20000 Litre | 4000 Gallon Water Tank

20,000L Water Tanks are great for heavy water use throughout the year.

This large water tank would provide you with enough water to enable you to substantially supplement your mains water supply and to enable you to start to be independent of your mains supply of water. Some Councils in fire prone areas have set this as a minimum size.

Select Water Tanks can customize the size of your water tank to fit your needs. For example, a 20000-litre tank could be around 3300mm wide and around 2350mm high or be less in width but taller in height- eg around 2900mm wide by around 3100mm high. Contact us for your specific needs.

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20000 Litre Water Tank Dimension & Size Examples

Stainless Steel Water Tank: 22,467 Litres

Type: Aquaplate / Colorbond
Size: 3900mm dia x 1880mm high
Capacity: 22,467 Litres

Stainless Steel Water Tank: 22,600 Litres

Type: Stainless Steel
Size: 3500mm dia x 2350mm high
Capacity: 22,600 Litres

Colorbond Water Tank: 22,619 Litres

Type: Aquaplate / Colorbond
Size: 3500mm dia x 2350mm high
Capacity: 22,619 Litres

Stainless Steel Water Tank: 22,619 Litres

Type: Stainless Steel
Size: 3500mm dia x 2350mm high
Capacity: 22,619 Litres

Stainless Steel or Colorbond?

All our 20000 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.

20000 Litre Water Tank Price List

304 Stainless Steel Tanks

Capacity (litres) Diameter x Height (mm)   Price
22,467 3900 x 1880 $4,615
22,619 3500 x 2350 $4,435

316 Stainless Steel Tanks

Capacity (litres) Diameter x Height (mm)   Price
22,467 3900 x 1880 $5,900
22,619 3500 x 2350 $5,640

Colorbond Steel Tanks

Capacity (litres) Diameter x Height (mm)   Price
22,467 3900 x 1880 $3,715
22,619 3500 x 2350 $3,510

20000 Litre Rainwater Tanks

If you need any help with Pricing, Custom Sizing, Delivery Charges or anything else
Please contact us below.

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.