Description
Description
Norwesco 250 Gallon Plastic Underground Water Storage Cistern Tank
Product Description
The Norwesco 250 Gallon Plastic Underground Water Storage Cistern Tank provides a discreet, space-saving solution for residential and small commercial water storage. Designed for complete underground installation, it preserves usable surface space while supporting rainwater harvesting, irrigation, fire-suppression reserves, and other non-potable water applications.
The corrosion-resistant polyethylene tank features seamless, one-piece construction and a reinforced ribbed design for underground burial. An accessible manway supports inspection, cleaning, and routine maintenance.
- Provides 250 gallons of underground water storage
- Suitable for residential and small commercial applications
- Designed for complete underground installation
- Made from corrosion-resistant polyethylene
- Seamless, one-piece rotationally molded construction
- Reinforced ribbed design resists soil pressure and ground movement
- UV-stabilized material helps prevent degradation before burial
- Manway provides access for inspection, cleaning, and maintenance
- Suitable for rainwater harvesting systems
- Supports garden, lawn, landscape, and agricultural irrigation
- Can provide a reserve for fire-suppression systems
- Suitable for vehicle washing and outdoor cleaning
- Intended for non-potable water-storage applications
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Norwesco |
| Manufacturer Part Number | 43746 |
| SKU | N-43746 |
| Capacity | 250 gallons |
| Color | White |
| Material | Polyethylene |
| Installation Type | Underground |
| Construction | Seamless, one-piece rotationally molded design |
| Diameter | 47 inches |
| Length | 47 inches |
| Width | 47 inches |
| Height | 56 inches |
| Weight | 79 lbs |
| Lid Size | 20 inches |
| Maximum Temperature | 130°F / 54°C |
| Warranty | 3 years |
| Shipping Dimensions | 47″ L × 47″ W × 56″ H |
| Shipping Weight | 124 lbs |
| Shipping Class | LTL |
| NMFC Code | 156600-02 |
FAQs
How much water can this underground cistern tank store?
The tank has a capacity of 250 gallons.
Is this tank designed for underground installation?
Yes. It features a reinforced ribbed design made to withstand underground burial, soil pressure, and ground movement.
Can this tank be used for drinking water?
The page identifies it for non-potable water storage. Potable-water use is not stated on the page.
Can it be used for rainwater harvesting?
Yes. The tank can collect and store rainwater for non-potable applications.
How can the inside of the tank be accessed?
The tank has a manway for inspection, cleaning, and maintenance. The listed lid size is 20 inches.
Norwesco 250 GALLON BELOW GROUND SPHERE WATER STORAGE TANK. Approximate dimensions: 47X56″. Manway: 1-20″.




