Dart Concrete Standard Water Tank
Our 22,500L (5000 gallon) Standard Concrete Water Tank is designed to provide dependable, long-term water storage for residential and rural properties throughout New Zealand.
Manufactured using high-strength certified concrete and reinforced with high tensile welded steel reinforcement, this tank is engineered for structural durability and reliable performance in demanding conditions.
This water tank is suitable for complete household water supply, rainwater harvesting systems, and rural water storage applications.
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-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.
Key Features
22,500 litre usable capacity
One-piece precast concrete construction
Reinforced with high tensile welded steel reinforcement
Heavy-duty reinforced base
Rebated 2-tonne concrete lid
Naturally insulated concrete for improved water storage conditions
Suitable for residential and rural water supply
Backed by a 10-year structural warranty
Technical Specifications
External Diameter:
3500mm
Height to Top of Wall:
2700mm
Height with Lid Installed:
2800mm
Height to Inlet / Outlet Position:
2550mm
Approximate Empty Weight:
10,000kg
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-tonne concrete lid with slightly convex profile for surface water runoff.
Maximum Semi-Burial Depth (Standard Lid)
May be installed up to the top of the side wall (overflow level) with standard backfill. Up to 200mm of lightweight cover (bark or scoria) may be used for garden concealment.
Soil, earth, grass, or compacted material requires the Heavy Duty model.
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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.
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 standard tanks be fully buried?
They can only be buried up to the top of the side wall (overflow level) with standard backfill. Up to 200mm of lightweight cover such as bark or scoria can be used for garden concealment.
Soil, earth, grass, or compacted material requires the Heavy Duty model.
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.
Can the tanks be painted?
Customers are welcome to paint the tanks themselves using the correct products. Light colours are only permitted as it absorbs less heat