The Norwesco 500 Gallon Vertical Water Storage Tank in green is built for above-ground water storage where a compact footprint matters. This is the California-only green variant, molded from polyethylene at a 1.0 specific gravity rating, which means it is engineered for water and water-weight liquids. At 73 inches tall on a 48 x 48 inch footprint, it holds 500 gallons in a vertical profile that puts more storage capacity into less ground area than a horizontal tank of the same volume.
Availability: The green color is a California-only variant and ships from Norwesco's Hanford, CA plant. If you are ordering from outside California, confirm availability before checkout, since this specific green configuration is restricted to California.
Will it work for your site?
Full of water, this tank carries roughly 4,170 pounds of contents, and the max rated contents weight is the same 4,170 pounds at SG 1.0. Plan your base for that load: the 48 x 48 inch footprint needs a level, fully supporting pad rated to hold a filled tank with no overhang. The vertical geometry suits household reserve, irrigation supply, livestock water, rainwater collection, and rural fire-water reserve where vertical storage saves space. If you are deciding between this and a longer horizontal tank, the vertical vs horizontal water-storage tradeoffs guide walks through the stability, footprint, and draw-down differences. Not sure 500 gallons is the right size? Run your numbers through the Tank Sizing Calculator or read the Tank Sizing Guide first.
Pad, placement, and plumbing
A poly tank this size is only as stable as what it sits on. Above-ground polyethylene tanks want a continuous, level pad that supports the entire base, never a ring or partial-bearing foundation. Our concrete pad sizing guide lays out the ACI 360R-10 framework for sizing that slab to the filled weight. For cold-climate sites, freeze protection planning matters too, and the fire-water reservoir design guide covers freeze engineering for vertical poly storage in remote service. Before you order, confirm the inlet, lid, and outlet fitting sizes and their locations against your plumbing plan by checking the technical drawing on this page or by calling us, and verify what fittings and gaskets are included so your bulkhead and outlet seal are accounted for rather than assumed.
The mistake to avoid
This tank is rated for a specific gravity of 1.0, meaning fresh water. It is not built to carry a liquid heavier than water. If you are planning anything denser than plain water, you need a higher-SG tank rated for that load, not this one, so confirm your contents are water or water-weight before you order; call 866-418-1777 and we will point you to a heavier-rated tank. If you are aggregating grey-water, rainwater, or HVAC condensate into a banded storage train, the water reuse tank topology guide covers quality-banding so you do not cross-contaminate sources.
This 500 gallon vertical water storage tank ships LTL freight from the Norwesco plant in Hanford, CA, with freight quoted live to your ZIP. Because it ships from a West-Coast origin, distance drives your cross-country LTL cost, so get an accurate number with the Freight Cost Estimator (ships from Hanford, CA), or call our team at 866-418-1777 to confirm fit, fittings, lead time, and shipping for your address.
