base. An 85-inch column of water on a 31-inch footprint is top-heavy and unforgiving — a base that dishes, tilts, or partially supports the tank puts uneven stress on the wall and can shorten its life. Level and fully support the pad first, every time. One more check for buyers considering anything other than water: this listing does not publish a specific-gravity rating, so confirm suitability with us before storing any liquid denser than water.

This tank ships by LTL freight, quoted live to your ZIP code — get an exact number with our Freight Cost Estimator or call us at 866-418-1777 and we will walk you through delivery and setup.