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water tanks underground

Water Tanks Underground

Our water tanks underground are manufactured to Australian Standard AS/NZS 4766:2006, AS/NZS1546 & AS/NZS2566 – meaning when you buy our underground water tanks, you have peace of mind that you will not have to worry about manufacturing defects.

These underground water tanks are cheap and easy to install making them a perfect space-saving solution for your property.

We offer fast delivery throughout NSW, ACT, VIC & QLD.

Still not sure what you need? Simply contact us to discuss your requirements and arrange a quote.

Why Buy An Underground Water Tank From Poly Water Tanks

  • Built to cure properly, no rush job production for a premium-grade finish.
  • Made from the best materials, UV-stabilised virgin food-grade polyethylene with no taste or smell (drinking-water compatible).
  • Each underground water tank is certified to Australian Standards (AS2070).
  • Small footprint design with no waste, giving the  biggest storage capacity for its real estate.

Underground Water Tank Features

On occasion, it isn't practical to fit a water tank in the backyard or under the house due to lack of space, or perhaps a water tank doesn't fit in with the surrounding design. Whatever your reasons, the "Nugget" - a water tank underground that can be wholly buried in your backyard or under the driveway - or one of our round underground tanks are your perfect solution. With individual units available in 1250 and 1500 litre capacities, the "Nugget" can satisfy your water requirements from 1250 litres up to a maximum of 6000 litres by linking multiple individual units together. Alternatively, our 2000 and 3000 litre round underground water tanks have generous capacity with minimal excavation requirements.
As with all Poly Water Tanks, quality and durability are of utmost importance during the manufacturing process. The materials that we use are of premium quality and include UV stabilised virgin food grade polyethylene which leaves no taste or smell – this is drinking water compatible.
For best results when placing your water tanks underground, we recommend that you seek the advice of a consulting engineer for installation instructions specific to your particular scenario.