Norwesco 550 Gallon Below-Ground Cistern (Sphere) Norwesco’s below-ground water cisterns feature the same rugged, ribbed design found in their septic tanks. The cisterns are ideal for instances when drinking water must be hauled in or if a well just doesn’t meet consumption needs. As with all of Norwesco’s water storage tanks, the cisterns are produced with 100% virgin resin which meets FDA specifications for potable water. Where applicable, Norwesco’s cisterns have been certified under ANSI/NSF Standard 61.All Norwesco cistern tanks are manufactured by means of the rotational molding process, which produces a one-piece, seamless, watertight tank. Polyethylene is unaffected by soil chemicals so the tanks will not rust or corrode and require no additional coatings as other tanks do. Norwescos strict quality guidelines ensure an environmentally safe cistern tank.
Can remain in the ground when emptyMolded-in elevated pump stand on the bottom of the tank