The Enduraplas 1125 Gallon Dark Green Vertical Water Storage Tank is a polyethylene vertical water tank built for rural fire reserve, irrigation, rainwater aggregation, and bulk water storage where headroom is tight. It holds 1,125 gallons in an 85 inch diameter footprint (an 85 x 85 inch bounding box) and stands just 56 inches tall, so it clears a low eave, fits inside a barn bay, or rides on a trailer where a taller water storage tank column would not. Below are the three things that decide whether this vertical storage tank is right for your site: how it performs, how it ships, and the one mistake to avoid before you buy.
What it does and how it sizes
This is a Dark Green vertical water tank rated to a specific gravity of 1.1. Filled with plain water (specific gravity 1.0) the contents weigh 9,382 pounds, and the tank is rated to carry up to 10,321 pounds of contents. That gap is roughly 939 pounds, about 10 percent of density headroom above water, so the 1.1 rating already covers water-based liquids that run slightly heavier than water (such as many liquid fertilizers near 1.1 specific gravity) without stepping up to a heavier-wall tank. Plan your pad and fill discipline around those weight numbers, not around the gallon figure alone. The dark green color cuts light transmission to slow algae growth, which matters for irrigation reserve and rainwater that sits for weeks between draws.
Pad, sizing, and acceptance
Before the tank arrives, get the foundation right. Our Concrete Pad Sizing for Above-Ground Polyethylene Tanks guide walks the ACI 360R-10 framework against that full 9,382-pound water load; remember the 85 x 85 inch figure is the bounding box of an 85 inch diameter tank, so pour a round or 85-inch-plus square slab, not a tight square. If you are still choosing a size, the Tank Sizing Calculator and Tank Sizing Guide match capacity to draw rate and refill cycle. For rural fire-reserve duty, our Fire-Water Reservoir Tank Design guide covers NFPA 22 sizing and freeze protection; standing reserve water in a poly vertical tank is freeze-vulnerable in cold climates, so read the freeze-protection section if this tank will hold water through winter. After install, run the Hydrostatic Test Methodology procedure to confirm the pad settles evenly and fittings hold before you put the tank into service.
The mistake to avoid
Do not size the foundation off the empty tank weight. The decision number is the filled weight, 9,382 pounds of water, sitting inside an 85 inch diameter footprint. A pad that is too thin, unlevel, or undersized for that load is the most common cause of premature stress on a polyethylene vertical tank. Fitting sizes, inlet and outlet locations, bulkhead placement, and gasket specs are not listed in the spec data for this tank, so confirm them from the technical drawing on this page before you set your plumbing run, and make sure any gasket or seal you add is compatible with the stored liquid up to the 1.1 specific gravity rating.
This tank ships LTL freight from the Enduraplas plant in Converse, TX, quoted live to your delivery ZIP. Because it ships from a single Texas plant, LTL transit time and cost scale with distance from Converse, so pull your number early with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you. Listed before freight; LTL is quoted separately to your ZIP.
