The Norwesco 310 Gallon Black Vertical Storage Tank is a polyethylene vertical storage tank built for above-ground bulk water duty where a compact footprint matters. At 32 inches square and 94 inches tall, this black Norwesco vertical tank holds 310 gallons on a footprint of just 32.0 x 32.0 inches, so it fits tight equipment pads, well-house corners, and rural fire-water setups without sprawling across the site. The black resin helps block sunlight, which discourages algae growth in stored water compared to translucent tanks - one reason it gets specified for outdoor and remote installations.
Will it work for your site?
Filled with water, this tank carries 2,585 pounds of contents, so the pad and any platform underneath it must be sized and level for that load. The tank carries a 1.5 specific gravity rating, meaning the wall is built to safely hold contents up to 1.5 times the weight of water - that headroom translates to a maximum rated contents weight of 3,878 pounds. In practical terms, the 1.5 rating means this tank can hold denser-than-water dilute solutions and brines, not just plain water, provided you have confirmed compatibility for your specific liquid. Because all of that weight sits on a 32 x 32-inch base, foundation prep is the part of the job most worth getting right; for above-ground concrete pad design, see our Concrete Pad Sizing for Above-Ground Polyethylene Tanks guide, and use the Tank Sizing Calculator and Tank Sizing Guide to confirm 310 gallons is the right volume before you order.
Common uses and sizing
This is a workhorse for non-potable water storage, rainwater capture, and rural fire-protection reserves where a tall, narrow profile is preferred. If you are designing a private fire-water reservoir for a remote or cold-climate site, our Fire-Water Reservoir Tank Design guide covers NFPA 22 sizing discipline and freeze protection. For rainwater harvesting, our first-flush diverter sizing guide walks through keeping captured water clean, and for grey-water, rainwater, and HVAC condensate aggregation, see our Industrial Water Reuse Tank Topology overview. Fitting and outlet configuration is shown on the technical drawing on this page - confirm the specific inlet, outlet, and lid arrangement there before you plumb the install.
The mistake to avoid
The most common error with a 1.5 SG tank like this one is assuming the rating clears any liquid. The 1.5 specific gravity figure is a structural rating, not a chemical-service approval - it covers the wall loading for denser-than-water contents, but it does not make the tank suitable for aggressive chemicals. Keep this tank in water and dilute-solution service unless you have confirmed compatibility for your specific liquid. The second mistake is under-building the foundation: a fully loaded tank concentrates thousands of pounds on a small square base, so the pad has to be flat, fully supporting, and rated for the load.
This Norwesco vertical storage tank ships LTL freight, quoted live to your ZIP. It stocks at two plants - St. Bonifacius, MN and Washington Court House, OH - and ships from whichever is nearest your destination, which is the single biggest lever on your LTL cost. Get an exact freight number with our Freight Cost Estimator, or call 866-418-1777 and our team will quote the tank and freight together. Listed price is for the tank before freight.
