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American Tank Company's polyethylene underground water cisterns are manufactured by means of the rotational molding process, which produces a one-piece, seamless, watertight tank and have a unique ribbed design that gives the tank added strength.
Our 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 our water storage tanks, our cisterns are produced with 100% virgin resin, which meets FDA specifications for potable water.
Where applicable, our cisterns have been approved by NSF (National Sanitation Foundation). Manhole extensions and lid/riser combinations are available for installations where it is necessary to bring access up to ground level.
In addition, we offer a full range of bulkhead fittings to help adapt the cistern to suit specific needs or applications.
American Tank Company supports the manufacturer’s 3-year warranty.
Click here to download general installation instructions
Due to the nature of the rotational molding process, dimensions may vary from what is published and shown on the referenced drawings. | 
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