The Bushman 150-gallon vertical rainwater harvesting tank (BM-30124) is a double-wall polyethylene tank in brown, standing 58 inches tall on a compact 30 x 30 inch footprint. It is built for residential and light-commercial rainwater harvesting where you want stored water shaded from sunlight and ground space is tight. At 150 gallons nominal capacity, a brimful tank carries roughly 1,251 pounds of water, so the pad or slab under it has to be rated for that fully loaded weight on a 30 x 30 inch base.
Will it work for your install?
This is a true double wall tank, which is why the geometry is taller and narrower than a single-wall drum of the same volume. The published specific gravity rating is 1.0, meaning it is engineered for water-weight contents (1,251 lb full); it is not rated for heavier-than-water liquids. The factory fittings shown on the technical drawing on this page include an 8-inch twist lid for access and inspection, a 1-inch spin-weld FNPT connection, and a bulkhead fitting for plumbing the outlet. The 8-inch twist-lid opening accepts a standard inlet screen or leaf guard, and the 1-inch FNPT bulkhead takes your supply or overflow run. Confirm those fitting positions and thread sizes against the technical drawing before you set the tank and plumb your lines. If you are matching tank volume to roof area and rainfall, run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide first.
Sizing it into a real rainwater system
A 150-gallon tank is a starting reservoir for a residential catchment loop, a first-flush-fed garden cistern, or a modular bank of several units. Plan to a working volume below the 150-gallon nominal rather than brimful — a double wall tank carries freeboard and thermal-expansion headspace, so size to usable draw; the double-wall freeboard sizing per ASTM D1998 piece explains that tradeoff. Because the inlet path matters as much as the tank, a first-flush diverter and inlet screen are the expected upstream components for clean harvested water; size your diverter to the roof area feeding it. Our guide on Bushman rainwater harvesting first-flush diverter sizing per the Texas Manual on Rainwater Harvesting (3rd edition) walks through that math, and for broader planning by climate and code, see rainwater harvesting tank sizing by state.
The mistake to avoid
The most common error on a vertical tank this tall on a narrow base is an undersized or uneven pad. A full 1,251-pound load on a 30 x 30 inch footprint concentrates weight, so set it on a level, load-rated slab or compacted pad, not bare turf, or the tank can lean and stress the fittings. Second, do not treat the 1.0 specific gravity rating as a chemical-service clearance — this tank is sized for water, and storing a denser liquid would exceed its rated 1,251-pound contents.
This tank ships LTL freight, quoted live to your ZIP from the nearest stocking plant. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you. Searching for a Bushman 150 gallon double wall vertical rainwater tank in brown — this is the one.
