2500 Gallon Plastic Multi-Use Underground Liquid Storage Tank

Manufacturer Part

The 2500 is the largest capacity below ground storage tank made today. Typically used to store water –both potable and non-potable– it can also be used as a large capacity septic tank. The end ribs will accept fittings up to 4" in size. Integral columns in the tank give it excellent structural strength.

Accuracy of the images may vary. Refer to the specifications table to ensure precision.

2500 Gallon Below Ground Holding Tank

2500 gallon underground holding is manufactured from linear polyethylene in one piece, seamless construction.  100% virgin polyethylene plastic this tank is designed for underground fresh potable water storage, septic & wastewater applications. 

  • This tank must remain 1/4 full at all times when buried in the ground.
  • Ribbed Design For Maximum Support
  • Resin complies with U.S. Food and Drug Administration regulation 21 CFR 177.1520 (c) 3.1 and 3.2.
  • Be sure to vent your tank.
  • Riser Extensions Sold Separately
  • MAXIMUM BURIAL DEPTH - 24"" from the top of the tank.
  • 20"" Vented Lid
  • Outlet plumbing kit must be bought and installed separately.
  • Polyethylene is unaffected by  soil chemicals so the tanks will not rust or corrode.  Manufacturer ensures an environmentally safe cistern water storage tank.

Tank Must Be Vented

This tank design will accept up to 4" plumbing options.  Integral columns in the tank give it excellent structural strength. 

Technical Drawings
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Key Specs
Gallon Capacity 2500
Lid Size 20"
Orientation Underground
Length 159"
Width 99"
Height 51"
Weight 880lbs
Material Polyethylene
Manufacturer Norwesco
Manufacturer Part Number 44079
Warranty 3 years years
Shipping Height 51"
Shipping Length 159"
Shipping Weight 880lbs
Shipping Width 99"
Ship Class OVS