The Enduraplas 1125 Gallon Black Vertical Water Storage Tank (SKU TLV01125B) is a polyethylene tank built for bulk water storage on agricultural, fire-reserve, rural, and industrial sites. It carries a 1.1 specific gravity rating, so it is sized for water and other water-density contents, and the black exterior blocks light to discourage algae growth in stored water.
Will this tank work for your install?
Capacity is 1125 gallons on an 85 x 85 inch footprint. The wide, square footprint keeps the loaded center of gravity low and stable, which helps on open, windy sites and where overhead clearance is limited. Plan your pad for the fully loaded condition: filled with water this tank carries roughly 9,382 lb, and at its full 1.1 SG rating the contents can reach about 10,321 lb. Size and pour your foundation for that loaded weight, not the empty shell. If you are still settling on capacity or pad dimensions, run the numbers with our Tank Sizing Calculator and the Tank Sizing Guide first, and review Concrete Pad Sizing for Above-Ground Polyethylene Tanks for a level, properly rated base. For fitting and outlet locations, see the technical drawing on this page before you finalize your plumbing.
Specs at a glance
Capacity: 1125 gallons. Footprint: 85.0 x 85.0 inches. Material: polyethylene. Color: black. Specific gravity rating: 1.1. Full-water weight: about 9,382 lb; maximum rated contents weight: about 10,321 lb. As a vertical storage tank, it fits water storage duty from rural and remote fire-water reserves to aggregated water-reuse trains. One honest limit to know up front: the 1.1 SG rating caps usable contents at roughly water density, so if you plan to store anything heavier than water, choose a higher-SG-rated tank instead of this one.
The mistake to avoid
The most common error on a tank this size is under-building the foundation and skipping the commissioning fill. Confirm your pad is rated for the loaded weight above, then bring the tank into service with a controlled water fill while you watch for pad settlement and any fitting weep. Our Hydrostatic Test Methodology for New-Install Tank Acceptance walks through fill discipline, settlement monitoring, fitting leak detection, and hold-time math. If this tank anchors a private fire-protection setup, the Fire-Water Reservoir Tank Design guide covers NFPA 22 sizing and cold-climate freeze protection, and reuse-oriented installs can reference our Industrial Water Reuse Tank Topology guide.
This Enduraplas vertical ships LTL freight from a single fulfillment point in Converse, TX, quoted live to your ZIP, so your freight number won't shift by origin on this roughly 10,000 lb loaded purchase. Get your number with the Freight Cost Estimator, or call 866-418-1777 and we will quote it and help confirm this tank is right for your site.
