The Enduraplas 850 Gallon HDPE Vertical Liquid Storage Tank (SKU 900850-1.9-NAT) is a white, high-density polyethylene vertical tank built for straightforward bulk water storage. It stands 82 inches tall on a 56 x 56 inch footprint, so a single tank holds 850 gallons in the vertical space of a 4.7 ft x 4.7 ft pad (about 21.8 square feet). The HDPE body is the workhorse format for general water duty: rainwater capture, hauled water, irrigation supply, fire-water reserve, and process make-up.
Will it work for your site?
Match the tank to the pad and the plumbing before you buy. The footprint is 56 inches by 56 inches, and the vertical body carries the full column of liquid at 82 inches of height, so confirm overhead clearance for any fill line above the dome. Filled with water this tank weighs about 7,089 pounds, so the slab or compacted base has to carry roughly three and a half tons over that 56 x 56 pad without settling or edge-loading. Spread over the 21.8 square foot base, that is about 325 pounds per square foot of bearing load, so size the slab or compacted pad to that number. A flat, full-diameter, load-rated surface is not optional on a tank this size. Use our Tank Sizing Calculator and Tank Sizing Guide to right-size draw-down and refill against your daily demand, and call 866-418-1777 to confirm the actual fitting and port layout before you plumb it.
The mistake to avoid
This is a water tank. HDPE at standard wall handles water and low specific-gravity liquids, but no specific-gravity rating is published for this unit, so do not press it into chemical or high-density service without confirming the resin and SG rating with us first at 866-418-1777. The other common miss is the base: a 7,089-pound filled load will crack pavers, punch through gravel, or tip on an uneven pad. Build the foundation for the full-water weight, not the empty tank you set down. Operators storing water for private fire protection should read our fire-water reservoir design guide for NFPA 22 sizing and cold-climate freeze protection.
Freight and next steps
This tank ships LTL freight, quoted live to your ZIP code. Get a freight number with the Freight Cost Estimator, or call 866-418-1777 to confirm fitting layout, base requirements, and delivery before you order. Comparing sizes? See our 500-gallon vertical tank buyer's guide and 2000-gallon vertical tank buyer's guide to bracket your choice.
