25000 Litre (5500 Gallon) Water Tanks

25,000L water tanks are an excellent large sized tank with so many uses.

Round Water Tanks

Please note: Tanks larger than 3500mm diameter have a max height of 2350mm

This large round water tank would enable you to become more independent of your mains water supply and provide you with a good supply of rainwater for your domestic/household or rural/horticultural needs.

Select Water Tanks can customize the size of your water tank to fit your needs. For example, a 25000-litre tank could be around 3200mm wide and around 3100mm high or be less in width but taller in height- eg around 3700mm wide by around 2350mm high. Contact us for your specific needs.

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25000 l Water Tank Dimensions

25000 Litre Stainless Steel Water Tank 2
25000 Litre Stainless Steel Water Tank 3
25000 Litre Stainless Steel Water Tank 4
25000 Litre Stainless Steel Water Tank

Stainless Steel or Colorbond?

All our 25000 Litre Water Tanks can be made from 304 or 316 Stainless Steel or Colorbond.  Stainless Steel version contains no plastic whatsoever, keeps the water cool and in good condition and is often being designed as a feature by architects and builders. Colorbond steel provides a more cost effective option and a range of colors to choose from.

For any help or advice on selecting the best material, size and shape please do contact us below.

25000 Litre Water Tank FAQs

How much does a 25000 litre water tank cost?

The price of a 25000 Litre water tank depends on the size and dimensions check our our water tank price lists.

How big is a 25000 litre tank?

The size of a 25000 Litre water tank depends on your requirements. Select Water Tanks can customise your water tank to your needs. Check out our 25000l water tank dimensions

Why stainless steel?

There are many reasons you should consider buying a stainless steel water tank.

They include:

  • They come with a 30-year warranty for corrosion and so are cost-effective over time.
  • The minerals used in stainless steel are valuable and so can be recovered and recycled.
  • They are being designed into structures by builders and architects because they look good.
  • University research shows they hold their structural integrity during a bush fire.
  • Stainless steel keeps the water cool which helps reduce the growth of bacteria and algae.
  • Stainless steel does not leech impurities into the water which makes it hygienic to drink.
Why Aquaplate / Colorbond?

Aquaplate/Colorbond tanks are slightly less expensive than ones made from stainless steel and they come in a range of colours to match or compliment existing structures or colour schemes. These tanks come with a 20-year warranty for corrosion and a 10 year manufacturers warranty. Research has shown, that they keep their structural integrity during a bush fire.

What fittings come with the tank?

Three fittings come with your tank. You will be asked where on each tank you want them.

They are:

  • A 400mm inlet strainer with light guard which allows the water from your roof for example, into the tank, with protection from the sunlight and mosquitoes.
  • An overflow attachment which is a round plastic outlet which can be either 90 or 100mm in diameter and which come with mosquito proofing.
  • A 25mm outlet with a ball valve located at the bottom of your tank.
How do I work out the size of tank I need?

Normally we recommend that you get the largest size tank you can to suit your site. Round tanks can be made to much larger sizes whereas slimline tanks can be made specifically to fit neatly into a confined space.

Deciding a size can be influenced by a number of factors. These include:

  • The number of people living in a house if it is for domestic use
  • The catchment area of the roof
  • The annual rainfall
Will you position the tank(s) on site?

Yes we can position your tank(s) on to a concrete slab, a crusher dust pad or a timber platform provided they are built correctly to fit the size of tank ordered.

We can provide one or two men if needed but you will need to provide additional staff if the tank is very large or it is a particularly difficult site to access.

If a crane is needed, we can liaise with the crane company.

How are tanks delivered?

Our usual delivery mode is on either a small truck, truck and trailer or 4WD ute and trailer. The round tanks are rolled off onto mattresses which protect the tanks, whereas the slimline tanks are carried or put onto small trolleys for manoeuvring and then depending on the site access being suitable, rolled or manoeuvred close to the prepared tank base.

A geofabric cloth is put down onto the prepared base, then the tank is stood onto its bottom on the prepared base. The tank can then be moved around to the correct positioning.

Depending on the size of the tank some onsite assistance will be required. It is best to discuss any site complications or delivery queries when ordering your tank.

Do the tanks meet Council Overlay requirements?

Yes we can build the tanks to meet specific Council Overlay requirements.

Do you connect the tanks up?

No. We suggest you get a local plumber to connect them up. That way you have a local expert to make them compliant to local conditions.

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.