The Norwesco 220 gallon vertical water storage tank is the California-distributed green build, sized for residential and rural water storage where you need real volume without a large footprint. At 220 gallons in a 42-inch diameter, 44-inch-tall vertical form, it holds steady for fire-reserve top-up, gravity feed, irrigation buffering, and general bulk water service. This is the green-tinted California unit; the green coloring cuts light penetration to slow algae growth in stored water.
Will this tank work for your job?
The specs are straightforward. Capacity is 220 gallons in a vertical water tank built from polyethylene, rated to specific gravity 1.0 — built for water and water-density liquids, not heavier chemicals. Footprint is 42 by 42 inches with an overall height of 44 inches. The 42-inch diameter is a hard number, not a soft one: measure your gate, because this needs a 42-inch-plus clear opening to roll through, and a standard 36-inch man-gate will not pass it. Filled with water, the tank carries 1,835 pounds of contents, and that 1,835-pound figure is also the maximum rated contents weight. In other words, the rated ceiling equals full water weight — there is zero density headroom, so this tank is maxed out at plain water with no margin for any liquid heavier than 1.0 SG. Deciding between this and another size? Run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide before you commit.
Fittings and install
The technical drawing on this page specifies a revised lid thread; it does not list a factory outlet or bulkhead, so confirm your outlet configuration before ordering if you need a plumbed connection. Bulkhead fittings and gaskets are sized to the chosen outlet — call to spec the gasket and fitting kit for your plumbing. A vertical tank this size needs a flat, fully supported base; 1,835 pounds of water on an uneven or undersized pad will stress the tank wall. For a permanent install, size the concrete pad correctly — our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework. After the tank is set and plumbed, accept it with a controlled water fill rather than a quick top-off — see our hydrostatic test methodology for fill discipline, pad-settlement monitoring, and fitting leak checks. If this tank feeds a rural fire reserve, our fire-water reservoir design guide covers NFPA 22 sizing and cold-climate freeze protection, and for grey-water, rainwater, or condensate aggregation, the water reuse tank topology guide covers quality-banded storage trains.
The mistake to avoid
This is a water storage tank rated to specific gravity 1.0, and the rated ceiling equals full water weight. The single most common error is putting a denser liquid in it — anything heavier than water exceeds the wall's design load even when the tank is not visibly "full." Keep it to water and water-weight liquids. For chemicals above 1.0 SG such as acids, fertilizers, or brine, ask for a 1.5 or 1.9 SG-rated tank instead. The other detail: this is the Green (California Only) distribution build, so confirm availability for your delivery state before ordering.
This Norwesco vertical water storage tank ships LTL freight from the Hanford, California plant, quoted live to your ZIP. Get a real number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it and confirm the right tank for your site.
