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.
- Sizes from 200 litres to 25,000 litres
- Fully customisable to suit your space
- Australian-made Colorbond Aquaplate Steel
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 | 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 |
New
Customize Your Round Tank
- To suit a specific space
- Made to order tanks
- No extra surcharges apply
- Maximise water storage in a tight spot
- Minimise impact on available space
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.
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.
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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
Watermark Approved ​Cerfitication
Genuine BlueScope Steel

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