Round Water Tanks

Quality Round Duraplas Tanks from Australia’s #1 Rated* Rainwater Tank Company

Unbeatable quality and value with New Generation™ Polytank Technology

"Our New Generation™ Round Tanks offer amazing affordability, and style in a huge range of capacities"

Matt - Team Member

Quality You Can Count On with a Duraplas Tank

"We deliver peace of mind with 20yrs warranty on our entire round poly tank range"

Felicia - Team Member

"Join thousands of satisfied customers and order direct from The Tank Factory"

Adam - Team Member

Buy with confidence from Australia’s #1 Rated Round Tank company (according to ProductReview.com.au — Australia’s Largest Consumer Opinion Site). Duraplas designs tanks to withstand harsh Australian conditions. A proven and reliable 20-year warranty (10 + 10) also covers the range. Join thousands of satisfied customers and order your next Duraplas tank direct from The Tank Factory.

Browse our comprehensive tank range below:

Further Information on Round Water Tanks

Duraplas uses superior and unique computerised manufacturing techniques to produce high-quality poly water tanks. These methods also support a more environmentally conscious manufacturing process.

Water conservation has become a major concern across Australia. Many local councils now place restrictions on water use, especially during long and unpredictable dry periods. As a result, rainwater tanks now support both rural and urban properties.

A tank allows you to harvest rain and use stored water when needed. Therefore, you gain more flexibility with your water usage.

Why Choose a Rainwater Tank?

Collecting rainwater can help maintain a more regular supply of water throughout the year. However, actual supply depends on tank capacity, rainfall and how often you use the stored water.

With your own rainwater supply, you can better manage how much water you use and where you use it. In many cases, this can help reduce the impact of council water restrictions.

For example, you may still be able to maintain gardens, wash vehicles or support outdoor projects when restrictions limit mains water use. In addition, your monthly water bills may decrease if your household uses less mains water.

Modern Poly Rainwater Tanks

Our comprehensive range of modern poly rainwater tanks is designed to endure the test of time. Many models also come with a 20-year guarantee.

Duraplas uses modern computer-aided manufacturing processes to build each tank to a high standard. Therefore, customers can expect reliable long-term service when the tank is installed and maintained correctly.

Round Water Tanks and Cylindrical Tanks

The Tank Factory supplies a wide range of quality tanks, and we’re sure to have the right plastic tank for your home or business.

One of the most popular types of poly tanks in Australia is the round water tank. These tanks are also known as cylindrical tanks.

Round tanks suit both rural and urban properties. They work well where there is enough room beside a house, shed, garden area or rural building.

Our range of round water tanks comes in a large choice of colours. Therefore, you can choose a tank colour that works with your house, shed or property setting.

Duraplas tanks comply with ‘Product Certification to AS/NZS 4766’.

Popular Round Tank Sizes

We offer an impressive range of tank options. One of our most popular choices is our 20,000 litre tank. We manufacture an average of 45 of this model each week.

This tank offers a large amount of water storage and excellent value. Another common choice is our 10,000 litre tank, which is a great mid-sized option.

Our 5,000 litre and 3,000 litre models are also very popular. They suit both rural properties and urban backyard settings.

If you need something smaller, our R2720 model offers more than 2,500 litres of rainwater storage in a compact format. We also offer more compact 1,000 litre tanks, as well as models as small as 300 litres.

Browse our full range below to compare sizes, dimensions and prices.

Round Tanks, Slimline Tanks and Underground Tanks

Our poly range uses polyethylene, which is also known as poly. These polyethylene tanks are durable and available in a wide range of colours.

Round water tanks do use a considerable amount of space. However, this works well for many rural, residential and commercial sites.

If your property has limited space, you may prefer one of our slimline water tanks. If a slimline tank still needs too much room, an underground water tank may suit your site better.

Underground tanks can be hidden below ground and completely out of sight. Therefore, they can be useful where yard space is limited.

Round Tank Capacities

The capacities of our round water tanks vary across the range. The smallest round tank we supply holds around 300 litres of water.

At the larger end of the range, our biggest round tank can hold more than 30,000 litres. As a result, we’re sure to have a tank to suit many different water storage needs.

Please browse our range of quality tanks and order online. Alternatively, contact our friendly staff if you have questions that are not already answered in our FAQ section.

Showing all 21 results

$700.00
R360 Litre Rainwater Tank

360 Litre Round Polyethylene Water Storage Tank

Nominal Dimensions: Diameter 720mm, Height 1015mm, Inlet Height 1015mm
Shot Weight: 25kg – Strainer Diameter 300mm

The ideal small tank for fresh drinking water, emergency water supply or your BBQ area. Small, strong, light weight, and available in a large range of colours.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$785.00
R565 Litre Rainwater Tank

565 Litre Round Polyethylene Water Storage Tank

Nominal Dimensions: Diameter 720mm, Height 1595mm, Inlet Height 1595mm
Shot Weight: 32kg – Strainer Diameter 300mm

This water tank features a real space saver design. The small ‘footprint’ makes the R565 ideal for tight areas, such as patios, veranda’s etc. Ideal for drinking water or a back up water supply.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$895.00
R700 Litre Rainwater Tank

700 Litre Round Plastic Poly Water Storage Tank

Nominal Dimensions: Diameter 720mm, Height 1955mm, Inlet Height 1955mm
Shot Weight: 38kg – Strainer Diameter 300mm

Slightly larger than the R565, this water tank again features a real space saver design. The small ‘footprint’ makes the R700 ideal for tight areas, such as patios, veranda’s etc. Ideal for drinking water or a back up water supply.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$925.00
R1200 Litre Rainwater Tank

1,200 Litre Round Polyethylene Water Storage Tank

Nominal Dimensions: Diameter 1070mm, Height 1555mm, Inlet Height 1555mm
Shot Weight: 50kg – Strainer Diameter 400mm

This water tank is an ideal size to supplement your water supply, holding over 1,000 litres. Perfect for your home vegetable garden.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$950.00
R1555 Litre Rainwater Tank

1,555 Litre Round Polyethylene Water Tank

Nominal Dimensions: Diameter 1070mm, Height 2045mm, Inlet Height 2045mm
Shot Weight: 70kg – Strainer Diameter 400mm

This Tank is a taller version of the R1200, ideal for areas where there isn’t a lot of room for a large diameter tank, but there is space for a higher profile.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$975.00
R1800sq Litre Squat Rainwater Tank

1,800 Litre / 400 Gallon Round Poly Water Storage Tank

Nominal Dimensions: Diameter 1560mm, Height 1220mm, Inlet Height 1170mm
Shot Weight: 60kg – Strainer Diameter 400mm

This rainwater tank offers almost 2,000 litres of water storage and would make the perfect header tank and suit both ground or stand positioning. Low squat profile provides a low inlet height. Offering almost 2,000 litres of rainwater storage this tank can also be used in a backyard setting, for barbecues, watering a small garden or perhaps connecting to your garden shed.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

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$1,100.00
R2720 Litre Upright Rainwater Tank

2,720 Litre Round Polyethylene Water Storage Tank

Nominal Dimensions: Diameter 1430mm, Height 2000mm, Inlet Height 1950mm
Shot Weight: 75kg – Strainer Diameter 400mm

Do you need water supply for your weekender, cabin or backyard? This water tank is ideal, and conveniently tucks away in a corner. The R2720 offers more than 2,500 litres of rainwater storage. It features New Generation Polytank™ design and an impressive warranty.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

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$1,125.00
R3000 Litre Rainwater Tank

3,000 Litre / 660 Gallon Round Poly Water Storage Tank

Nominal Dimensions: Diameter 1600mm, Height 1850mm, Inlet Height 1800mm
Shot Weight: 87kg – Strainer Diameter 400mm

This quality 3,000 litre water tank is the ideal size tank to meet ‘basix’ or local government requirements. Supply water to your toilets and washing machine and save money.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

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$1,250.00
R3900sq Litre Squat Rainwater Tank

3,900 Litre Round Poly Water Storage Tank

Nominal Dimensions: Diameter 2170mm, Height 1400mm, Inlet Height 1250mm
Shot Weight: 100kg – Strainer Diameter 400mm

If height is a problem, then this water tank is for you. The perfect replacement tank for the old rusty 1,000 gallon gal tank on a stand. Low squat profile provides a low inlet height

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$1,275.00
R4100sq Litre Squat Rainwater Tank

4,100 Litre Round Poly Water Storage Tank

Nominal Dimensions: Diameter 2170mm, Height 1495mm, Inlet Height 1370mm
Shot Weight: 105kg – Strainer Diameter 400mm

Slightly larger than the R3900sq tank. (If height is a problem, then this water tank is for you. The perfect replacement tank for the old rusty 1,000 gallon gal tank on a stand). Meets rebate requirement for 4,000 litres. Low squat profile provides a low inlet height

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$1,325.00
R4500 Litre Upright Rainwater Tank

4,500 Litre / 1,000 Gallon Round Poly Water Storage Tank

Nominal Dimensions: Diameter 1830mm, Height 2050mm, Inlet Height 1935mm
Shot Weight: 125kg – Strainer Diameter 400mm

The ‘big but small’ tank. Ideal for your urban backyard. Supply water for your vegetable garden or top up your swimming pool.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
Sale!
Original price was: $1,350.00.Current price is: $1,295.00.
R5000sq Litre Squat Rainwater Tank

5,000 Litre / 1100 Gallon Round Poly Water Storage Tank

Take Advantage of our Winter Special!

Nominal Dimensions: Diameter 2175mm, Height 1750mm, Inlet Height 1630mm
Shot Weight: 125kg – Strainer Diameter 400mm

This 5,000L round water tank is the most popular tank size to meet ‘basix‘ or local government building requirements. A great all-round size rain water tank for the average household. Low squat profile provides a low inlet height.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$1,400.00
R5000ur Litre Upright Rainwater Tank

5,000 Litre Round Poly Water Storage Tank

Nominal Dimensions: Diameter 1800mm, Height 2470mm, Inlet Height 2385mm
Shot Weight: 125kg – Strainer Diameter 400mm

Another fantastic tall but narrow upright round tank, 5000 litres of water in a minimal footprint for a round tank.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

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$1,525.00
R5675 Litre Rainwater Tank

5,675 Litre / 1,250 Gallon Round Poly Water Storage Tank

Nominal Dimensions: Diameter 2020mm, Height 2000mm, Inlet Height 1930mm
Shot Weight: 125kg – Strainer Diameter 400mm

Similar advantages to the R5000 but supplying a few more litres. A very popular size poly tank for urban backyard situations.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$1,975.00
R9000 Litre / 2,000 Gallon Rainwater Tank

9,000 Litre / 2,000 Gallon Round Poly Water Storage Tank

Nominal Dimensions: Diameter 2530mm, Height 2020mm, Inlet Height 1880mm
Shot Weight: 175kg – Strainer Diameter 400mm

Replace that old rusty galvanised tank with this size. A great mid-size rainwater tank for the rural or urban house, dairy, shed or cabin.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
Sale!
Original price was: $2,095.00.Current price is: $1,995.00.
R10000 Litre Rainwater Tank

10,000 Litre / 2,220 Gallon Round Poly Water Storage Tank

Take Advantage of our Winter Special!

Nominal Dimensions: Diameter 2510mm, Height 2350mm, Inlet Height 2205mm
Shot Weight: 200kg – Strainer Diameter 500mm

Another very popular ‘basix’ or local government requirement design. This rainwater tank meets requirements for backyard or commercial applications.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 1

Select options This product has multiple variants. The options may be chosen on the product page
$2,625.00
R13500 Litre / 3,000 Gallon Rainwater Tank

13,500 Litre / 3,000 Gallon Round Poly Water Storage Tank

Nominal Dimensions: Diameter 2930mm, Height 2500mm, Inlet Height 2240mm
Shot Weight: 250kg – Strainer Diameter 400mm

Perfect for additional household or rural water storage. Ideal for rural stock water or a header tank.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 2

Select options This product has multiple variants. The options may be chosen on the product page
$3,175.00
R18200 Litre / 4000 Gallon Rainwater Tank

18,200 Litre / 4,000 Gallon Round Plastic Poly Water Tank

Nominal Dimensions: Diameter 3400mm, Height 2540mm, Inlet Height 2260mm
Shot Weight: 350kg – Strainer Diameter 500mm

This water tank is suitable for larger water storage where height is a problem. Suits low set homes, either rural or urban.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 3

Select options This product has multiple variants. The options may be chosen on the product page
Sale!
Original price was: $3,295.00.Current price is: $2,995.00.
R22700 Litre / 5000 Gallon Upright Rainwater Tank (Over 20,000 Litres)

22,700 Litre / 5,000 Gallon Round Poly Water Storage Tank

Take Advantage of our Winter Special!

Nominal Dimensions: Diameter 3550mm, Height 2835mm, Inlet Height 2470mm
Shot Weight: 410kg – Strainer Diameter 500mm

The R22700ur is our ‘most’ popular water tank size by a long shot! It stores over 20,000 litres of rainwater, and we manufacture on average 45 of this model of tank each and every week! It’s perfect for household or rural water supply. Most economical storage per litre. Save $$$. Combo installations produce large water storage volumes.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 3

Select options This product has multiple variants. The options may be chosen on the product page
$3,825.00
R22700 Litre / 5000 Gallon Squat Rainwater Tank

22,700 Litre / 5,000 Gallon Squat Poly Water Storage Tank

Nominal Dimensions: Diameter 4180mm, Height 2220mm, Inlet Height 1900mm
Shot Weight: 450kg – Strainer Diameter 500mm

A true squat 22,700 litre water tank. A perfect tank for low set homes in town, or on your property. A great tank to take overflow water from other higher set tanks.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 4
Note: trailer only delivery, Truck + trailer is 19m long and we require 5m overhead Clearance

Select options This product has multiple variants. The options may be chosen on the product page
$5,350.00
R34000 Litre Rainwater Tank (Over 30,000 Litres)

34,000 Litre / 7,500 Gallon Round Poly Water Storage Tank

Nominal Dimensions: Diameter 4180mm, Height 3050mm, Inlet Height 2750mm
Shot Weight: 600kg – Strainer Diameter 500mm

The big one! A fantastic urban or rural large water storage tank with over 30,000 litres of rainwater storage capacity. Install banks of this size to reach very large storage volumes. Ideal commercial property storage tank.

Standard freight – $195 (standard freight areas, Click Here for Map )
Persons/s required to assist our delivery driver: 4
Note: trailer only delivery, Truck + trailer is 19m long and we require 5m overhead Clearance

Select options This product has multiple variants. The options may be chosen on the product page