5,000ltr Underground Water Tank with Vortex Filter & Garden Pump System



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Polymaster’s Underground Rainwater Tanks give you the maximum capacity for the minimum square meterage.  Out of sight with the smallest footprint in the industry.

  • Fully tested polyethylene tank designed to withstand ground and water pressure at depth.
  • Engineered by geotechnical experts including Finite Element Analysis (FEA). These calculations are provided with the tanks.
  • Sealed locking tamper proof lid.
  • Anti-flotation design and engineering specifications completed to AS1170.
  • Certified to AS/NZS 4766 Rainwater tank standard
  • The underground tank houses an 80LPM submersible pump delivering high volume and pressure suitable for most gardens.

Vortex Filter

  • Self cleaning – captures more than 90% of water while cleaning your filter as well
  • Withstands up to 30 tonnes of vehicle weight
  • Extension risers available for deeper underground installation
  • Vortex Filter for roof area up to 200 square metres with 100mm pipe entry

Garden Pump


  • Fully automatic pressure system
  • Run dry protection
  • In-built electronic controls
  • Automatic reset
  • Quiet operation

Technical data:

  • Voltage: 220-240v
  • Max power: 0.37kW
  • Inlet Rainwater: 1″ BSP (female)
  • Inlet Mains Water: 1″ BSP (female)
  • Discharge outlet: 1″ BSP (female)
  • Litres per minute: up to 82lpm
  • See full Manufacturers Technical Data Sheet in downloads

2 years manufacturers warranty on pump

What makes Polymaster tanks the toughest?

  • Self-supporting roof design means no support poles are necessary
  • Extra thick corrugated walls for maximum strength
  • Double strength UV+ resin ensures ultimate protection against Australia’s harsh sun
  • One-piece construction with no joins, seams or part-lines
  • Certification to AS/NZ4766 tank standard
  • 22 COLORBOND® colours
  • 20 Year Warranty for peace of mind! *conditions apply

Australian Made

Quick Delivery

Up To A 20 Year Warranty

To Order Your Accessories, Call Our Sales Team On 1800 062 064