The Norwesco 100 Gallon Portable Flat Bottom Utility Tank is a white polyethylene tank built for hauling and dispensing water from a pickup bed, trailer, or skid. At 43 inches long, 27 inches wide, and 29 inches tall, it sets up on a 27.0 x 43.0-inch footprint that fits standard truck beds and most utility trailers, with a flat bottom that seats flush on a deck without a custom cradle. It is stocked at seven Norwesco plants coast to coast, so it routes to you from the nearest one. Norwesco molds it with a 1.5 specific gravity rating, so the tank wall is built to carry liquids heavier than water - useful headroom even when you are only running water.
Will this 100 gallon tank work for your job?
Filled with water, this tank carries about 834 pounds of contents, and its 1.5 specific gravity rating means it is structurally rated to hold up to roughly 1,251 pounds of liquid. That puts it in the heavier-duty rating tier - liquids up to 1.5 times the density of water - versus the common SG 1.0 and 1.1 water-only utility tanks, so if you are hauling fertilizer, brine, or another denser solution, this one already has the wall for it. Plan your mounting deck, tie-downs, and vehicle payload around the full-water figure first; 834 pounds of water plus the tank itself is real weight to secure and to stop. Run those numbers against your rig with the Tank Sizing Calculator, and if you are choosing between sizes, the Tank Sizing Guide and the Norwesco utility tank sizing guide for 100 to 1000 gallon by application walk through matching capacity to the load.
Fittings and fill access
The technical drawing on this page confirms one factory opening: a threaded top opening sized for an 8-inch lid. That is your fill and inspection point. The pack confirms no molded outlet, so any outlet, bulkhead, vent, or gasketed lid hardware needs to be confirmed and added separately - the fitting layout is set at the mold, so settle the plumbing before the tank goes on the truck. Check the drawing's opening placement and overall dimensions against your pump, hose, and dispensing setup so everything lands where you need it.
Mounting and transport
This is a portable utility tank, so movement loads matter as much as static weight. A flat-bottom tank carrying water in a moving vehicle needs full-bottom support and proper restraint to handle braking and cornering. The common mistake is treating a 100 gallon water haul as light duty - 834 pounds of water shifting against a partial deck or undersized straps is how tanks crack and trailers fishtail. If you set it on a fixed pad rather than a deck, the concrete pad sizing guide covers the base. If you are running this on a farm fleet, the guide to 49 CFR 173.5 agricultural exemptions and DOT classification covers how portable utility tanks are treated for farm use, and if this is feeding a rural fire-water supply, the NFPA 22 reservoir design guide covers sizing and freeze protection.
This Norwesco tank ships LTL freight, quoted live to your ZIP from the nearest stocking plant - Fairfield, TX; Griffin, GA; Hanford, CA; Lancaster, OH; Shawnee, OK; Sheldon, IA; or St. Bonifacius, MN. Get a real number for your address with the Freight Cost Estimator, or call 866-418-1777 and we will route it from the plant closest to you and confirm lead time.
