The Norwesco 6500 Gallon Vertical Water Storage Tank is a Hanford, California-built bulk reservoir for sites that need serious holding capacity in a single footprint. One eligibility note up front: this is the Green California-Only color, so it is sold for California sites only - if you are ordering to another state, that green will not be available to you. Molded in polyethylene, it stands 150 inches tall on a 119 x 119 inch round footprint and carries a 1.0 specific gravity rating, which means it is engineered for water and water-weight liquids at full fill, exactly the duty most buyers searching for a large vertical water storage tank are after.
Will this tank work for your site?
At 6,500 nominal gallons, a full tank of water weighs about 54,210 pounds, which is also the maximum rated contents weight for the 1.0 SG shell. That number matters before anything else: your pad and your soil have to carry more than 27 tons sitting on a 119-inch-diameter circle. Plan the foundation around that load, not around the empty tank weight. Because this is a 1.0 SG water tank, contents must not exceed water weight at the full 6,500 gallons; heavier liquids would call for a higher specific-gravity rated shell. If you are still confirming the right size for your draw rate or storage days, run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide before you commit to a footprint this large.
Foundation, fill, and the mistake to avoid
The most common and most expensive mistake on a tank this size is under-building the pad. A vertical poly tank of this height and water weight needs a level, properly sized concrete or compacted base, and a rushed or settling pad will stress the tank wall over time. Our concrete pad sizing guide walks the ACI 360R-10 framework for above-ground poly tanks so the base is right the first time. Once it is set and plumbed, do not just put it into service - fill it with water and watch it. Our hydrostatic test methodology covers the water-fill discipline, pad settlement monitoring, fitting leak checks, and hold-time math that catch problems while they are still cheap to fix. Outlet and fitting configuration is shown on the technical drawing on this page and confirmed at order, so check those connection points there before you plan your plumbing.
Common applications and site access
A 6,500-gallon vertical reservoir is a workhorse for rural and remote water supply, agricultural and irrigation storage, and stored-water fire protection. For fire-protection planning, our guide on fire-water reservoir tank design covers NFPA 22 sizing discipline and freeze protection for cold-climate sites. If you are aggregating grey water, rainwater, or HVAC condensate for reuse, our write-up on industrial water reuse tank topology shows how a tank this size fits a quality-banded storage train. Keep the dimensions in mind for delivery too: at roughly 10 feet in diameter and 12.5 feet tall, this tank needs clear overhead and turning room for the LTL truck, so confirm site access before it arrives.
This tank ships LTL freight from the Norwesco plant in Hanford, California, and freight is quoted live to your ZIP. California and Southwest buyers will see the best freight from that origin, while distant buyers should expect a larger LTL number on a shell that weighs over 54,000 pounds full - get your exact number with our Freight Cost Estimator or call us at 866-418-1777 and we will quote it by phone. Have a plan to set it on its pad once it lands. Questions on sizing, the California-only green color, or delivery? Call 866-418-1777 and we will walk it through with you.
