Stormwater Detention Tanks

Detention Tanks | Stormwater Detention System

Stormwater Retention Tanks are Built & Designed to Store Water & Slowly Release part of a Stormwater System.

Contact us Below For Expert Help & Advice.

Stormwater Detention Tanks | Detention Tank

Some local Councils have a requirement where they are wanting effective stormwater planning which may require you to install a Stormwater Detention tank.

Stormwater Detention tanks are designed to catch the fast-flowing water run off before it impacts on the environment through causing erosion and/or damage to infrastructure as well as potential flooding.

Stormwater Detention tanks catch the fast-flowing water and detain it temporarily in the tank but also they are specially fitted with a valve that will release the water slowly over time. Because the water is released at a much slower speed, the chances of it causing damage to the environment or flooding is minimized and water runoff can be better managed.

Sometimes a Stormwater Detention tank is a stand-alone tank but mostly it is combined with a retention tank.

A Retention Water tank is the normal water tank that is installed to catch or harvest rainwater (often from your roof via gutters and pipes) so you can store it and use it whenever you want to in the future for a wide range of purposes such as cleaning, irrigation and household purposes.

In a very heavy storm however, Water Retention tanks can quickly fill up and overflow. Stormwater Detention tanks usually release water over a period of time so that space can be kept in them to detain the water from future heavy storms.

Stormwater Detention Tank

Round Stormwater Detention Tanks

Stormwater Detention Tank Slimline

Slimline Stormwater Detention Tank 

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."

Stormwater Detention System

If you are combining the two purposes then you might have a 5,000 litre water tank where you use the bottom 4,000 litres for your garden and cleaning etc while keeping the top 1,000 litres available to catch and detain the sudden rush of stormwater and then release it into the environment via drains etc at a much slower speed.

Select Water Tanks can build you a Stormwater Detention tank, a Rainwater Retention tank or tanks and/or a combination of a Stormwater Detention and Rainwater Retention tank or tanks to your specification.

They can be either round or slimline in shape, and they can be made from: Premium grade 304 Stainless Steel, Marine grade 316 Stainless Steel, or Aquaplate /Colorbond in a variety of colours.

Select Water Tanks can build your tank or tanks to a wide range of sizes and will also place the fittings (Inlet, Overflow, Outlet, and Detention Valve) to suit your specific requirements. Some indicative prices for a range of popular size water tanks can be found at on our water tank pricing page.

Stormwater Detention Tank Cost

For a list of prices on our most popular Steel Stormwater Detention Tank Sizes.
Please click below or contact us.

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.