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Polyethylene Cisterns

Below Ground Poly (plastic) Cistern Water Tanks

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Tank dimensions and fitting placement may vary slightly. Specifications are subject to change without notice.

Below Ground Pump Tank (Non-Potable Water)
Part Number Type Capacity Weight Dimensions Lids Price PDF
LNW43745 Sphere 200 gallon 100 lbs 47"Dia x 56"Tall 20" $526 PDF
LNW43551 Sphere 225 gallon 115 lbs 48"Dia x 50"Tall 20" $552 PDF
LNW41319 Sphere 300 gallon 119 lbs 54"Dia x 54"Tall 20" $723 PDF
LNW43552 LP Sphere 300 gallon 195 lbs 51"Dia x 52"Tall 20" $734 PDF
LNW40785 Sphere 500 gallon 205 lbs 64"Dia x 67"Tall 20" $990 PDF
LNW44831 LP Sphere 525 gallon 225 lbs 64"Dia x 62"Tall 20" $1,087 PDF

Low Profile Cisterns (water storage tanks)

  • Ideal for underground storage of water for drinking, fire protection, irrigation and rain harvesting.
  • Same watertight features as septic tanks.
  • Manufactured from high-density linear polyethylene (HDLPE)–compliant with FDA Reg. 21 CFR 177.1520 [C3.1] and NSF.
  • Thicker-wall version of septic tank design.
  • Multiple fitting locations.
  • Water tanks may be easily plumbed together in series to increase total underground storage capacity.
  • Cisterns are furnished with manhole covers only. No fittings installed from the factory.

The pricing below is a factory direct price only. The price does not include freight or tax.

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Below Ground Cisterns
Part Number Type Capacity Weight Dimensions Lids Price PDF
LSI44360 Low Pro 575 gallons 220 lbs 97"L x 48"W x 42"T 20" $1,353 PDF
LSI44405 Low Pro 1175 gallons 360 lbs 127"L x 60"W x 51"T 20" $2,062 PDF
LSI44407 Low Pro 1725 gallons 750 lbs 157"L x 69"W x 51"T 20" $3,096 PDF

Heavy Duty Low-Pro Below Ground Cisterns (water storage tanks) (Installation)


Low-profile polyethylene cisterns share all the features and benefits of the ribbed tanks listed above. These water tanks also have a lower profile which reduces required excavation depth. The heavy-duty design of these water tanks make them suitable for more extreme applications. 


 Available Accessories

  • Extra lids (20" diameter).
  • 24" Diameter Manhole Extensions (6", 15", 24" Heights).
  • No Factory installed fittings.

Norwesco Low Profile Below Ground Cisterns

The pricing below is a factory direct price only. The price does not include freight or tax.

Poly Low Profile Below Ground Cisterns (Potable Water Storage Tanks)
Part Number Type Capacity Weight Dimensions Lids Price PDF
LNW42559 Low Pro 2000 gal 704 lbs 126"L x 98"W x 51"T 20" $4,286 PDF
LNW44079 Low Pro 2500 gal 879 lbs 159"L x 99"W x 51"T 20" $5,324 PDF
LNW43770 Low Pro 2600 gal 1054 lbs 155"L x 99"W x 51"T 20" $5,603 PDF
LNW43771 Low Pro 2650 gal 1129 lbs 155"L x 99"W x 81"T 20" $5,884 PDF
LNW44390 Low Pro 3525 gal 1305 lbs 211"L x 102"W x 51"T 20" $8,675 PDF
LNW44876 Low Pro 5025 gal 1905 lbs 211"L x 102"W x 73"T 20" $12,430 PDF
LNW44877 Low Pro 5025 gal 1905 lbs 211"L x 102"W x 96"T 20" (24" Riser) $12,592 PDF
LNW45686 Cylinder 10000 gal 3000 lbs 356"L x 101"W x 107"T 2-24" $21,911 PDF
LNW41615 Cylinder 15000 gal 3800 lbs 511"L x 101"W x 107"T 3-24" $41,673 PDF
LNW41616 Cylinder 20000 gal 4300 lbs 665"L x 101"W x 107"T 4-24" $55,894 PDF
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