The Norwesco 100 Gallon Black Vertical Storage Tank is a compact, free-standing polyethylene tank built for above-ground water and liquid storage where space is tight and a small buffer volume is all you need. It holds 100 gallons, stands 43 inches tall on a 28 x 28 inch round footprint, and is molded in black polyethylene to a 1.5 specific gravity rating - the same vertical storage tank shape farmers, contractors, and rural property owners reach for when they want a reliable 100 gallon tank that sits flat on a pad and tucks into a corner. At 28 inches across, it clears most standard 30 to 32 inch doorways upright, which makes it practical for basement, shed, and utility-room installs. For the molded-in base detail and outlet placement, see the technical drawing on this page.
Will it work for your site?
Sizing is the first thing to get right. Filled with plain water, this tank carries roughly 834 pounds of contents; loaded to its full 1.5 specific gravity rating it can hold up to about 1,251 pounds of contents. Plan your stand, pad, and tie-downs around the loaded number, not the empty shell. The 28 x 28 inch footprint keeps the load concentrated, so a level, continuous-bearing surface matters - if you are pouring a slab, our concrete pad sizing guide walks through the ACI framework for above-ground poly tanks. Not sure 100 gallons is the right volume? Run your numbers through the Tank Sizing Calculator or read the Tank Sizing Guide before you commit.
Where this 100 gallon tank fits
The vertical profile makes it a natural fit for water storage, rainwater capture, hauling water, livestock supply, and small-site reserve storage. For rural fire-protection reserves and freeze-prone installs, the fire-water reservoir design guide covers NFPA 22 sizing discipline and cold-climate engineering. If you are aggregating grey water, rainwater, or HVAC condensate into a reuse train, the water reuse topology guide shows how a small vertical storage tank like this one slots into a quality-banded system. Where vertical clearance is limited, our Norwesco doorway tank sizing guide compares 100 to 1000 gallon options by application.
The mistake to avoid
The most common error on a small storage tank is treating the 1.5 specific gravity rating as a fluid-compatibility approval. It is not. The rating means the tank wall can structurally support contents up to 1.5 times the density of water - real value over a standard 1.0 SG water tank if you are storing a heavier, confirmed-compatible water-treatment liquid - but it says nothing about whether a given chemical attacks black polyethylene. This unit is set up for water service. Before you store anything other than water, confirm the liquid is compatible with the resin. Two more checks: this listing does not specify the outlet thread size or gasket material, so verify both against the technical drawing or by phone before you plumb it; and size your bottom-outlet support to the loaded weight - up to about 1,251 pounds at full rating, 834 on water - because that column of liquid puts real head pressure on the connection. Support your fittings and don't over-torque them.
Freight: This tank ships LTL freight from the nearest Norwesco plant to your ZIP. With 10 plants spanning Texas, Georgia, California, New York, Oklahoma, Iowa, Minnesota, Utah, Ohio, and Washington, nearly every U.S. region ships from a plant within one freight zone, which keeps your cost down. Get a live, ZIP-specific rate with our Freight Cost Estimator, or call 866-418-1777 and we'll quote the freight and confirm the right tank for your application.
