Rainwater Harvesting Calculator

Find out how much rainwater your can harvest from your roof
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Rainwater Harvesting Calculator

We have created this calculator below to hep you to determine how much water you can catch each year into your rainwater tank.

Select Water Tanks Reviews

s Avatars

Thank you so much for our tanks, they are well made and the staff who delivered the tanks were amazing and very helpful.

Any dealings with admin staff to delivery staff was fantastic, we would recommend the company to anyone looking at a new tank. - 5/26/2021 

Sue Reynolds AvatarSue Reynolds

Select Water Tanks were easy to deal with, from placing the order through to a well organised delivery.

Despite needing to postpone delivery a number of times (due to delays with our house build), they accommodated every request without a single complaint.

It is rare nowadays to find a company that provides great service from beginning to end, but Select Water tanks delivered (excuse the pun) and made the process a breeze! - 5/26/2021 

michael barlow Avatarmichael barlow

Had the men deliver and install 2 wonder stainless steel water tanks today. They travelled a round trip of 900 km, getting up and leaving Brisbane at 0330 am. We gave them a challenging install as we have a bush block in the middle of no where. It was a breeze for them with no worries or complaints. They did a fantastic job. I would highly recommend Select Water Tanks as this is our second lot of tanks and we have had no trouble at all. Councils also love these tanks in rural sites as they can withstand anything nature can throw at them. - 5/19/2021 

Samford Valley Plumbing Service AvatarSamford Valley Plumbing Service

Very happy with the customer service we received from Linda. Tank was ordered and delivered on time and met all expectations. Excellent communication and coordination of the delivery made it so easy. - 5/18/2021 

John Lock AvatarJohn Lock

I ordered some raised garden beds. Very prompt in our dealings. Impressive turn around and speedy delivery. The product itself is better than I imagined. Very impressive manoeuvring of the truck and trailer by the bits on my tight entrance! Well recommended. - 2/04/2021 

Add in your Roof Size & Annual Rainfall

Find the average annual rainfall for your area: Weather Zone

Lisa Hagean

Select Water Tanks Google Review Lisa Hagean 

"I recently ordered a 7500 litre stainless steel round tank from Select Water Tanks and couldn't be happier with it. The process from order to delivery was perfect and I was kept in the loop with manufacture times and a set delivery date. Communication was great through the process and I had to change the delivery date to suit me and there was no issue with this.."

Gary Turner

Select Water Tanks Google Review Gary Turner 

"A big thank you to Jason, Linda, Loyd, Damon and the team at Select Watertanks.The whole process ran on time, in fact you were able to deliver all our tanks prior to Christmas.The boys did a great job negotiating our tricky block and setting up the tanks.We highly recommend Select Watertanks"

Paul Inglis


"The team from Select Water Tanks were superb. The way they handled my new tank was especially careful and thorough. It was great watch them take it down a hill and locate on the site. Highly recommended for good product, service and interest in the customers needs."

Barbara Geitz

Select Water Tanks Google Review Barbra Geitz 

"We have just bought 3 tanks and have now installed them. We found Select Tanks very easy to work with right through to delivery. We had to change the delivery date on a number of occasions and it was never a problem. We are very happy with the quality of the tanks which look great."

For Help & Advice about Rainwater Harvesting

Check out our Articles Below

Bushfire Capability Package

Bushfire Capability Package

Steel Water Tanks Bushfire Resistance ReportResearchers from the CSIRO and Monash University have conducted extensive testing on the performance of water tanks in bush fires. They found: Stainless Steel Tanks did not burn or split when fully exposed to fire for over...

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Steel Water Tanks: The Planet-Friendly Choice

Steel Water Tanks: The Planet-Friendly Choice

Australia has been facing droughts year after year for decades, and with climate change and our growing population, it’s only expected to get worse. Water tanks are an increasingly common sight in the backyards of Aussie homes, and outside of commercial and industrial...

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Why Stainless Steel Water Tanks are a great choice

At Select Water Tanks we firmly believe that Stainless Steel Water tanks are the best choice for a number of reasons. They’re longer-lasting, offer you fantastic value for money over their lifespan, and at the end of their life are fully recyclable – better for you, better for the planet!

A Select Stainless Steel water tank has a minimum life of 30 years.  The corrosion resistance properties of  Stainless Steel means the tank will not only last for a long time but it will always look brand new.

Longer Lasting

Our stainless steel tanks have no plastic and they create a low carbon emission footprint in production. They are fully recyclable. The main elements can be easily recovered and re-used.  


Stainless Steel is a favourite material of architects and designers of beautiful homes. Your Stainless Steel tank will maintain its appearance for its natural life.


Look Great

Over its life cycle, a Stainless Steel water tank with its minimum life expectancy of 30 years, will ultimately be very cost effective.


Cost Effective

More Than Just a Manufacturer of Steel Rainwater Tanks

Select Water Tanks custom make round & slimline water tanks that are longer lasting, better looking, healthier, & better for the environment. They can be made from either grade 304, marine grade 316 stainless steel or colorbond steel.

Tailored Solutions

We find the perfect solution for your rainwater harvesting system needs.

Quality Guaranteed

Highest quality Stainless steel water tanks backed by 30 years non corrosion warranty. Our Colorbond Tanks are backed by 20-years non corrosion warranty.

Industry Leading

We are the first Australian company to design and manufacture stainless steel water tanks.

Looking for Help or Advice?

If you need any help with Steel Water Tank Pricing, Custom Sizing, Delivery Charges or anything else
Please contact us today - we are here to help.