The Enduraplas 8000 Gallon Black Vertical Water Storage Tank is a polyethylene bulk vertical tank for large-volume water storage, rated to a specific gravity of 1.1. It holds 8,000 gallons on a 144 in x 144 in (12 ft x 12 ft) footprint and stands 142 in tall, built for sites that need serious water reserve in a single vessel - rural fire-water reservoirs, industrial process and reuse storage, irrigation, and non-potable bulk water holding. The black exterior blocks light penetration, which discourages algae growth in standing water compared with a translucent tank.
Will it work for your site?
This is a vertical storage tank sized for high-capacity service, so plan your foundation around the numbers, not estimates. Filled with water the tank carries roughly 66,720 lb of contents, and at its full 1.1 specific gravity rating it is engineered to hold up to about 73,392 lb of contents. That total load drives your pad design - a tank this size needs an engineered, level concrete pad, and our Concrete Pad Sizing for Above-Ground Polyethylene Tanks guide walks through the ACI 360R-10 framework and where the ACI 318 boundary begins. The 12 ft footprint and 142 in height also dictate access, overhead clearance, and crane or forklift staging for the offload. Confirm fitting locations and sizes against the technical drawing on this page before you plumb inlets, outlets, or an overflow.
Sizing and commissioning
If you are still settling on capacity, run your daily-demand and reserve math through our Tank Sizing Calculator and the Tank Sizing Guide - oversizing a vertical storage tank this large is an expensive way to find out you only needed 5,000 gallons. For rural and remote fire-protection duty, our Fire-Water Reservoir Tank Design guide covers NFPA 22 sizing discipline and cold-climate freeze protection. If this tank is part of a grey-water, rainwater, or HVAC-condensate program, the Industrial Water Reuse Tank Topology guide maps quality-banded storage trains. Once it is set, follow a disciplined fill: our Hydrostatic Test Methodology guide covers water-fill acceptance, pad-settlement monitoring, fitting leak detection, and hold-time math so you catch problems before the tank is in service.
The mistake to avoid
The 1.1 specific gravity rating is the number that trips people up. This tank is rated for contents up to 1.1 SG - water is 1.0, so you have a small margin, but it is not a chemical tank. Do not put a heavier-than-water fluid in it expecting the wall to hold; matching contents to the SG rating is what keeps the tank wall inside its design envelope for the life of the tank. The other common miss is conflating the offload with the foundation load. The offload itself is light - this is an empty poly tank when it arrives, so crane or forklift staging is only for placement - but the site has to support up to about 73,392 lb once the tank is filled. A soft, sloped, or undersized pad under more than 33 tons of filled tank is the fastest path to a stress crack.
Freight
This Enduraplas vertical storage tank ships LTL from the Converse, TX plant, with freight quoted live to your ZIP - get a number in seconds with our Freight Cost Estimator, or call 866-418-1777 to set up the delivery and offload. A tank this size needs a clear, accessible drop with equipment ready, so plan the receiving end before you order.
