The Norwesco 15000 Gallon Black Vertical Storage Tank (SKU 43821B) is the tank you spec when a job needs serious bulk water reserve in a single footprint. It holds 15,000 gallons in a black polyethylene shell that stands 186 inches - 15.5 feet - tall on a 165 x 165-inch base, roughly 13.75 feet square. Norwesco molds this Norwesco vertical storage tank at four plants, so where it ships from depends on your delivery ZIP.
Will this tank work for my site?
This is a large vertical tank, and the numbers matter before you pour a pad. Filled with water, the tank and contents weigh about 125,100 pounds. The shell carries a 1.5 specific gravity rating, meaning it is built to hold contents up to 1.5 times the weight of water - a maximum rated contents weight near 187,650 pounds. SKU 43821B is the heavier-duty SG-1.5 build, so the rating headroom is already in this model; if your application needs a higher specific gravity than 1.5, call us rather than assume this shell covers it. Plan the foundation for the real load you intend to put in it: a flat, level, fully supporting pad is not optional at this size, and you will want delivery and overhead clearance that accommodates a 15.5-foot-tall, ~13.75-foot-square tank. Our Concrete Pad Sizing for Above-Ground Polyethylene Tanks guide walks through the ACI framework for getting that pad right, while the Tank Sizing Calculator and Tank Sizing Guide help confirm 15,000 gallons matches your draw and refill cycle.
How does it ship, and what will freight cost?
A tank this size ships LTL, quoted live to your ZIP. Norwesco produces this model at four plants - Albertville, AL; Fairfield, TX; St. Bonifacius, MN; and Washington Court House, OH - and the plant nearest your delivery ZIP affects both freight and lead time, so the routing matters in two ways. Because a 15,000-gallon vertical tank is an oversized load, the rate swings widely by distance and delivery conditions; get a real number before you budget. Run your ZIP through the Freight Cost Estimator or call 866-418-1777 and we will quote it and confirm which plant fills your order. Plan delivery access too: the equipment needed to offload a tank this tall and heavy needs room to maneuver.
The mistake to avoid
The biggest error on a tank this large is under-building the foundation or reading the 1.5 specific gravity rating as a license to fill it with anything. That rating is a structural ceiling, not a chemical clearance - it tells you the shell can carry heavier-than-water contents, but it says nothing about whether the resin resists a given chemical. This SKU is sold for water service. The inlet, outlet, and manway configuration is verified per unit, so confirm fitting locations and sizes against your plumbing plan before the tank arrives - call 866-418-1777 to check the configuration on your unit rather than assume a layout. And size the pad to the actual filled weight, not a guess.
Whether you are building a fire-water reservoir, an irrigation supply, or an industrial water reuse train, 15,000 gallons gives you real reserve. If the job is private fire protection, our Fire-Water Reservoir Tank Design guide covers NFPA 22 sizing discipline; if you are aggregating grey-water, rainwater, or HVAC condensate, the Industrial Water Reuse Tank Topology guide maps the storage train. Ready to move? Get your freight quote through the Freight Cost Estimator or call 866-418-1777 to lock in this Norwesco vertical storage tank.
