Rainwater Tanks

National Poly's state of the art manufacturing facility with over 100 years combined knowledge means you are buying from the most experienced poly tank manufacturer in the Australia.

Tank Product Range

Select a product that interests you or check out our complete rainwater harvesting systems.

Made from SUPA UV Material

Round Water Tanks

Round Tanks

Our advanced poly manufacturing process use computer-controlled rotational moulding machines to make very strong one-piece tanks.

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Slimline Tanks

Slimline tanks are perfect for small blocks of land where there is limited space. They will fit perfectly along a wall, side fence or under a window.

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Underground Tanks

Suitable for under drive way installation these tanks are German engineered and manufactured for maximum strength and durability.

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Water Tank Accessories

Water Tank Accessories

Do you need a water tank pump, self-cleaning system, water diverter, leaf strainer or fittings? Check out our range of water tank accessories.

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Self-Cleaning Tank Water System

Self-Cleaning Tank System

Ensure your harvested rainwater in your tank remains clean, fresh and safe to drink with the TankVac® self-cleaning system.

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Round Water Tanks by Size

Small Water Tanks

Small Water Tanks

Round water tanks 1,000L–8,600L

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Large Round Tanks

Large Round Tanks

Round water tanks 10,000L–37,200L

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