The Norwesco 1100 Gallon Plastic Water Storage Tank (SKU N-40704) is a vertical polyethylene tank standing 53 inches tall on an 87-inch diameter footprint. It holds 1,100 gallons of water for residential, agricultural, and light commercial storage. With a height-to-diameter ratio of about 0.61 - well under 1.0 - it sits broad and low, which keeps the center of gravity down, resists tipping better than a tall cylinder, and lets it clear barn rafters and low overhangs you would have to work around with a taller water storage tank. If you have been searching for a Norwesco water storage tank or a vertical storage tank that holds real volume without going up a ladder to reach the lid, this is the size that fits.
Will it work for your site
The tank is molded from polyethylene and carries a specific gravity rating of 1.0, which matches fresh water exactly. That 1.0 rating is the number to watch: this tank is engineered for water at a contents weight equal to water's density, not for heavier liquids. Filled to 1,100 gallons, the water alone weighs about 9,174 pounds, and that is also the maximum rated contents weight, so the structure is sized for a full load of water and nothing denser. Spread over the 87-inch-diameter base (about 41.3 square feet), a full tank bears roughly 222 pounds per square foot - about 1.5 psi - of uniform load, which is the figure to hand to whoever sizes your concrete pad. Run the Tank Sizing Calculator and the Tank Sizing Guide to confirm the height and footprint clear your space before you order, since a 53-inch tank fits places a tall tank cannot.
Spec it correctly before you plumb it
This listing does not pre-specify factory fittings, so fitting size, thread type, and gasket material are not set for you here. That means you supply the bulkhead fitting and gasket - confirm the molded outlet position, OD, and thread against the technical drawing on this page first so the gasket and bulkhead actually seal, or call 866-418-1777 and we will confirm the right fittings for your install before you cut any pipe. The single most common mistake on a 1.0 specific-gravity water tank is putting a heavier-than-water liquid into it: at SG 1.0 this tank is rated for water, and a denser contents would exceed the 9,174-pound rating. If you need to store a heavier-than-water liquid such as fertilizer, brine, or many chemicals, this is the wrong SKU - call 866-418-1777 and we will match you to a tank rated for a higher specific gravity. Keep this one on water and the math stays inside the envelope.
Putting it to use
An 1,100 gallon reservoir at this height suits rural fire-water reserves, rainwater and reuse aggregation, and general bulk water storage. If fire protection is the goal, our guide on fire-water reservoir tank design walks through NFPA 22 sizing and freeze protection. For greywater, rainwater, or HVAC condensate capture, see industrial water reuse tank topology. Before you set it, review concrete pad sizing for that 222 pounds-per-square-foot load, then run a hydrostatic test at first fill to verify pad settlement and fitting seals.
Freight
This tank ships by LTL freight, quoted live to your ZIP code. Norwesco molds this model at multiple plants nationwide, so we ship from whichever named location is nearest you, assigned at order time: Fairfield, TX; Griffin, GA; Hanford, CA; Lancaster, OH; Owego, NY; Shawnee, OK; Tooele, UT; or Washougal, WA. Shipping from the closest plant keeps your freight as short as possible. Get your exact cost with the Freight Cost Estimator, or call us at 866-418-1777 and we will quote it for you and confirm the right fittings before you order.
3 Year Warranty
