20000L Water Tanks

20000L Water Tanks | Custom Made from Stainless Steel & Genuine Colorbond / AQUAPLATE® Material Material | Designed for Substantial Storage | Fire Resistant Steel | 20000L Water Tanks Prices | Extended Warranty


Please note: not all dimension combinations are available

20000L Water Tanks BAL ratings or BASIX Requirements

With new regulations implemented after past bushfire seasons, the BAL Rating system [Bushfire Attack Level] gives guidelines for properties on Bushfire prone land. Part of these recommendations are to have a dedicated fire tank [water stored for the sole purpose of firefighting].

The tanks can be made to have the Storz fitting [NSW] or Camlock fitting [Qld] installed to meet the local council requirements for the BAL Rating, on your property.

Material Options

304 Grade Stainless Steel, 316 Marine Grade Stainless Steel, Colorbond / AQUAPLATE®

20000L Water Tanks – Your Path to Water Independence

Discover water self-sufficiency with our 20000L water tanks, designed for substantial water storage.

This large tank enables you to significantly supplement your mains water supply, reducing dependence on it. In some fire-prone areas, local councils require this tank size as a minimum.

Customisation is available. For example, a 20000 litre tank can be around 3300mm wide and about 2350mm high or narrower but taller, at around 2900mm wide and about 3100mm high. Contact us for tailored solutions.

All Our Steel Water Tanks Come with Three Standard Inclusions. Upon ordering your tank(s) you will be asked to place on a diagram where you want the fittings located.

  • Inlet Strainer 400 mm
  • Mosquito-proof overflow 90/100 mm
  • 25mm outlet with a tested Ball value

Water Tank Delivery

Select Water Tanks will make sure your new water tank is delivered and positioned correctly on your base. We can also assist and coordinate with a crane operator if required. We use delivery zones to provide an estimate on your delivery costs.

Estimated Water Tank Delivery Fees

What is O Size? Tanks 2.6m high or round tanks with a 3.7m diameter create an oversize load when transported on the road.

Distance Standard O Size
0-50km $180 $220

For distances further than 50km please calculate your distance from our factory below and contact us for a quote.


Need a different size?

Custom water tanks is what we do and we have thousands different sizes available to suit your requirements.

Generate Your Quote Below

Use the fields below to generate a full quote request. If you are not sure with any of these - just select “Not Sure” and we can confirm with you once we finalise your order

Colorbond / AQUAPLATE® finishes (Not available for Stainless Steel)

Choose from the following genuine Colorbond / AQUAPLATE® finishes (For Colorbond tanks only)

None Not Sure Pale Eucalypt Windspray Woodland Grey Surfmist Paperbark Monument Shale Grey Galvinised

Additional Fittings

Best practice for larger tanks is to also include a High suction (HS) fitting. This is a 50mm outlet and ball valve installed on the corrugation above. This allows for efficient water balancing when other tanks are connected. The HS Fitting also protects the pumps and internal water appliances as it draws only clean water from above the sludge / anaerobic level.

You may also wish to purchase a Bucket Height Tap for example, where the tap is placed high enough from the base, to allow gravity feed of water, into a bucket placed under the tap.

Additional Outlets Stainless Steel

If you require any additional outlets for your stainless steel tank please add them below.

Additional Outlets Colorbond

If you require any additional outlets for your Colorbond tank please add them below.

Pay a deposit of 20% per item

20000L Water Tanks

Example Price List 2024

304 Stainless Steel Tanks

Capacity (litres) Diameter x Height (mm) Price
20,108 3300 x 2350 $4,850
20,484 2900 x 3100 $5,640

316 Stainless Steel Tanks

Capacity (litres) Diameter x Height (mm) Price
20,108 3300 x 2350 $6,300
20,484 2900 x 3100 $7,640

Colorbond / AQUAPLATE® Tanks

Capacity (litres) Diameter x Height (mm) Price
20,108 3300 x 2350 $4,170
20,484 2900 x 3100 $4,535

20000l Water Tanks

Frequently Asked Questions

How big is a 20,000 litre water tank?

We can build our round rainwater tanks with a capacity from as little as 190 litres to a huge 29,800 litres, with diameters from as little as 900mm to 3700mm wide, and heights from 300mm to 3100mm tall. The popular sizes for 20000l water tanks are typically.

  • 3300mm Wide x 2350mm High
  • 2900mm Wide x 3100mm High
How long will 20,000 litres of Water Last?

On average in Australia, we consume 340 litres of water per person per day.

So, 20000l water tanks will last approximately:

  • 58.82 days for 1 person
  • 29.41 days for 2 people
  • 14.71 days for a family of 4

These calculations are based on the same assumption of a constant consumption rate of 340 litres per person per day.

Can I use 20000l water tanks as a fire reserve for my property?

Yes, steel water tanks can be utilised as fire reserves for properties. They can provide an additional source of water for firefighting purposes, contributing to improved fire safety.

20000l water tanks are commonly chosen to comply with BAL ratings or BASIX requirements in certain areas.

Learn more about Bushfire Water Tank Requirements

Are permits or approvals required to install a 20,000-litre steel water tank in Queensland

Yes, permits or approvals may be required to install a 20,000-litre steel water tank in Queensland, Australia. The specific regulations and requirements can vary depending on the local council or governing body in your area. It is essential to consult with the relevant authorities to determine the specific guidelines and obtain any necessary permits before installing the water tank.

In Queensland, the regulations regarding water tank installation and rainwater harvesting can be governed by local councils, state government departments, or specific legislation such as the Plumbing and Drainage Act 2018. These regulations are in place to ensure proper installation, compliance with safety standards, and protection of the environment.