The Bushman 100 Gallon Vertical Rainwater Harvesting Tank (SKU 30037) is a compact green polyethylene tank built for capturing and storing roof runoff at homes, cabins, and small remote sites. It stands 42 inches tall on a 30 by 30 inch footprint, so it slips into a corner, along a fence line, or beside a downspout where a larger cistern would not fit.
Will it work for your site?
This is a 100-gallon vertical storage tank with a verified 42 inch height and a 30 by 30 inch base, spec'd for water and rainwater service at a nominal 1.0 specific gravity. Filled to capacity, it holds roughly 834 pounds of water spread over its 30 by 30 inch (900 square inch) footprint, which works out to under 1 psi of bearing pressure. That is trivial for a compacted or poured base, so a level, load-rated pad is precaution rather than a hard demand. Because the 834 pound figure assumes water, do not fill this tank with a denser liquid on the current pad spec. Use the Tank Sizing Calculator and Tank Sizing Guide to match tank volume to your roof catchment area and local rainfall before you buy.
Fittings and connections
The technical drawing on this page shows the tank's fitting layout. The 3/4-inch bulkhead pairs a polypropylene body with an EPDM elastomer seal, the correct combination for cold-water rainwater service on a hose or supply line. Confirm each fitting position against your gutter, first-flush, and overflow plumbing before installation.
- 8" x 7" flat fitting
- 8" x 6" flat fitting
- 3-inch outlet and overflow kit
- 3/4-inch PP body / EPDM bulkhead fitting
Sizing and rainwater setup
At 100 gallons this tank fits best as a point-of-use catchment tank or as one unit in a linked harvesting array rather than a whole-property reserve. Pair it with a first-flush diverter to keep the initial dirty runoff out of storage; our guide on first-flush diverter sizing per the Texas Manual on Rainwater Harvesting walks through the math. For code and rainfall factors that vary by location, see rainwater harvesting tank sizing by state. Outdoor poly tanks are most likely to fail in cold weather, so if you run this tank through freezing months, the freeze-protection engineering guide covers cold-climate service. If you are placing the tank on a poured base, the framework in our concrete pad sizing guide covers a pad that handles the full water weight.
Freight
This tank ships LTL freight, palletized, and freight is quoted separately to your ZIP code rather than included in the list price. Enter your delivery ZIP in the Freight Cost Estimator for a rate, or call us at 866-418-1777 and we will help you size the tank, confirm fittings, and book delivery.
