The Norwesco 4995 Gallon Black Heavy Duty Vertical Storage Tank is built for serious bulk water storage, holding 4,995 gallons in a single vertical footprint of 142 inches by 142 inches and standing 89 inches tall. The black heavy-duty polyethylene shell carries a 1.9 specific gravity rating - meaning the shell is engineered to hold liquids up to 1.9 times the density of plain water, well above water's 1.0. That is real structural headroom: a Norwesco vertical storage tank sized for operations that need genuine capacity without sprawling across the yard, with rating to spare if you later store denser water-based liquids like brine or liquid fertilizer.
Will it work for your site?
Sizing is where most water-storage projects go right or wrong, so plan around the real loads. Full of water, this tank carries 41,658 pounds of contents; at its full 1.9 SG rating the maximum rated contents weight reaches 79,151 pounds. That weight has to go somewhere - a tank this size belongs on an engineered, level concrete pad, never on bare or compacted soil. Walk through the load math with our Tank Sizing Calculator and the Tank Sizing Guide before you pour anything. For the foundation itself, our guide on concrete pad sizing for above-ground polyethylene tanks lays out the ACI 360R-10 framework so the slab matches the 142-inch footprint and these contents weights.
Common applications and sizing notes
At nearly 5,000 gallons, this is a workhorse for bulk water reserves - rural and remote fire-water reservoirs, irrigation supply, and aggregated reuse storage. If you are designing private fire protection, our write-up on fire-water reservoir tank design for rural and remote sites covers NFPA 22 sizing discipline and cold-climate freeze protection. For collected-water and reuse projects, see our breakdown of industrial water reuse tank topology and our guide to rainwater harvesting and first-flush diverter sizing. Confirm inlet, outlet, and gasket sizes and materials against your fill and draw plumbing before you order fittings - call 866-418-1777 and we will verify what ships with this tank so you do not size plumbing against the wrong outlet.
The mistake to avoid
The single most common error on a tank this large is under-building the foundation. The 89-inch height over a 142-inch footprint means the loaded center of gravity sits high over a wide base, and at the full 1.9 SG rating you are supporting just over 79,000 pounds of contents. A pad that is undersized, unlevel, or poured on poorly prepared subgrade will let the tank settle, stress the shell, and shorten its life. Size and reinforce the slab to the real contents weight - 79,151 pounds at full 1.9 SG, not a round-number estimate. The foundation guide above exists for exactly this reason.
This Norwesco vertical storage tank ships LTL freight, quoted live to your ZIP code, from the Norwesco plant in Fairfield, TX - the nearest stocking point listed for this tank. LTL freight is quoted separately and is not included in the list price. Get a freight estimate with our Freight Cost Estimator, or call 866-418-1777 and we will quote your delivery and walk through site access for an oversized tank like this one.
