Rainwater Tanks for Your Home

Pioneer Water Tanks - Residential Water Storage

Water Tanks for Your Home

There are more than two million homes in Australia that have some form of rainwater tanks installed for water storage on the property, making up at least some part of their water supply.

With 93% of Australian homes connected to mains water; the majority of these homes are using that water as a supplementary water supply to mains water – for uses including drinking, washing, bathing, laundry and gardening – while thousands of Australians outside of capital cities still rely on rainwater tanks as their primary source of water.

Water storage of all kinds continues to increase year on year for suitable homes, as the price of distributed water in Australia increases, and water regulations due to drier weather and increasing population put a crunch on water supply.

Pioneer Water Tanks have been making large steel rainwater tanks for Western Australian homes for more than thirty years, with a range of water tank sizes from 12,000L to 500,000L; there are options available for all sorts of water storage needs.


Pioneer Water Tanks have provided a service for Western Australia since 1988. Our high quality Australian-made water tanks will provide the long-term water security you’re looking for.

Rainwater Harvesting in Western Australia

For the home

While most people have access to mains water, living in towns and cities across Australia, there are many living in the rural reaches of Western Australia with no access to mains water, and for those families tank size is important, as they rely on tank water as their primary water source.

This makes a large steel tank the best option for these households who rely on rainwater tanks for their entire household water supply, including drinking water, bathroom and laundry water use.

Large steel rainwater tanks are typically quite easy to fill in areas with adequate rainfall, correctly fitted gutters, and a reasonably sized catchment area. The average home in Perth would be able to harvest upward of 175,000L of rainfall from its roof annually, comfortably filling a 110,000L rainwater tank each winter.

The Australian Bureau of Statistics estimated that 12% of total household water use comes from rainwater tanks in homes across Australia, with that number set to grow, as one of the major indicators for why people were purchasing rainwater tanks for their home in areas with mains water was due to the price of water corporation supply.


For the garden

Many people who live in suburban or semi-rural areas who do have access to mains water storage install rainwater tanks in their homes in order to reduce water usage in other areas.

One of these areas – particularly with water restrictions put in place by the Water Corporation in summer in Western Australia – is the garden, as having your own rainwater storage allows you to water your gardens more freely, and keep them green and cool throughout the hot summers.

These tanks are typically small poly tanks, either in the form of slimline rainwater tanks, rain barrels, or even underground tanks. An underground tank is convenient space wise, but difficult to repair or maintain, while a slimline tank or poly tank is the go to for many homes.

Many people will often cycle these tanks through a greywater system, in order to waste less water, and to make these small rainwater tanks storage go further.

two poly water tanks on a rural property in front of a dramatic sunset

For the laundry

Another place many will try and cut back on their water bill or overall mains water usage is in the laundry or bathroom, where the most water is used in the home.

Having a small round tank or slimline rainwater tank that is able to supply water to the washing machine can greatly cut back on mains water usage in the home.

With the right plumbing, these tanks can even be linked up to a water heater, providing warm tap water to the sinks, shower and washing machine.

a slimline poly water tank down the side of a suburban home

Setting Pioneer Water Tanks Apart

Aqualiner Fresh® antimicrobial water tank liner

Pioneer Water Tanks continues to lead the way in water with the exclusive Aqualiner Fresh® antimicrobial water tank liner, revolutionising water storage by introducing a water tank liner that is designed to keep your rainwater fresher, cleaner and healthier for longer.

The Aqualiner Fresh® water tank liner works with Sanitized® technology, utilising the natural antibacterial properties of sliver woven into the liner, in order to prevent microbes, bacteria or mildew from forming on your liner.

Pioneer’s Aqualiner Fresh® antimicrobial tank liner is the only rainwater tank liner in Australia that doesn’t just meet, but improves on Australian standards, and is included standard in all of our water tanks from 12,000 litres to 280,000 litres.

Pioneer V-Lock® tank wall profile

Another area Pioneer strives to improve on water storage standards is in the signature Pioneer tank wall profile, which has been designed by our team of in-house engineers for the specific purpose of water storage.

Pioneer puts the steel where you need it most, so the panel thickness is determined by the size of your tank, and with Pioneer’s 20 year warranty, you can rest easy that your water is safe and secure in one of Pioneer’s rainwater tanks.

In addition from being the strongest tank wall panel on the market, our innovative wall profile also provides a clean, modern look which is pleasing to the eye – good enough to win an Australian Design Award for its strength and aesthetic appeal.


20/20 Water Tank Warranty

A large steel water tank is an investment, and it’s important to make sure these investments are protected, and stand the test of time. The V-Lock® wall panels of every Pioneer Water Tank is made from Australian made Colorbond® or Zincalume® steel, and the Aqualiner Fresh® water tank liner is made from a five-layer reinforced fabric.

Every Pioneer rainwater tank in the rural range (GT10 – GT280) comes with a Pioneer’s 20/20 warranty. That’s a 20 year conditional structural warranty in addition to a 20 year conditional warranty against water leakage.

Most of the tanks installed by Pioneer way back in 1988 in the first year of business still stand to this day, more than 30 years later, servicing homes and farms across the country – a testament to the durability of these rainwater tanks.

What size rainwater tank do I need?

The size of rainwater tank that would be best for your home is dependent on a number of factors – even if you are using it as your primary water source with no access to mains water. These factors are things like your annual rainfall (mm),  roof size (m²) and the number of residents in the home are the major determinate factors. 

Things you will need in order to calculate a rough number for the size of rainwater tank for your home are:

  • Rain Harvesting Area (roof of home or any sheds with gutters)
  • Average Annual Rainfall
  • Household Water Usage
You can calculate your annual rainfall harvesting ability by multiplying your roof size by your average rainfall, which would look something like the equation below:

Roof Size (m² ) x Annual Rainfall (mm) = Rainwater Harvesting Ability

300m²  x 850mm = 255 000L

For the average household sizes, Pioneer Water Tanks typically recommends the following size water tanks:

  • 2 Persons: 90 000L
  • 3 Persons: 110 000L
  • 4 Persons: 150 000L
  • 6 Persons: 250 000L

It is important to remember these figures are simply recommendations, and should not be seen as exact. Some households have higher or lower demands than others, and some have larger roof space, and may choose to harvest additional rain in order to water gardens, lawns or animals. 

Pioneer Water Tanks also come with the option of an additional fire reserve of up to 20 000 litres, so if you are looking to use your rainwater tank for fire protection, you may want to keep in mind the extra storage when purchasing your water tank.

Customise your Rainwater Tank

Water Tank Accessories

In order to make your rainwater tank perfect for your home, you may choose to add accessories like a level gauge, our smart water savers or a Colorbond® colour that best matches your home.

Standard Water Tank Acessories

aqualiner fresh layers example antimicrobial water tank liner

1 x Exclusive Aqualiner Fresh® Water Tank Liner

a 50mm outlet with ball valve fire fitting for steel water tanks

1 x 50mm Outlet & Ball Valve

a pioneer water tanks stainless steel leaf filter basket for steel water tanks

1 x  Stainless Steel Leaf Filter Basket or 50mm Inlet

a galvanised steel ladder for large steel water tanks hook on ladder with bracket

1 x Hook-On Galvanised Ladder with Bracket

pioneer water tanks hinged galvanised steel roof access hatch water tank access hatch

1 x Heavy Duty Hinged Access Hatch

a pioneer water tanks 150mm overflow 150mm bellmouth

1 x 150mm Overflow, Downpipe and Flap Valve

a single annode bag sacrificial anode for steel water tank corrosion protection

1 x Set (2) of Anodes

Optional Water Tank Accessories

ball valve outlet for steel water tanks

Fire protection valve and fire water reserve to shire standards

an analogue water level indicator with float valve and weight

Digital or traditional water level indicators

four pioneer water tanks smart water savers tank roof gutter system pieces

Gutterless tank roof rainwater harvesting system

a close up photo of water tank liner protection water tank underlay fabric geotextile underlay

Geotextile underlay to protect liner from damage

SuperSeal water tank dustproofing and vermin protection for water tank freshness

SuperSeal dustproofing condensation strip pack

Rural Water Tank Colours

Your rainwater tank should be a feature of your home, not an eyesore. This is why Pioneer Water Tanks offers a range of standard and non standard Colorbond® colours – as well as a traditional Zincalume® finish – for your water tanks, allowing you to personalise your rainwater tank to your home.

Colorbond® Rainwater Tanks

Standard Colorbond® Water Tank Colour Range



Classic Cream™

Woodland Grey®




Pale Eucalypt®

Non-Standard Colorbond® Water Tank Colour Range

Dover White™

Evening Haze®



Shale Grey™





Night Sky®


Deep Ocean­®

Cottage Green®

Manor Red®

pioneer water tanks range of colorbond colours for colorbond water tanks

Pioneer can help you find the perfect rainwater tank for your home

If you’re interested in a water tank for your home, give get in touch with us on 1800 999 599, or by simply clicking here to request a quote for a rainwater tank today; and one of our dealers will be in touch with your customised water tank pricing.

Frequently Asked Questions

Are rainwater tanks worth it?

For many Australians, water tanks aren’t just worth it, but a necessity. For the more than half a million households in Australia who don’t have access to mains water, a rainwater tank for their house or farm is the only way to ensure they have reliable access to clean drinking water year round.

For households who don’t need rainwater tanks to survive, there are also many benefits, including; being able to more freely water gardens and lawns, saving money on water bills, or by coming completely self sufficient from scheme water if you have the space for a large enough water tank.

Which type of water tank is best for home?

This will entirely depend on what you are using it for, as different requirements for space and size will call for different water storage solutions – as will if you will be drinking the rainwater from your water tank.

For smaller tanks, poly is more affordable and comes in shapes that can conveniently fit on suburban blocks, and don’t require a sand pad in the way large steel tanks do. However when it comes to longevity, fire protection and sustainability, steel rainwater tanks win hands down. They have been proven to last over 30 years, are the best rated water storage for fire protection, and the steel sheets and trusses are fully recyclable at the end of their service life.

How long do water tanks last?

Poly rainwater tanks are made of a UV treated food safe plastic, and should last upward of 10 years, with some poly tanks expected to last as long as 20 years before they start to destabilise, while Steel Water Tanks last well upward of 20 years, and as they are modular and repairable; can continue to be repaired for years after. Most Pioneer Water Tanks installed over 30 years ago are still in full operation to this day.

Do rainwater tanks need a pump?

This depends on where the water tank is situated. Above ground tanks, situated no more than the recommended 50cm below the gutter for every meter from the home they are, shouldn’t need a pump as the weight of the water inside the tank is typically enough to gravity feed the water back into the home. For smaller tanks, rainwater storage located further from the home, or when tanks are close to empty, a pump may be required.