The 165 Gallon Plastic Water Storage Tank from Norwesco is a vertical polyethylene tank standing 56 inches tall on a 31-inch diameter footprint, holding 165 gallons of water in a single upright cylinder that tucks into the corner of a pump house, barn, or utility room. It is built for water storage and vertical storage tank duty where floor space is tight but you still need real reserve volume on hand.
Will it fit and hold up for your install
The 31-inch diameter sits on roughly a 5.2 square foot circle, and at 56 inches tall the tank clears most 80-inch doorways standing upright, so getting it into a closet, pump house, or barn corner is straightforward. Leave hand clearance around the tank for plumbing access once it is set. This tank carries a specific gravity rating of 1.0, meaning it is engineered for water and water-density liquids up to the weight of water (8.34 lb/gal). Filled to capacity, 165 gallons of water weighs 1,376 pounds, and that is the maximum rated contents weight. Plan your stand, slab, or platform around that figure: a fully loaded tank concentrates well over half a ton onto a 31-inch circle, so the pad has to carry the load without flexing or settling. For above-ground placement on concrete, the concrete pad sizing guide using the ACI 360R-10 framework walks through how to size the slab so the footprint stays fully supported. Run the numbers ahead of time with the Tank Sizing Calculator, and if you are deciding between this and a larger reserve, the Tank Sizing Guide helps match volume to demand.
Common uses and what to check before you buy
At 165 gallons, this is a practical size for livestock water, rainwater holding, and small water-reserve duty. If you are building a rural or remote fire-water reservoir, the fire-water reservoir tank design guide covers NFPA 22 sizing discipline and freeze protection for cold-climate service. For grey-water, rainwater, or HVAC condensate aggregation, the industrial water reuse tank topology guide maps how to band and sequence storage by quality.
Fitting sizes and locations are not configured in this listing, so confirm the outlet, bulkhead, and lid sizes against the technical drawing on this page before you buy plumbing or order gaskets. The bigger mistake to avoid is putting anything heavier than water in this tank. The 1,376 lb full-weight figure assumes water; a denser liquid would push past the tank's rating before it is even full, because the 1.0 specific gravity rating is for water-density contents only. If your liquid exceeds 1.0 specific gravity, call 866-418-1777 for a tank rated to your fluid's density. Once the tank is set, the hydrostatic test methodology guide walks through water-fill acceptance, pad-settlement monitoring, and fitting leak detection before you put it into service.
Freight
This tank ships LTL freight, quoted live to your ZIP code. Because Norwesco molds it in plants coast to coast, your tank leaves from the location nearest you, which means shorter LTL lanes, lower freight, and faster transit. Shipping points include Hanford, CA, Griffin, GA, Owego, NY, Shawnee, OK, Fairfield, TX, Tooele, UT, and Washougal, WA, serving California, Georgia, Mississippi, New York, Oklahoma, Texas, Utah, and Washington. Get an exact freight cost with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you and confirm the nearest shipping plant.
3 Year Warranty
