22,500L Heavy Duty Precast Concrete Water Tank
Our 22,500L (5000 gallon) Heavy Duty Concrete Water Tank is designed for installations requiring full burial or higher load capacity. Engineered for residential, rural, and lifestyle properties throughout New Zealand, this tank provides the same dependable long-term water storage as our Standard tank with enhanced structural performance.
Manufactured using high-strength certified concrete and reinforced with high tensile welded steel reinforcement, the Heavy Duty tank is built for installations where additional loading must be accommodated.
Built for Strength & Reliability
The 22,500L Standard tank is a one-piece precast concrete structure, eliminating weak joins and providing consistent structural integrity. Concrete’s natural insulating properties help maintain cooler internal water temperatures, while the enclosed environment reduces light penetration and assists in limiting algae growth.
The tank is fitted with a rebated 2.64-tonne lid designed for durability and long-term performance. There are five 100mm Inlet/Outlets available near the top and a brass 50mm balancing socket near the bottom which means there a plenty of options on tank positioning.
The Heavy Duty model is specifically engineered for installations where the tank will be fully buried under soil, earth, grass, or gravel. It provides increased load capacity compared to the Standard tank and is required where ground cover or vehicle loading applies.
Key Features
22,500 litre usable capacity
One-piece precast concrete construction
Reinforced with high tensile welded steel reinforcement
Enhanced structural load capacity
Heavy-duty reinforced base
Rebated 2.64 tonne concrete lid
Suitable for full burial installations (up to 200mm cover)
Driveway installation capable when used with centre column system
Backed by a 10-year structural warranty
Technical Specifications
External Diameter:
3500mm
Height to Top of Wall:
2700mm
Height with Lid Installed:
2850mm
Height to Inlet / Outlet Position:
2550mm
Approximate Empty Weight:
11,500kg
Capacity:
22,500 litres (5000 gallons)
Standards Compliance:
Manufactured in accordance with NZS 3106 using high-strength certified concrete and materials conforming to NZS 3109 and NZS 3422.
Construction:
One-piece precast concrete tank manufactured using high-strength certified concrete.
Reinforcement:
High tensile welded steel reinforcement integrated throughout the tank structure, including heavy-duty base reinforcement.
Lid:
Rebated 2.64 tonne concrete lid with 200mm riser and tank sealed onsite
Maximum Burial Depth (Heavy Duty Lid):
Suitable for full burial under soil, earth, grass, or gravel up to 200mm over the lid.
For driveway installations or vehicle loading, installation with a precast centre column system is required.
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Delivery & Installation Requirements
Our 22,500L concrete water tanks are delivered throughout the Waikato and Bay of Plenty regions using our specialised HIAB truck. Whether your property is rural, lifestyle, or residential, proper site preparation is essential to ensure safe and efficient installation. For fully buried or driveway installations, additional preparation may be required depending on site conditions. Our team can provide guidance to ensure correct installation for Heavy Duty applications.
Site Requirements for Offloading:
The truck must park on a level surface for offloading, and there must be sufficient space for the truck to reverse up to the tank site.
The outrigger/stabilizing legs will extend up to a total of 10 meters. They must rest on solid ground, not fill, to ensure stability.
Offloading from the side or on uneven ground is not possible.
The crane's reach is approximately 3-4 meters from the rear of the truck, depending on the tank model and size, provided these conditions are met.
Please Ensure:
Clear Access: Remove any obstructions such as overhead wires, branches, or gate posts. Although the driver will take utmost care, we cannot be held responsible for damage resulting from restricted access.
Stable Ground: The ground must support up to 30 tons and be free of hazards like holes or drains. If the site is wet, please arrange for appropriate machinery.
Level Site and Foundation: Ensure an even distribution of weight on solid ground, not fill. Place digging material appropriately for truck access.
Crane Leg Stability: Extend crane legs on flat, level, and solid ground – not fill – preferably in compliance with NZS 3604.
Tank Site Preparation: Prepare a flat and level site, setting the tank onto a base of 7mm granular fines on compacted material. Box in the fines if there's a risk of washout, and ensure the area is free of protrusions.
Timing and Additional Support:
Please have your site prepared for our truck as we allow 30 minutes per tank on site.
Site preparation is the purchaser's responsibility, but we are happy to conduct a site visit or video call prior to delivery to assist you if it is feasible. Any site work by our company will be at your cost, and delays may incur extra charges.
By following these instructions, you enable us to deliver your tank efficiently and safely. If you have any questions or need further assistance, please don't hesitate to contact us.
Optional Accessories
We offer lots of different optional accessories that are available to customise and enhance your water system. These include pumps, level indicators, Balancing, Shut off valves, water filtration units and more. Many can be factory installed saving you time. Contact us for a full range of options.
FAQ
Where do you deliver?
We regularly deliver throughout Waikato, Bay of Plenty, Auckland and even Waiheke Island. This includes all rural surrounding areas.
How long until I get my tanks?
We can generally deliver within a week or so of ordering. We are constantly making water tanks, these are not made to order which means we have a constant supply. Times may vary depending on time of year.
Can the Heavy Duty tank be fully buried?
Yes. The Heavy Duty tank is designed for full burial under soil, earth, grass, or gravel up to 200mm over the lid.
Can the Heavy Duty tank go under a driveway?
Yes, when installed with our precast center column system to support vehicle loading. This only supports light vehicles not trucks or big tractors / machinery.
Can you customise the tanks?
Sometimes yes, sometimes no. It depends on the type of customisation. Contact us if you have something specific in mind.
Do you make plunge pools?
No, not specifically. We can supply the tank without a lid. However, turning a tank into a pool is the customers responsibility. We cannot make these a custom height as the tanks are poured up-side-down.