The Norwesco 2500 Gallon Black Vertical Storage Tank (SKU 42382B) is a polyethylene bulk water tank with a 102-inch by 102-inch footprint standing 79 inches tall, built for above-ground storage where you need real volume in a stable vertical body. The black resin is opaque to limit light-driven algae in stored water - that is an algae-control benefit, not a potability or contact rating - which makes this a practical choice for stored water, irrigation supply, rainwater holding, and fire-water reserve duty. Listed at 2,500 gallons in a vertical storage tank format, it gives rural and commercial sites a large reservoir on a compact 102 x 102 inch pad.
Will it work for your job?
This tank carries a 1.5 specific gravity rating, so it is engineered to hold contents up to one and a half times the density of water. With plain water at full volume the contents weigh roughly 20,850 pounds, and the tank is rated to carry contents up to about 31,275 pounds at the top of its SG range. Those numbers drive your pad design and confirm whether the tank is matched to what you intend to store. The 79-inch overall height keeps fill and inspection within reach of a standard ladder, and the 102 x 102 inch footprint defines the pad you need to pour. If you are storing contents heavier than water - up to that 1.5 SG, ~31,275 lb rated ceiling - this body has the wall margin for it; confirm chemical compatibility against the resin and gasket and verify the fitting gaskets are rated for your fluid before ordering. For help matching volume to your draw-down and refill cycle, use our Tank Sizing Calculator and the Tank Sizing Guide.
Set it on the right foundation
A tank this heavy needs a level, fully supported base. Minimum continuous pad: 102 x 102 in (8.5 x 8.5 ft), rated to bear 20,850 lb at full water and 31,275 lb at full SG. The entire footprint must bear evenly on a continuous pad - no point loads, no voids under the floor. Our guide to concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework for sizing that foundation correctly. If this tank is going into a private fire-protection reserve, our write-up on fire-water reservoir tank design covers NFPA 22 sizing discipline and cold-climate freeze protection. For grey-water, rainwater, or condensate aggregation, see our industrial water reuse tank topology guide, and for harvesting systems our first-flush diverter sizing reference.
The mistake to avoid
Do not assume the 1.5 specific gravity rating clears this tank for every liquid. It is rated and listed here for water service - the SG headroom is structural margin for the weight of denser contents, not a chemical-compatibility clearance, and the black resin carries no potability or contact rating. Before storing anything heavier or more aggressive than water, confirm the application against the resin and gasket materials. For outlet, fill, vent, and manway sizing, refer to the technical drawing on this page rather than guessing at port locations, since fitting configuration varies by build. Getting the foundation and the intended-contents weight right up front is what keeps a 2,500 gallon vertical tank in service for the long haul.
This tank ships LTL freight, quoted live to your ZIP, from the nearest Norwesco plant - Hanford, CA or Merced, CA. Both ship-from points are in California, so Western US buyers see the shortest transit and best LTL rate while Eastern buyers should plan for longer transit and higher freight. Get an exact number with our Freight Cost Estimator or call 866-418-1777 to lock in your shipment. Listed before freight; freight is quoted separately to your delivery ZIP.
