Why compromise on storage capacity when choosing a steel rainwater tank. Companies in Australia have developed a very unique “made to measure” solution when designing the tank for your property.


This option is most effective when the popular sizes do not fit the space you have available.

Key Benefits

  • Very slim, narrow design that can fit in a space with limited space.
  • Incorporates a very rigid cross bracing system which will not bulge or bow.
  • Steel tanks have a very modern look and are very aesthetically pleasing to the eye.
  • Steel slimline tanks have a storage capacity up to 7000 litres.
  • Available in thousands of custom sizes.

The slimline steel range of rainwater tanks is available in a wide selection of popular colours and sizes up to a capacity of 7000 Litres. They can be built for very narrow spaces, usually to fit along side your house or fence-line. The quality internal cross bracing system has been engineered into the tank delivering maximum durability and strength.

steel rainwater tanks colour
All Steel Slimline Rainwater Tanks are manufactured with Bluescope Aquaplate steel, which comes with a 20 year corrosion warranty. Add to that an Industry leading 10 year construction warranty on all water tanks, and you have a long lasting rainharvesting solution that you can rely on.


  1. I like your points about a slimline tank being the best option because it is small and narrow, looks modern and sleek, and is customizable. I also like that it is built not to bulge or bow out. I think I will have to see where I can get one of these to replace my current water tank.

    • Hi Jenna,

      We appreciate your interest in our slimline steel rainwater tanks.

      Please refer to your inbox where I have sent you a reply.

      Kind Regards,

  2. These rainwater tanks seem like a great idea. I love the fact that they can hold up to 7000 liters, but don’t take away from your home’s aesthetic. We get a lot of rain where I live, so maybe I should look at getting one of these tanks.

    • Hi Ridley,

      Thank you for your enquiry.

      If you would like us to provide you with a quote, please let us know.

      Kind Regards,

  3. Do you do tall skinny water tanks to fit down a side-way and under eaves. I need a 1mt wide X 1mt long X 2.5mt or so high.

    • Dear Sue
      We cannot get a steel tank in those dimensions. You may want to look in our modular tank section or slimline range as there are some poly tanks that come close to the dimensions you have quoted.

    • Dear Annette
      Thank you so much for your enquiry regarding the Slimline Steel rainwater tanks through Tankworks.
      Steel tanks are custom made and there are a great many different sizes and capacities available.
      The best way to obtain pricing is to use the Size A Lator which is on the right hand side half way down on the main page of our website.
      You can use this progamme to put in the dimensions of the tank you require. If you go through the entire process withe the Size A Lator programme it will email me the query with your tank design and i can then send you a quotation.
      I look forward to receiving this information from you.

  4. Do you sell in the United States, or have a distributor here? I am located in Oregon and install many systems and am looking for a high quality metal tank that is slimline.

    • Hi Sarah

      We currently do not sell or ship to the USA due to the high shipping costs and size of our product.



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