The Enduraplas 6250 Gallon Dark Green Vertical Water Storage Tank is a polyethylene vertical tank built for high-volume bulk water storage at rural, agricultural, fire-protection, and industrial sites. At 147 inches tall on a 120 x 120 inch footprint, it is one of the larger single-tank options for sites that need real reserve capacity without stepping up to a tank farm. The dark green pigment is a working spec, not just a finish: an opaque, light-blocking wall suppresses algae growth in stored water far better than a translucent tank, which is why it earns its place on outdoor, long-dwell water service. The tank carries a 1.1 specific gravity rating, and that number drives how you size the pad and plan the fill.
Will it work for your site?
This is a 6,250-gallon vertical storage tank molded in polyethylene and rated to 1.1 specific gravity, so a full 6,250-gallon fill of any liquid up to 1.1 SG stays inside the tank's rating. Filled with water (1.0 SG) the tank carries roughly 52,125 pounds; at its maximum rated contents weight it reaches 57,338 pounds. That ~5,200-pound gap is real headroom: water leaves you well under the rating, and the tank is engineered to carry denser liquids up to its 1.1 ceiling. The full-water 52,125-pound figure is the load your foundation has to carry, so confirm your pad before delivery rather than after. The 120 x 120 inch footprint and 147-inch height tell you the clear ground space and overhead you need, and they double as your hard clearance numbers: a 120-inch-wide, 147-inch-tall tank has to clear gates, eaves, and route width on the way in. If you are weighing this size against a smaller or larger vertical storage tank, run your daily draw and refill cycle through the Tank Sizing Calculator and read the Tank Sizing Guide before you commit. The specific fitting schedule for this tank, inlet, outlet, vent, and manway, is shown on the technical drawing on this page; confirm those sizes match your plumbing before you order.
The foundation is where most of these go wrong
A tank this size lives or dies by the pad under it. The most common and most expensive mistake on a 6,250-gallon vertical is setting it on a foundation that is not flat, fully supported, and rated for the full 52,125-pound water load. A poured pad that settles unevenly puts bending stress into the tank wall it was never meant to carry. Walk through Concrete Pad Sizing for Above-Ground Polyethylene Tanks for the ACI framework before you order concrete. After the tank is set, do a staged water fill and watch for pad settlement and fitting leaks per the Hydrostatic Test Methodology for New-Install Tank Acceptance. Fill discipline at acceptance catches problems while they are cheap to fix.
Fire-water and industrial reuse fits
At 6,250 gallons, this tank is a workable building block for private fire-protection reserves and for water-reuse trains. If you are designing a rural or remote fire-water reservoir, the Fire-Water Reservoir Tank Design guide covers NFPA 22 sizing and cold-climate freeze protection. For grey-water, rainwater, or HVAC condensate aggregation, the Industrial Water Reuse Tank Topology guide shows how a tank this size slots into a quality-banded storage train.
This Enduraplas vertical water storage tank ships LTL freight from the plant in Converse, TX, quoted live to your ZIP code. At roughly 12,000 pounds of clearance-class oversize freight, plan for crane or forklift offload and a route that clears its 120-inch width and 147-inch height. Get a number for your delivery with the Freight Cost Estimator, or call 866-418-1777 and we will quote it and walk you through delivery and offload for a tank this size.
