Are you looking for a slimline poly rainwater tank?

You have come to the right place!

Tomorrows Tanks Today
The most advanced space saving tanks on the market today
Rainwater harvesting made easy!
Clean & healthy benefits
Our Range of Thin Tanks
The NEW 4000L Thin Tank

Authorized Distributor of THIN TANKS based in Perth Western Australia and delivering Australia wide

Welcome to Slim Thin Tanks

We specialize in the supply of slimline poly rainwater tanks for urban properties. Our specific range is most suited for homes with limited space

Slimline Poly Rainwater Tanks that fit into the narrowest spaces!

Tanks that look great!

We can supply and deliver a slimline poly rainwater tank, or we can provide a full rainwater harvesting system that suits your requirements

Water is a precious resource that we can't afford to waste!

Best Selling Range

1000 Litre Thin Tank

Capacity: 1000 Litre
Length: 2400mm
Height: 1850mm
Width: 260mm

2000 litre slimline poly rainwater tank

2000 Litre Thin Tank

Capacity: 2000 Litre
Length: 2400mm
Height: 1970mm
Width: 470mm

3000 litre slimline poly rainwater tank

3000 Litre Thin Tank

Capacity: 3000 Litre
Length: 2920mm
Height: 1970mm
Width: 580mm

New Additions to the Best Selling Range

1333 litre slimline poly rainwater tank

1333 Litre "Fat Tank"

Dimensions 1333 Litre
Length: 1012mm
Height: 1950mm
Width: 750mm

4000 litre slimline poly rainwater tank

NEW 4000 Litre

Dimensions 4000 Litre
Length: 2920mm
Height: 1970mm
Width: 750mm

2000 litre "fat" slimline poly rainwater tank

2000 Litre "Fat Tank"

Dimensions 2000 Litre
Length: 1500mm
Height: 1950mm
Width: 750mm

Our slimline poly water tanks provide minimum intrusion onto your property

Thin Tanks can be free standing or joined together to form a partition or a fence.

Use any number of Thin Tanks to achieve the desired capacity.

Thintanks™are an Australian made product, manufactured in South Australia, New Zealand and South Africa from food grade, 100% UV stabilised polyethylene.

All Thintanks™ are designed by a professional consulting engineer in accordance with all AS/NZ Standards and designs confirmed with FEA testing.

The solid one – piece constructed Thintank™ is fitted with two (2) brass 20mm outlets [1000L and 2000L] or 25mm outlets [3000L] at the bottom of the tank allowing for easy linking of tanks.

The 2000L and 3000L tanks come standard with an inlet strainer basket with UV protection. The 1000L tanks have an inlet basket at both ends of the tank for inspection purposes.

A 90mm overflow flange is provided that can be fitted to either end of the tank [needs to be cut out with a 95mm hole saw].

“Rainwater Harvesting is rainwater captured from a roof into a container and is the 3rd largest source of water in Australia.”

“Rainwater harvesting is the first and most efficient element of an integrated water management system.”


Start today! A small tank can be plumbed into your toilet and washing machine saving over 20,000L of water a year. Rainwater harvesting can also help reduce stormwater management costs.

Be waterwise and call us to see what we can do for you!

Going so soon?

Not quite sure what you want to do?

Watch our FREE webinar to find out the benefits of having your own rainwater harvesting system.

let's save the world together

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