Round Steel Water Tanks

A classic and cost-effective solution to suit any application.


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Great for applications where space is not a problem. A round steel water tank is the most cost-effective solution for water storage.

Round tanks serve well in commercial or rural applications and can be customised to incorporate large-bore pipework. Watermark approved, engineer certified, and made to Australian standards with a 20-year corrosion warranty delivers perfect peace of mind.

Our round tanks are constructed from BlueScope Aquaplate coated steel with either galvanized or Colorbond external finish – meaning they are made to last.

Standard Sizes

Popular Round Tanks Sizes

Description Style Model Diameter (mm) Height (mm)
2000 Litre Round Tank Tall Option WL2000T 1180 1870
2500 Litre Round Tank Tall Option WL2500T 1350 1870
3000 Litre Round Tank Tall Option WL3000T 1500 1870
5000 Litre Round Tank Tall Option WL5000T 1900 1870
6500 Litre Round Tank Tall Option WL6500T 2150 1870
10000 Litre Round Tank Squat Option WL10000S 2900 1570
10000 Litre Round Tank Medium Option WL10000M 2700 1870
13500 Litre Round Tank Squat Option WL13500S 3100 1870
15000 Litre Round Tank Tall Option WL15000T 2900 2320
18000 Litre Round Tank Squat Option WL18000S 3550 1870
18000 Litre Round Tank Tall Option WL18000T 3100 2470
20000 Litre Round Tank Squat Option WL20000S 3350 2320
22500 Litre Round Tank Squat Option WL22500S 3550 2320
22500 Litre Round Tank Tall Option WL22500T 3100 3070
25000 Litre Round Tank Tall Option WL25000T 3250 3070


Customize Your Round Tank

Colour Options

Genuine COLORBOND Colours

The colours shown represent actual product colours as accurately as possible. However, we recommend checking your chosen colour against an actual sample of the product before purchasing, as varying screens and devices may affect colour tones and finish

COLORBOND® steel, BlueScope, the BlueScope brand mark and ® colour names are registered trade marks of BlueScope Steel Limited.

What’s included with your tank​

Round tank Inclusions​

  • Outlets and valves ​

    Options include threaded, PVC or Roll groove outlets from 20 to 300mm. Taps available to suit.

  • Inlets​

    Usually either through the roof of the tank with a mozzie proof inlet strainer or through the side wall with a PVC spigot.

  • Other accessories to compliment your tank ​

    Pump Kits - including mains changeover kits for toilet/laundry use, water filters for any application, tank water level indicators, float valves and first-flush devices.

  • Detention orifices ​

    Any size orifice to comply with your stormwater detention/retention requirements.

  • CFA/Firefighting Accessories ​

    Range of CFA Couplings, Storz fittings, vortex inhibitors and Fire Hydrant Tank accessories to suit CFA, BAL rating or Fire Service requirements.

  • Overflows​

    Options include PVC or HDPE from 50-300mm.

Start a conversation

We’re ready to answer any of your questions.

Our Promise

Warranty & Certification

20 Year BlueScope Warranty

The material in every tank is covered by a 20-year Aquaplate® warranty by BlueScope® Steel, an Australian company with an unsurpassed reputation for quality.

10 Year Workmanship Warranty

Because we stand behind all of our products and services, we offer a 10-year workmanship warranty on all Waterline domestic tanks, going beyond the industry standard for absolute peace of mind.

5 Year Commercial Warranty

Our tanks used in commercial applications carry an impressive five-year warranty, ensuring businesses can have confidence that their new Waterline tank can handle large volumes of water with ease.

Watermark Approved ​Cerfitication

Our tanks are certified to ATS 5200.026 and our individual certification number is 23105 – proof of a tried and trusted tank design. ​
Steel Supplied by Bluescope Steel

Genuine BlueScope Steel

Our tanks are manufactured using BlueScope Aquaplate steel and high-strength Henrob rivets, and sealed with approved food-grade silicon.​

Proudly Australian Made

Each of our water tanks are individually produced in Gippsland, Victoria, under a strict quality control system.

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