The Norwesco 500 Gallon Dark Green Vertical Water Storage Tank (SKU 43105) is a 500-gallon polyethylene vertical tank built for above-ground non-potable water storage on farms, rural sites, and light-industrial yards. It stands 73 inches tall on a 48 x 48 inch footprint, so it holds real volume without sprawling across your pad. The dark green color cuts light penetration to slow algae growth, which is one reason this size is a common pick for irrigation, livestock, rainwater holding, and hauled-water service. If you are weighing capacity against the space you have, run your numbers through the Tank Sizing Calculator or read the Tank Sizing Guide before you commit.
Will this tank work for your site?
This is a vertical storage tank rated for a specific gravity of 1.0, meaning it is engineered for water and water-weight contents up to that density. Filled to capacity, 500 gallons of water weighs 4,170 pounds, and that is also the maximum rated contents weight for the tank, so the pad and base below it carry the full load when the tank is brimming. The 48 x 48 inch footprint is what the slab or compacted base needs to fully support edge to edge. One thing buyers underestimate: at 73 inches, this tank stands over six feet tall, so plan for overhead clearance when you fill from the top, and check transit height through any gate or doorway on the way to its spot.
Setting it on the right base
A vertical poly tank at this loaded weight needs a flat, level, fully supporting base. For a permanent install on a concrete slab, our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework so the pad matches the loaded footprint. Worth knowing the flip side: a tank this tall is light and top-heavy when empty or at a low level, so on an exposed pad it can catch wind. Strap or anchor it if it sits empty between fills. If you are deciding between this vertical and a horizontal layout at larger sizes, the comparison in vertical vs horizontal water-storage tank tradeoffs covers the stability and footprint tradeoffs that apply here too. For rural fire-protection reservoirs, see our fire-water reservoir tank design guide and its NFPA 22 sizing discipline; for reuse setups that aggregate rainwater or grey water, the industrial water reuse tank topology guide covers quality-banded storage trains.
The mistake to avoid
This tank is rated for a specific gravity of 1.0 - it is built for water. Do not press it into service for a heavier liquid; anything denser than water exceeds what the 1.0 rating allows and can overstress the wall over time. On fittings: inlet, outlet, and vent placement vary by production run, so confirm your fitting and outlet locations against the technical drawing on this page before you order bulkhead fittings, gaskets, or camlocks and before you build the base. Keep the contents at water density and support the full 48 x 48 inch footprint, and this 500 gallon vertical water storage tank will serve a long working life.
This vertical water storage tank ships LTL freight, quoted live to your ZIP. It ships from the nearest Norwesco plant to you - Fairfield, TX; Griffin, GA; Owego, NY; Shawnee, OK; Tooele, UT; or Washougal, WA - so freight depends on which plant is closest to your delivery address. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you.
