About Us

Over 30 Years of Manufacturing Experience

The Original SLIMLINE Colorbond Rainwater Tank

SLIMLINE TANKS is committed to manufacturing the very best rainwater storage tanks available. This commitment to unsurpassed quality has resulted in the constant growth of the company since 1982.

Now locally manufactured in Victoria, Slimline Rainwater Tanks have over 30 years experience making and supplying rainwater tanks. Each original rainwater tank carries an individual serial number – the badge of authenticity and your guarantee of quality.

Slimline Rainwater Tanks offer factory-direct sales, builder packages and installation advice together with unparalleled service in keeping with our commitment to quality.

We are proud to be an industry leader:

  • SLIMLINE TANKS invented the slimline shape of watertank – now accepted as the ‘norm’ for domestic use
  • SLIMLINE TANKS were the first Colorbond Steel Tank manufacturer to achieve Watermark Certification & Engineering – now required to be eligible for government rebate schemes
  • SLIMLINE TANKS developed the now popular Slimline Squared tank design
  • Each tank design is engineered & each tank undergoes a strict quality control procedure to ensure a great finished product
  • Our tanks are compliant to AS1170, ATS5200, AS4100, AS4600 & AS 4020

Long Warranty for Peace of Mind

Your tank is not going to split...or bulge...or rust out... Genuine Bluescope Aquaplate material.

  • BlueScope's Warranty

    The material in your tank is covered by a 20 year Aquaplate warranty by Bluescope Steel. Time proven results from an Australian company means you can't go wrong!

  • Slimline's Warranty

    All domestic tanks are covered with our 10 year workmanship warranty. Our quality guarantee gives you the best cover on the market! Who better than the company who designed the "Slimline Tank"?

  • Commercial Warranty

    All tanks in commercial applications are covered by our 5 year warranty. With engineered designs you can be assured that our tanks can handle the stress of large volumes of water!

Accreditations and Associations

  • Watermark Certification

    Designed & Constructed to Australian Standards

  • Steel by BlueScope Steel

    Genuine Australian BlueScope Steel

  • Colorbond® Aquaplate®

    Developed Specifically for Water Tanks

Need a New Rainwater Tank?

Speak to one of our sales consultants to get started. We also don’t charge any extra for custom built tanks.

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