The Norwesco 305 Gallon Green Vertical Water Storage Tank is a California-only polyethylene vertical tank built for steady bulk water storage on a compact footprint. It holds 305 gallons, stands 50 inches tall, and sits on a 46-inch round base, so it tucks tight against a wall, in a pump house, or on a small concrete pad without sprawling across the site. Note the lane reality up front: this green tank is a California-only color, shipping from Hanford, CA, so it is sold and shipped for California and Western-lane destinations. It is a straight vertical water storage tank rated to a specific gravity of 1.0.
Will it work for your site?
At full water this tank carries 2,544 pounds of contents, which is its maximum rated contents weight at SG 1.0. You can check that number yourself: 305 gallons x 8.34 lb per gallon equals 2,544 pounds at water density. That contents load, not the empty shell weight, is what governs your pad and your placement. Plan a level base that fully supports the entire 46-inch-diameter footprint. The 1.0 specific gravity rating means it is sized for water at standard density, so keep it in water service; storing anything heavier than water is a different tank decision. Use the Tank Sizing Calculator and Tank Sizing Guide to match the 305-gallon capacity to your real draw and refill cycle.
Common uses and sizing
A 305-gallon vertical storage tank in this size class is a practical fit for rural water reserve, hauled-water holding, irrigation supply, and as a buffer in a larger storage train. If you are planning a fire-water reserve, read Fire-Water Reservoir Tank Design for Rural and Remote Sites before you fix a volume. For reuse setups that aggregate grey-water, rainwater, or HVAC condensate, the industrial water reuse tank topology guide covers how a tank this size fits into a banded storage train.
Set it on the right base, then test the fill
The most common mistake on a tank this size is the foundation. With 2,544 pounds of water bearing on a 46-inch round base, that surface has to be level and continuous under the full footprint. Our concrete pad sizing guide walks through the ACI 360R-10 framework for above-ground polyethylene tanks. See the technical drawing on this page for the tank's dimensional layout; the specific inlet, outlet, and vent configuration is confirmed at order, so call 866-418-1777 to lock in the fitting setup for your plumbing. Once it is set and plumbed, run the hydrostatic test methodology on first fill to confirm there is no pad settlement and no fitting leaks before you put it into regular service.
This tank ships LTL freight from the Norwesco plant in Hanford, CA, and freight is quoted live to your ZIP. Because it is a green California-only tank shipping from Hanford, California and nearby Western states get the shortest, lowest-cost lane. Get a number in seconds with the Freight Cost Estimator, or call 866-418-1777 and we will quote the lane and confirm availability for your delivery point.
