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Water Tank Zones

Rainwater Tanks

Are you after a modern rainwater tank that adds style to your home while collecting water? National Poly provide a range of durable poly rain water tanks to suit your needs.

You can choose from a range of colours and sizes of slimline, underground or under deck water tanks that are great for limited spaces. Or optionally, you can select one of our modern ribbed-profile round water tanks.


Small, Medium and Large Water Tanks

Small Rainwater Tanks

Small water tank sizes range from 1,000 litres (220 gallons) to 3,000 litres (660 gallons).

Small rainwater tanks

Medium Rainwater Tanks

Medium water tank sizes range from 5,000 litres (660 gallons) to 8,600 litres (1,900 gallons).

Medium rainwater tanks

Large Rainwater Tanks

Large water tank sizes range from 10,000 litres (2,200 gallons) to 37,200 litres (8,200 gallons).

Large rainwater tanks 


Slimline Water Tanks

Slimline Water Tanks

Slimline water tanks are the ideal solution for thin spaces between your house and property line. These tanks fit extremely well along a wall and even under windows.

Slimline water tank sizes range from 1,100 litres (240 gallons) to 5,080 litres (1,117 gallons).

Slimline Water Tanks 


Underground Water Tanks

Underground Water Tanks

Underground water tanks are great for being installed below the surface of your yard or driveway.

These tanks are German-engineered for easy maintenance, and Australian-made for maximum strength and durability.

Underground water tank sizes range from 3,000 litres (660 gallons) to 6,500 litres (1,430 gallons).


Under Deck Water Tank

Under Deck Water Tanks

Our 2,000 litre under deck water tank is designed to provide you with maximum use of your space by being inconspicuously placed under your deck. Only available in NSW.

Under Deck Water Tanks 


Water Tank Accessories

Water Tank Accessories

Select from a wide range of water tank accessories whether you need pumps, water diverters or brass outlets.

Water Tank Accessories