Manufactured by Norwesco from virgin linear polyethylene (HDPE) rated to handle liquids up to 15.8 pounds per gallon. FDA approved for contact with potable water, ensuring safe storage for drinking water and food-grade liquids.
The 5025 Gallon Underground Water Storage Cistern Tank is designed for municipal water systems, large-scale agricultural operations, and industrial facilities requiring bulk storage capacity. At 5,025 gallons, this is a facility-scale tank built for operations that measure liquid consumption in thousands of gallons per day.
Constructed from virgin linear polyethylene (HDPE) using a single-piece rotational molding process that eliminates seams, weld lines, and potential leak points. The 1.9 specific gravity rating means this tank is built with significantly heavier wall sections than a standard water tank — necessary to safely contain liquids weighing up to 15.8 pounds per gallon. Translucent white walls allow visual level monitoring without opening the tank and reflect sunlight to keep contents cooler. Maximum operating temperature is 130 F / 54 C, with UV stabilizers compounded directly into the resin for outdoor service life.
This tank measures 211 inches long by 102 inches wide and 73 inches tall, requiring 149.5 square feet of level ground. Empty weight is 1880 pounds. At full capacity with a 1.9 SG liquid, expect approximately 81,506 pounds on the foundation. Requires an engineered reinforced concrete foundation designed by a structural professional for the full loaded weight. Large tanks require professional installation. Ensure the pad is level within 1 inch across the full diameter and that all piping connections allow for thermal expansion.
This tank ships without pre-installed fittings, giving you full flexibility to position inlet and outlet connections exactly where your plumbing layout requires. Use polyethylene-compatible bulkhead fittings for all penetrations. The 20" lid opening provides ample access for interior inspection, cleaning, and installation of float switches, level sensors, or submersible pumps. Install schedule 80 PVC or stainless steel piping on all NO FTG NPT connections. Full-port ball valves, expansion loops for thermal movement, and proper pipe support are essential at this scale.
Norwesco is the largest manufacturer of rotationally molded poly tanks in North America, operating over 20 manufacturing plants across the U.S. and Canada. Every tank is produced from proprietary resin formulations and backed by decades of rotomolding expertise. Backed by the Norwesco manufacturer warranty — contact us for specific terms and coverage details. FDA approved for contact with potable water and food-grade liquids. Every tank is inspected before it leaves the production floor — and we inspect it again before it ships from our facility.
- Constructed from virgin linear polyethylene (HDPE) with 1.9 specific gravity rating — handles liquids up to 15.8 lbs/gal
- 211" long x 102" wide x 73" tall
- 1880 lbs empty, approximately 81,506 lbs when full at rated specific gravity
- 20" lid opening for fill, venting, and interior access
- FDA approved for potable water and food-grade liquid contact
- Translucent white walls allow visual level monitoring without opening the tank and reflect sunlight to keep contents cooler
- Rated for continuous service up to 130 F / 54 C
- Seamless one-piece rotational molding — no seams, no welds, no leak points
- Manufactured by Norwesco — a leading name in rotomolded polyethylene tanks
- Large tanks require professional installation. Ensure the pad is level within 1 inch across the full diameter and that all piping connections allow for thermal expansion
- Ships via dedicated freight carrier due to oversized dimensions — contact us for delivery timeline and site access requirements
This is an atmospheric water storage tank. Not designed to be pressurized. For pressurized applications, consult OneSource Plastics at 866-418-1777.
