• With our solutions, you will:
  • Slash your utilty bills or be energy independent
  • Conserve water and save a fortune
  • Make your home greener and more comfortable!
  • Protect our environment and act on climate change!

Underground Water Tanks

G-Store - Melbourne’s leading suppliers in underground water tanks and flexible rain water storage

Why take up precious land space? Underground water tanks are invisible and are an excellent option for retaining the aesthetic value of a property. As the leading water tank suppliers in Melbourne, G-Store we can supply our full range of concrete and poly underground water tanks for any application. Some tanks can be supplied Australia wide. 

Atlantis Flo-Tank Modules take it further allowing you to construct underground water storage to fit exactly the space you want to use, even under paved areas or driveways. G-Store is the expert Atlantis supplier in Victoria.

Premium quality underground concrete water tanks for rainwater storage and more!

Not sure where to start? Simple, at G-Store we have years of experience in rainwater harvesting and our staff are expert in helping our valued clients select the perfect water storage option for their lifestyle, home and needs.

Contact us for any further information about any of our underground water tanks or underground storage solutions. Don't hesitate to call 1300 766 940 Monday to Friday from 8:00 am to 5:30 pm - so we put together the right deal and show you what make us the leaders in underground water tanks in Melbourne!

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  1. Capture water from your roof or driveway. The Atlantis system allows the modular tanks to be arranged in any size or shape underground. The tank is filled by infiltration, ensuring the purity of the water.

    With the Atlantis system, tanks of any volume can be constructed. Using the Flo-Tank modules you can preserve the look of your home and garden, providing more usable ground area and enhanced looks compared to above ground concrete or plastic tanks.

    Features & Benefits

    • Minimised excavation depth
    • Lightweight and strong - minimum 20t/m2 
    • Maintenance free - pre filter required
    • Modular
    • Cost effective and easy to install
    • Approved for Potable water
    • Australian Designed, Owned and Manufactured
    • Made from High Quality Recycled materials

    Contact G Store to find the right Atlantis system for your application.

     

    Learn More
  2. A concrete underground tank offers an economical way to store rainwater below ground and out of site! These tanks can handle light vehicular traffic  - with NO LOSS OF ANY GARDEN SPACE.

    Features & Benefits

    • 5 year repair warranty
    • 40-60 year life expectancy
    • Includes hydrostatic valve, manhole cover.
    • 50mm BSP core drilled thread can be fitted on request.

    If you're after more you can always interlink tanks to create an unlimited storage capacity!

    Additional Information
    Available in;

    10500 L Class A (2.42m wide x 2.7m high),
    10750 L Class B (3.35m wide x 1.65m high),
    20000 L Class B (3.4m wide x 2.75m high),
    21500 L Class A/B (3.35m wide x 3.0m high),
    32000 L Class A/B (3.35m wide x 4.35m high),

    Class A is suitable for Pedestrian traffic, Class B is suitable for Light Vehicle traffic.
    - and many other sizes - contact G Store for more information.

    Learn More
  3. 5,000 Litres of Underground easily expandable Water Storage designed for installation in half a day.

    Features and Benefits

    • Modular design allows tanks to be easily joined for additional storage 
    • Rectangular footprint of 3.5m x 2.8m 
    • Strong composite construction - designed and engineered for residential traffic 
    • Fully adjustable riser - simply install the tank and cut the riser off at the required height 
    • Load vehicle traffic up to 2,500kg (10,000kg optional available) 
    • Strong alloy lid 
    • Child resistant fasteners secure the lid; plus safety barrier built-in riser 
    • Flat pump riser in base allows for easy installation of a submersible pump \
    • 10 year warranty if installed to manufacturer’s instruction 
    • Australian made Food Grade Polyethylene
    Learn More
  4. Polymaster 2250 Litre Bell Underground Tank the perfect small package for collecting roof rainwater, filtering it and storing it underground.

    Features and Benefits

    • Smallest Footprint available in underground tanks
    • Fully tested Polyethylene design to withstand ground and water pressure at depth
    • Anti flotation design engineered to AS1170 standard
    • Certified to AS/NZS 4766:2006 Eligible for water rebates - License no SMKP 21429.
    • Sealed locking tamper proof lid 
    • Dimensions
      • Capacity: 2250 Litres
      • Length: 1870 mm
      • Width: 1600 mm
      • Height: 1870 mm
    • Can be used with
      • Low Maintenance superior Vortex Filter
      • Economical SIP400 filter for shallow installations
    Learn More
  5. Polymaster 2250 Litre Bell Underground Tank complete with an SIP 400 filter the perfect small system for collecting roof rainwater, filtering it and storing it underground.

    Features and Benefits

    • Smallest Footprint available in underground tanks
    • Fully tested Polyethylene design to withstand ground and water pressure at depth
    • Anti flotation design engineered to AS1170 standard
    • Certified to AS/NZS 4766:2006 Eligible for water rebates - License no SMKP 21429.
    • Sealed locking tamper proof lid 
    • Dimensions
      • Capacity: 2250 Litres
      • Length: 1870 mm
      • Width: 1600 mm
      • Height: 1870 mm
    • Comes with
      • Economical SIP400 filter for shallow installations
    Learn More
  6. Polymaster 5000 Litre URT5000 - The SUB Underground Tank has the smallest footprint available in underground tanks - the maximum capacity for the minimum square meterage

    Features and Benefits

    • Fully tested Polyethylene design to withstand ground and water pressure at depth 
    • Anti flotation design engineered to AS1170 standard 
    • Certified to AS/NZS 4766:2006 Eligible for water rebates - License no SMKP 21429
    • Sealed locking tamper proof lid 
    • Dimensions 
      • Capacity: 5000 Litres
      • Length: 3470 mm
      • Width: 1600 mm
      • Height: 1890 mm
    • Can be used with 
      • Low Maintenance superior Vortex Filter
      • Economical SIP400 filter for shallow installations
    Learn More
  7. Complete with Heavy Duty fittings this version of the Donut is designed for under Vehicle Traffic Zones so you can locate your tank under a driveway or car park area. This market leading underground water storage option requires only a shallow excavation and is structurally designed to be installed in heavy duty load situations.

    Features and Benefits

    • Requires only shallow excavation (1.4mtrs)
      • Avoids complex Worksafe requirements
      • Minimises issues with hard rock or ground water
    • Capable of being installed anywere on site including under driveways.
    • Material: Food Grade Polyethylene
    • Capacity: 3000 litres but can be coupled with Toroid slave tanks for larger capacity
    • Dimensions:
      - width 2400mm
      - length 2400mm
      - height 1290mm
    • Fittings:
      - 50mm PVC faucet socket
      - 25mm PVC faucet socket
      - 3" BSP foot fitting
    • Includes:
    • Warranty: 7 Years

    Delivery: Melbourne, Sydney, Brisbane & Canberra Metro ONLY

    Learn More
  8. Locate your tank underground anywhere on your property even under the driveway! This market leading underground water storage option requires only a shallow excavation and is structurally designed to be installed in heavy duty load situations.

    Features and Benefits

    • Requires only shallow excavation (1.4mtrs)
      • Avoids complex Worksafe requirements
      • Minimises issues with hard rock or ground water
    • Capable of being installed anywere on site including under driveways.
    • Material: Food Grade Polyethylene
    • Capacity: 3000 litres but can be coupled with Toroid slave tanks for larger capacity
    • Dimensions:
      - width 2400mm
      - length 2400mm
      - height 1290mm
    • Fittings:
      - 50mm PVC faucet socket
      - 25mm PVC faucet socket
      - 3" BSP foot fitting
    • Includes a Tankmasta Barrell Filter
    • Warranty: 7 Years

    Delivery: Melbourne, Sydney, Brisbane & Canberra Metro ONLY

    Learn More
  9. The Toroid Donut Slave unit can be connected to any Toroid Master Tank (Donut or Bagel) to extend the storage capacity by an additional 3000 Litres

    Features and Benefits

    • Requires only shallow excavation (1.4mtrs)
      • Avoids complex Worksafe requirements
      • Minimises issues with hard rock or ground water
    • Capable of being installed anywere on site including under driveways.
    • Material: Food Grade Polyethylene
    • Capacity: 3000 litres but can be coupled with Toroid slave tanks for larger capacity
    • Dimensions:
      • width 2400mm
      • length 2400mm
      • height 1290mm
    • Fittings:
      • 50mm PVC faucet socket
      • 25mm PVC faucet socket
      • 3" BSP foot fitting
    • Warranty: 7 Years

    Delivery: Melbourne, Sydney, Brisbane & Canberra Metro ONLY

    Learn More
  10. Locate your tank underground anywhere on your property even under the driveway! This market leading underground water storage option requires only a shallow excavation and is structurally designed to be installed in heavy duty load situations.

    Features and Benefits

    • Requires only shallow excavation (1.4mtrs)
      • Avoids complex Worksafe requirements
      • Minimises issues with hard rock or ground water
    • Capable of being installed anywere on site including under driveways.
    • Material: Food Grade Polyethylene
    • Capacity: 5000 litres but can be coupled with Toroid 5000L or 3000L slave tanks for larger capacity
    • Dimensions:
      • width 2400 mm
      • length 3780 mm
      • height 1290 mm
    • Fittings:
      • 50mm PVC faucet socket
      • 25mm PVC faucet socket
      • 3" BSP foot fitting
    • Comes complete with
    • Warranty: 7 Years

    Delivery: Melbourne, Sydney, Brisbane & Canberra Metro ONLY

    Learn More
  11. The Toroid 5000L Bagel Slave Tank must be coupled with a Toroid Master Tank and increases the storage capacity of the system by 5000 litres. 

    Features and Benefits

    • Requires only shallow excavation (1.4mtrs)
      • Avoids complex Worksafe requirements
      • Minimises issues with hard rock or ground water
    • Capable of being installed anywere on site including under driveways.
    • Material: Food Grade Polyethylene
    • Capacity: 5000 litres but must be coupled with Toroid 5000L Master for 10,000 Litres of storage
    • Dimensions:
      • width 2400 mm
      • length 3780 mm
      • height 1100 mm
    • Warranty: 7 Years
    Learn More
  12. The Heavy Duty verson of the Bagel for use in Vehicle Traffic Zones such under driveways and parking areas. This market leading underground water storage option requires only a shallow excavation and is structurally designed to be installed in heavy duty load situations.

    Features and Benefits

    • Requires only shallow excavation (1.4mtrs)
      • Avoids complex Worksafe requirements
      • Minimises issues with hard rock or ground water
    • Capable of being installed anywere on site including under driveways.
    • Material: Food Grade Polyethylene
    • Capacity: 5000 litres but can be coupled with Toroid 5000L or 3000L slave tanks for larger capacity
    • Dimensions:
      • width 2400 mm
      • length 3780 mm
      • height 1290 mm
    • Fittings:
      • 50mm PVC faucet socket
      • 25mm PVC faucet socket
      • 3" BSP foot fitting
    • Comes complete with
    • Warranty: 7 Years

    Delivery: Melbourne, Sydney, Brisbane & Canberra Metro ONLY

    Learn More

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