Slimline Steel Water Tanks

A sleek, modern design to suit any application.

The modern slimline shape tank is designed with smaller properties and limited space in mind. Our range of Slimline Tanks are available in both the traditional round end style, or the modern square-end rectangular style.

Customisable tank dimensions means we can make a slimline tank to suit almost any project – whether commercial, domestic or industrial. That includes basement carparks, under a staircase or in a tight space on the boundary of your property.

Our rectangular style Waterline Squared tanks allow for large bore connections on all sides of the tank giving flexibility in system design where banks of these are coupled together. This gives a high capacity of storage within a very narrow footprint.

Standard Sizes

Popular Slimline Tanks Sizes

Description Model Length Width Height
1000 Litre Slimline Tank SL1007B 950mm 720mm 1870mm
1500 Litre Slimline Tank SL1505A 2000mm 550mm 1570mm
1500 Litre Slimline Tank SL1508A 1200mm 880mm 1870mm
2000 Litre Slimline Tank SL2005B 2200mm 550mm 1870mm
2000 Litre Slimline Tank SL2006C 1800mm 660mm 2020mm
2000 Litre Slimline Tank SL2007C 1800mm 720mm 1870mm
2000 Litre Slimline Tank SL2008A 1800mm 880mm 1570mm
2500 Litre Slimline Tank SL2506B 2300mm 660mm 1870mm
2500 Litre Slimline Tank SL2507B 2150mm 720mm 1870mm
2500 Litre Slimline Tank SL2508B 1800mm 880mm 1870mm
3000 Litre Slimline Tank SL3007A 2650mm 720mm 1870mm
3000 Litre Slimline Tank SL3008B 2250mm 880mm 1870mm
4000 Litre Slimline Tank SL4008A 2800mm 880mm 1870mm
4000 Litre Slimline Tank SL4012B 2350mm 1200mm 1870mm
5000 Litre Slimline Tank SL5008B 3000mm 880mm 2170mm
5000 Litre Slimline Tank SL5012A 2800mm 1200mm 1870mm
5000 Litre Slimline Tank SL5012B 2500mm 1200mm 2020mm
7000 Litre Slimline Tank SL7012A 3400mm 1200mm 2020mm


Customize Your Slimline 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

Slimline 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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Slimline Steel Water Tanks