The 100,000-litre underground water tank system offers a powerful, large-capacity solution for secure and discreet water storage. Comprising ten interconnected 10,000-litre tanks, this modular system provides exceptional flexibility and reliability for commercial, agricultural, and industrial applications.

Manufactured from premium-quality, durable Medium Density Polyethylene (MDPE), each tank is engineered to withstand underground pressure while resisting corrosion, impact, and chemical degradation. The modular design allows for straightforward installation, maintenance, and future capacity expansion, making it a cost-effective and scalable water storage solution.

Ideal for rainwater harvesting, fire suppression, irrigation, or process water storage, this system combines high strength, long service life, and low maintenance requirements. With its underground configuration, it preserves valuable surface space while protecting stored water from sunlight, temperature fluctuations, and contamination.

Tank notes

  • Please ensure that the Installation Guidelines have been read and understood before commencing installation
  • Only lift when empty
  • This tank must be fully encased in concrete
  • Designed to take pedestrian traffic only; if required to carry vehicular traffic, a structural engineer's design is required
  • Top of the tank must not finish any more than 500mm below ground level
  • Without a structural engineer's design, tank must not be located adjacent to foundations, raised banks, patios or walls
  • Pipe-falls should be a minimum of 2:100 in the direction of water-flow, i.e. rainwater pipe and service duct towards the tank and the overflow away from the tank
10,000 Litre Underground Water Tank Dimensions
Height 2415mm
Diameter 2700mm
Inlet Upto 6"
Outlet Upto 6"
Weight 280kg
Access 600mm
Capacity 10,000 litres
Material MDPE
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