The Norwesco 1505 Gallon Black Vertical Storage Tank is a polyethylene above-ground water tank built around a 60-inch diameter footprint and a 135-inch overall height. It holds 1,505 gallons and carries a 1.5 specific gravity rating, which is the structural number that matters most when you size it: this is a true bulk water vertical tank with wall strength to spare for fluids heavier than water. The black resin blocks light to limit algae growth in stored water, which makes it a practical pick for long-term storage, irrigation reserves, rural fire-water reservoirs, and water reuse systems. It ships from the Norwesco plant in Fairfield, TX, so for Texas and South-Central buyers the freight quote starts close to home.
Will it work for your site?
Plan your pad and your plumbing around the loaded numbers, not the empty shell. Full of water, the tank and contents weigh about 12,552 lb, and at the full 1.5 specific gravity rating the maximum rated contents weight reaches 18,828 lb. That load sits on a 60.0 x 60.0 inch footprint, so the bearing surface under the tank carries serious concentrated weight and the pad has to be engineered for it. One thing to note about the 1,505-gallon figure: that is nominal capacity, and a vertical storage tank has usable draw-down volume below the fill line and overflow. Before you commit, match this size to your real draw and refill cycle through our Tank Sizing Calculator and the Tank Sizing Guide so you size to deliverable volume, not the nameplate number.
Heavier-than-water service without an upcharge
The 1.5 specific gravity rating is not just pad math. It means this same Norwesco vertical tank is built to hold fluids up to 1.5 times the density of water without stepping up to a heavier-wall tank. If your application calls for a denser liquid rather than plain water, the wall strength is already there, and the 18,828 lb maximum rated contents weight is what that density ceiling looks like at full fill. Whatever you store, your foundation and anchoring should be sized to how you actually intend to fill it, not to water alone.
Pad, foundation, and anchoring
A vertical storage tank this tall and this heavy when full is unforgiving of a soft or uneven base. The full-water load alone is over six tons on a 60-inch footprint, and at roughly 135 inches tall on that 60-inch diameter the tank stands more than twice as tall as it is wide. That height-to-width ratio makes it sensitive to wind and to uneven loading when partially full, so set it on a level, fully supporting foundation and plan anchoring for your site's wind and seismic conditions. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework and where the ACI 318 boundary applies. If this is going into a rural fire-protection role, our write-up on fire-water reservoir tank design for rural and remote sites covers NFPA 22 sizing and cold-climate freeze protection.
The mistake to avoid
Do not undersize the foundation by sizing it to the empty tank or to water weight alone. If you store water you are at roughly 12,552 lb, but the tank is rated to carry up to 18,828 lb of denser contents, and your base, anchoring, and site prep should reflect how you actually intend to fill it. The second mistake is plumbing blind: confirm the inlet, outlet, overflow, and lid positions against the technical drawing on this page before you order, and dry-fit your manifold to those locations, because vertical-tank fittings are rarely where people assume they are. If you are folding this tank into a reuse or harvesting system, our pieces on industrial water reuse tank topology and first-flush diverter sizing show how this storage stage fits the rest of the train.
This Norwesco vertical storage tank ships LTL freight from the Fairfield, TX plant, quoted live to your delivery ZIP. Get a real number with the Freight Cost Estimator, or call 866-418-1777 and we will quote it for you. List price excludes freight, which is quoted separately to your ZIP.
