The Enduraplas 3000 Gallon Black Vertical Storage Tank (SKU THV03000B) is a polyethylene vertical storage tank built for bulk water and general liquid holding where a large single-footprint reservoir makes sense. It stands 125 inches tall on a 90-by-90-inch footprint and holds 3,000 gallons, so before you commit a site, confirm the vertical clearance and a level pad that carries the full load. The black exterior blocks light through the wall, which helps discourage algae growth in stored water compared with translucent tanks.
Will this vertical storage tank work for your site?
Filled with water this tank weighs about 25,020 pounds, and its wall carries a 1.9 specific gravity rating for a maximum rated contents weight near 47,538 pounds. That 1.9 SG is near the top of the range for poly vertical tanks — well above the common 1.5 SG water tanks — so this is already the heavy-duty wall, not a base model you'd need to upgrade from. The extra margin means it can hold denser liquids up to that 1.9 rating, but the pad and anchoring must be designed for the real filled weight of whatever you store. A 90-by-90-inch footprint concentrates a lot of mass on a small area, so pad design is not optional. Our Tank Sizing Calculator and Tank Sizing Guide help you match capacity to draw-down and refill needs, and the concrete pad sizing guide walks through the ACI framework for a base that will actually hold it.
Siting, fittings, and the mistake to avoid
At 125 inches the tank stands over ten feet tall, so check fill-line, ladder, and lid access up top, plus door and gate clearance for the delivery truck. On fittings: we don't publish a fixed outlet or manway schedule for this SKU online — outlet, bulkhead, and gasket specs are confirmed at quote so you get the correct configuration for your liquid. Any threaded bulkhead or flanged connection on a poly tank needs a gasket rated for the stored liquid, and that seal material is selected with the fitting rather than assumed. The most common error at this size is treating the 1.9 SG rating as a target instead of a ceiling: for water and lighter liquids you have plenty of headroom, but never store something denser than the wall is rated for, and never skip the pad because "it's only water" — over 25,000 pounds on a 90-inch square demands a properly sized, level foundation.
This 3000 gallon Enduraplas vertical tank ships by LTL freight from the nearest Enduraplas plant — Converse, TX or Neche, ND — with freight quoted live to your ZIP rather than built into the list price. Get a real number in seconds with our Freight Cost Estimator, or call 866-418-1777 and we'll work out the closest origin and best routing. If you're staging water for rural fire protection, the fire-water reservoir design guide covers how a black storage tank like this fits a private fire-protection stack, including freeze-protection planning for cold-climate sites in North Dakota and beyond.
