525 Gallon Underground Cistern Tank

Den Hartog is a family-owned business that uses innovative molding and metal fabrication to create leading products. Since 1976, Den Hartog has been committed to providing quality tanks and being “Always at Your Service”. Den Hartog’s most popular brands include Ace Roto-Mold, Dual-Line, Aquifer, Sowjoy, and many more!

525 Gallon Underground Cistern Water Storage Tanks

Includes:

•   24" COVER

Cistern tanks are intended for bulk storage or collection of potable water and designed for below ground level installations. Tanks are manufactured from high-density polyethylene with U.V. inhibitors and feature a trapezoidal, deep rib design. Tanks feature a custom-molded gasket in the lid. Manufactured from extruded Nitrile rubber, the gasket snaps into the lid and ensures a watertight seal. Our exclusive lid design locks in place with nylon ties, eliminating the need for metal fasteners that can corrode and fail. Cistern tanks are FDA-approved for potable water and are manufactured for containment of liquids up to 1.7 specific gravity.

Tank Installation Guidelines