The Norwesco 15,000 gallon vertical liquid storage tank is built for large-scale bulk water: rural fire reserve, irrigation supply, agricultural holding, and process-water service that needs serious volume in a single molded polyethylene vessel. Known facts up front: 15,000 gallons of capacity, roughly 125,100 lb on the pad when full of water, and LTL freight from a five-plant Norwesco network. This is the no-fittings configuration, so you specify and locate your own outlet, fill, and vent penetrations instead of working around factory-cut ports. See the technical drawing on this page for exact dimensions and base diameter.
Will it work for my site?
This is a Norwesco vertical storage tank rated for water service (specific gravity 1.0). A full water column already loads the base at about 125,100 lb, so the foundation and siting decisions matter as much as the tank itself. If you intend to store a liquid heavier than water, do not push this tank past its rating — call 866-418-1777 and request the chemical or higher-SG vertical equivalent, or ask for this model's stamped SG rating before ordering. To match the tank to your real draw and refill cycle, run the numbers through our Tank Sizing Calculator and review the Tank Sizing Guide.
Fittings, venting, and foundation
Because this tank ships without fittings, plan your penetrations before delivery: you supply and install your own bulkhead fittings, gaskets, and a properly sized vent. Venting is not optional on a tank this size — a sealed 15,000 gallon vessel can collapse under vacuum during drawdown, so size the vent to your maximum outflow rate. On the foundation side, a tank holding 125,100 lb of water needs an engineered, level base, typically a properly sized concrete pad. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework so your pad carries the loaded weight.
Application guides
If this tank is going into a rural or remote fire-protection role, the fire-water reservoir design guide covers NFPA 22 sizing discipline and freeze protection for cold-climate service. For grey-water, rainwater, or HVAC condensate aggregation at this scale, see our breakdown of industrial water reuse tank topology. A full deep-dive on this exact tank lives in our 15,000 gallon vertical liquid storage tank buyer's guide.
The mistake to avoid
The two most common errors on a tank this large are underbuilding the foundation and skipping the vent. A pad sized for an empty shell will not hold 125,100 lb of water, and a sealed tank with an undersized vent risks structural collapse during draindown. Get the base right, vent it properly, and confirm your SG before you fill.
This tank ships LTL freight from the nearest Norwesco plant in our network — Albertville, AL; Fairfield, TX; Hanford, CA; St. Bonifacius, MN; or Washington Court House, OH — and freight is quoted live to your ZIP. A 15,000 gallon tank is an oversized LTL load, so delivery requires offload equipment and clear site access: call 866-418-1777 to confirm the nearest shipping point, delivery access, and lead time before you order. Get an instant estimate with our Freight Cost Estimator. Listed before freight; freight quoted to your ZIP.
