The Enduraplas 3100 Gallon Dark Green Vertical Water Storage Tank is a 3,100-gallon polyethylene vertical tank built for bulk water storage where you need real volume in a compact footprint. It stands 103 inches tall on a 100 x 100 inch footprint - roughly an 8'7" tall, 8'4" square tank - so it holds substantial capacity without sprawling across your site. The dark green color is a good fit for outdoor installs: its opaque wall cuts light penetration to help slow algae growth, and the green tone blends into a yard, tree line, or rural property.
Will it work for your site?
This is a vertical water storage tank rated to a specific gravity of 1.1, which covers water and light water-based solutions up to that density. It is not rated for heavier chemicals such as acids or brines above 1.1 SG - this is a water tank, so keep it in water service. Filled with water, it carries roughly 25,854 pounds of contents, and it is rated to a maximum contents weight of 28,439 pounds; that headroom is why the 1.1 SG rating matters. Note that those figures are filled-contents loads for pad sizing, not shipping weight - the tank ships as an empty shell, which is what the freight quote is priced on. Those contents numbers drive everything underneath the tank: the pad has to carry the full load, not the empty shell. A 3,100-gallon vertical at full water weight is not a tank you set on bare or uncompacted ground. Plan a level, properly sized concrete pad that extends beyond the 100-inch base before delivery, and use our concrete pad sizing guide to spec it against the ACI 360R-10 framework. If you are still deciding between sizes, the Tank Sizing Calculator and Tank Sizing Guide help you match capacity to your real draw and refill cycle.
Common uses and what to plan for
At this volume, a vertical storage tank like this one fits rural and remote water supply, fire-water reservoir duty, and industrial water reuse trains that aggregate grey-water, rainwater, or HVAC condensate into quality-banded storage. If fire protection is the application, size the reserve against the right standard before you buy - our guide on fire-water reservoir tank design walks through NFPA 22 sizing discipline and cold-climate freeze protection. For reuse and aggregation setups, the industrial water reuse tank topology guide covers treatment-stage sequencing and how a polyethylene bulk storage tank fits the train. Because an 8'7" tall, 8'4" square tank will not clear a standard 7-foot gate or many barn doors, confirm your delivery path and gate width before you order.
The mistake to avoid
The most common error on a tank this size is filling it before the pad and the install are verified. Before you put it into service, run a controlled water fill and watch for pad settlement and fitting leaks during the hold - our hydrostatic test methodology guide lays out the fill discipline and hold-time math for new-install acceptance. Confirm the tank is plumb on a settled pad, that every fitting is sealed, and that the foundation is rated for the full 28,439-pound contents load. Refer to the technical drawing on this page for tank dimensions before you plan your plumbing, and call 866-418-1777 to confirm available inlet, outlet, and fitting configurations before ordering, since this listing does not enumerate ports.
This tank ships LTL freight from a single Enduraplas plant in Converse, TX, so freight scales with distance - a Northeast or West Coast delivery will cost more than one near Texas, and there is no flat "delivered" price. Get an exact number quoted live to your ZIP with our Freight Cost Estimator, or call 866-418-1777 and we will walk you through delivery, offload, and siting for a tank this size.
