The Norwesco 4995 gallon dark green vertical water storage tank is bulk above-ground water storage for sites that need close to 5,000 gallons in a single footprint - rural fire reserve, irrigation supply, rainwater aggregation, and process or holding service where a large vertical water tank fits the pad. It measures 88 inches tall on a 142 x 142 inch footprint, molded in dark green polyethylene rated to a specific gravity of 1.0, which is the correct rating for water and other contents at or below water weight. At 142 inches across (nearly 12 feet) and 88 inches tall, this is a wide, low-profile vertical - at this scale the pad area, not vertical clearance, is the siting constraint, so plan for roughly a 12 x 12 foot level pad.
Will it work for your site
This is a vertical water storage tank, not a chemical tank: the 1.0 specific-gravity rating means it is sized for water-weight contents. At full capacity the tank holds 4,995 gallons, and water at that volume weighs about 41,658 pounds - that is the full water weight and the maximum rated contents weight, so your pad and foundation have to carry roughly 41,660 pounds of contained load plus the tank itself. Run the numbers against your demand before you buy: the Tank Sizing Calculator and the Tank Sizing Guide help you match draw-down and refill to a 4,995-gallon vertical, and the concrete pad sizing guide (ACI 360R-10 framework, ACI 318 boundary) walks through building a pad that carries that loaded weight across the 142 x 142 inch footprint.
Fittings and install
Outlet, lid, and fitting configuration for this unit are shown on the technical drawing on this page - confirm thread sizes and overflow placement against the drawing before you plumb, and size any bulkhead fittings and gaskets to the drawing's outlet bore. If you are commissioning a new install, the hydrostatic test methodology guide covers water-fill acceptance, pad settlement monitoring, fitting leak detection, and hold-time math so you confirm the tank and pad before putting it into service.
The mistake to avoid
The biggest error on a tank this size is treating the SG rating as a suggestion. This tank is rated to 1.0 specific gravity - water. Do not fill it with a denser-than-water liquid (anything above 1.0 SG) expecting the same service life; heavier contents exceed what the wall is built to carry. The second mistake is under-building the pad. The 142 x 142 inch base has to sit dead level on a foundation engineered for the full 41,658-pound water load, or the tank will settle unevenly and stress the wall. For larger water programs, the fire-water reservoir design guide (NFPA 22 sizing, freeze protection) and the industrial water reuse topology guide show how a vertical of this scale fits into a multi-tank storage train.
A 4,995-gallon vertical ships as a dedicated LTL/oversize load from the Norwesco plant in Fairfield, TX - there is no parcel option at this size, and freight is quoted live to your ZIP. Get your number on the Freight Cost Estimator or call 866-418-1777 to lock in delivery on your 4,995-gallon vertical water storage tank.
