The Enduraplas 850 Gallon Vertical Water Storage Tank (SKU TC850XIW-BLACK) is a black polyethylene bulk-water tank built for above-ground non-potable storage - hauled water, rainwater capture, fire-reserve, and process-water supply. It stands 124 inches tall on a 48-inch diameter footprint, so it delivers real capacity in a tight 48 x 48 inch pad area, which is exactly what you want where floor space is the constraint and vertical clearance is available. The black, light-blocking polyethylene resists UV and suppresses algae growth in stored water - a practical advantage for rural fire-reserve and rainwater duty where the tank sits outdoors year-round. Every dimension here is verified against the manufacturer's launch spec, not inferred.
Will it work for your site?
At 850 gallons, a full tank of water weighs roughly 7,089 pounds, and that number drives the entire install. Spread over the 48-inch (12.6 ft²) circular footprint, that works out to about 565 lb/ft² of bearing pressure on your slab or ring wall - the single figure your foundation has to answer to. Plan the pad before the tank arrives; a level, fully supporting base is not optional on a vertical tank this tall. If you are still deciding whether 850 gallons is the right volume, run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide before you commit. The tall, narrow profile makes this a common pick for rural fire-water reservoirs and remote-site water storage where pad area is small; our guide on fire-water reservoir design and NFPA 22 sizing walks through that use case in detail.
Pad and install discipline
Because the loaded weight is concentrated on a compact footprint, foundation work matters more than on a squat tank. Our reference on concrete pad sizing for above-ground polyethylene tanks covers the ACI 360R-10 framework for sizing the slab to that 565 lb/ft² load. Once the tank is set and plumbed, run a proper acceptance fill - the hydrostatic test methodology guide lays out the water-fill discipline, pad settlement monitoring, and hold-time math for a clean commissioning. For reclaimed or blended supply, the industrial water reuse tank topology guide shows how a tank like this fits a quality-banded storage train.
The mistake to avoid
Do not under-build the base. A common error on tall vertical tanks is setting them on gravel or a partially supporting ring - at 7,089 pounds full, any soft spot or edge overhang becomes a stress riser in the tank wall. Give it a flat, fully bearing pad sized to the full water weight, and confirm your inlet, outlet, and lid layout against the technical drawing on this page before you plumb it in.
This tank ships LTL freight and is quoted live to your ZIP code - get a rate with our Freight Cost Estimator or call 866-418-1777 to lock in delivery and answer any spec questions before you order.
