AQUASLIM® Colorbond Steel Slimline Water Tanks by Slimline Rainwater Tanks Melbourne

Colorbond Slimline Water Tanks


Our 'Slimmest' Slimline Tanks

Our Slimline AQUASLIM® Colorbond Steel Water Tanks range are our ‘Slimmest’ Slimline Rain Water Tanks – Ranging from 1,000 to 2,500 Litres.

They are the perfect rainwater tank for those awkward spots where there isn’t much space and they can even be made to be as narrow as 450mm wide. In a tight spot this can make the huge difference of whether you can walk down the side of your house past your tank or not.

Popular AQUASLIM Tank Sizes​

Aquaslim 1505 1500 Litres 2.0L x 0.55W x 1.57H
Aquaslim 1508 1500 Litres 1.2L x 0.88W x 1.87H
Aquaslim 2005 2000 Litres 2.2L x 0.55W x 1.87H
Aquaslim 2007 2000 Litres 1.8L x 0.72W x 1.87H
Aquaslim 2008 2000 Litres 1.8L x 0.88W x 1.57H
Aquaslim 2506 2500 Litres 2.3L x 0.66W x 1.87H
Aquaslim 2507 2500 Litres 2.65L x 0.72W x 1.57H
Aquaslim 2508 2500 Litres 1.8L x 0.88W x 1.87H
Our Slimline Steel Water Tanks are Watermark Approved Tanks

Watermark Approved

Our tanks are certified to ATS 5200.026 standards – proof of a tried and trusted tank design.

Our Slimline Steel Water Tanks use Genuine BlueScope Steel on all our Tanks

Genuine BlueScope

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

Our Slimline Steel Water Tanks use COLORBOND® Aquaplate Steel on all our Tanks

Colorbond Aquaplate

Our tanks are built with a specialised material from Bluescope Steel called Aquaplate which has a polymer lining that's safe for drinking water.

Our Slimline Steel Water Tanks are Australian-made in Gippsland, Victoria


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

Colour Options​

Choose from a range of genuine COLORBOND colours

Pale Eucalypt®
Pale Eucalypt®
Woodland Grey®
Woodland Grey®
Deep Ocean®
Deep Ocean®
Woodland Grey®
Night Sky®
Night Sky®
Galvanised Steel Rainwater Tanks by Slimline Rainwater Tanks

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.

Tank Inclusions​

Everything that comes with your AQUASLIM tank


Option of 25mm (standard), 32mm, 40mm, 50 mm, 80mm, 100mm or 150 mm BSP Threaded outlets


Either though the roof of the tank with a mozzie-proof inlet strainer or through the side wall with a PVC spigot


Option of 90mm (standard), 100mm, 150mm, 225mm or 300mm PVC overflows spigots

Retention Orifices

Any size orifice to comply with your stormwater retention requirements

CFA / Firefighting Accessories

Range of CFA Couplings, Storz fittings, vortex inhibitors and Fire Hydrant Tank accessories

Accessories to complement your tank

Pump Kits - including mains changeover kits for toilet/laundry use, Water filters for any application and Tank water level Indicators

Request Pricing

Fill out the form below to get pricing on some of our most popular AQUASLIM rain water tanks.

Related Tanks​

Not the tank you are looking for? Try our other tank range

Our range of Aqualong Slimline Tanks are large in volume but still slim enough to fit down the side of most buildings without intruding.

3,000 to 7,000 Litres

Our range of Aquaplate Slimline Squared Tanks offers you a modern, sleek design to suit any application. Volume capacity of up to 7,000L.

Up to 7000 Litres

Our range of Aquaplate Round Tanks are for those serious about water storage – Volume capacity of up to 25,000L.

1,000 to 25,000 Litres

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