Below Ground Water Storage Tanks - Polyethylene 

Below Ground Water Storage Tanks - Polyethylene

Allied Pumps' Polyethylene Underground Retention Tanks are tough, versatile liquid storage systems that have a standard capacity range from 5,000 litres up to 30,000 litres (larger on request). They can be connected in series to give larger storage capabilities - and therefore the combinations are limitless.

These innovative and robust storage systems are made from low density polyethylene - ideal for applications that require excellent chemical resistance, stiffness, toughness and and resistance to extreme Australian outdoor conditions.


  • Fully tested polyethylene tank designed to withstand ground and water pressure at depth
  • Complies and exceeds AS 1546.1 for septic tanks
  • Designed to AS 4766 (int.) for water storage tanks
  • Sealed locking tamper-proof lid - withstands 5kN load
  • Standard filter option available for cleaning water reducing frequency of opening tank for general maintenance
  • Stainless steel submersible pump with automatic mains water changeover device (optional)


  • Residential
  • Industrial
  • Council recreation
  • Playing fields
  • Hotels
  • Mine sites
  • Golf courses
  • Nursery irrigation
  • Townhouses
  • Park irrigation
  • Retirement villages
  • Truck stops
  • Sewage treatment
  • Commercial
  • Waste stations
  • Water retention