Off Grid Water Storage

Water Tanks for When You Have No Access to Mains Water

No Mains Water Supply? No Problem.

At last estimates by the Australian Bureau of Statistics, 832,100 households used a rainwater tank as their main source of drinking water – 84% of which were located outside of our capital cities.

Outside of capital cities, 31% of homes rely on rainwater tanks in some way or another, and more than half a million households have no access to a mains water or town water connection – leaving an estimated 1.5 million Australians to rely on rainwater harvesting systems or groundwater as a water source for their home.

The good news is, due to having sensible rainwater harvesting laws, these families aren’t without access to clean drinking water or adequate water supply for their showers, washing machine, toilets or other areas of their property.

Pioneer Water Tanks has been manufacturing large steel water tanks for Western Australian families for more than 30 years, and understands the importance of high quality rainwater storage and rainwater harvesting systems.


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.

Setting up an off grid water system

Whether you have access to mains water at your property or not, you may be looking to set up an off grid water system. There are a number of reasons for this, from avoiding water restrictions for lawns and gardens, to reducing your monthly water bill, to wanting to be more environmentally conscious and overall self sufficient.

Many people will even choose to install a grey water system to lower their water consumption in the garden, have multiple rainwater tanks in order to be able to harvest both rainwater and ground water for different uses around the property, or simply install a rainwater tank for drinking water and food preparation.

Whatever your reason for wanting to move your water storage off the grid, Pioneer  Water Tanks is here to help find the water storage option that is best for you, with a range of rainwater storage solutions that will ensure that your water consumption needs are met for years to come.

Is rainwater safe for drinking?

If you are going to be using your rainwater collection for drinking and food preparation, you are of course going to want to know if your newly harvested rainwater is suitable for use as potable water. While there is no perfect yes or no answer to this question, in non-urban parts of Australia, away from main roads and industrial property, rainwater is typically safe to use as a water source for drinking water.

The Western Australian Department of Health has guidelines for safe consumption of rainwater, that outline the importance of keeping your rainwater catchment areas clean from animal droppings, debris or smoke, as well as not harvesting rainwater from roofs or areas of a roof that are made from preservative treated wood, coated with bituminous products coated with lead based paints (including any gutters), near a chimney from a wood burner, near discharge pipes from roof-mounted appliances such as evaporative air conditioners or hot water systems, contain chemically treated timbers or have any lead-based paints or flashings.

Outside of this, in most cases your water tanks will be safe to drink from, provided that you are keeping your gutters, pipes and other areas of your rainwater harvesting system clean. If you are still concerned, you can install a water filter at any taps, or even have one installed in the plumbing entering the home or property.

Healthy water with Aqualiner Fresh®

Taking it one step further when it comes to protecting your drinking water quality, is the Pioneer exclusive Aqualiner Fresh® antimicrobial water tank liner.

This liner is made using Sanitized® technology that employs the antibacterial qualities of silver ions, helping your water tank keep your water supply clean from the inside.

The Aqualiner Fresh® comes standard with all water tanks from 12,000L to 367,000L, and is made to last, with its 5 layer dual seam welded design strong enough to hold water on its own without the protective shell.

To learn more about how the Aqualiner Fresh® water tank liner keeps your water supply clean, fresh and healthy, check out the attached video. 

What size rainwater tank do I need?

What size rainwater tank is best for your home depends on a range of factors – even if you are using it as your primary water source. Factors such as annual rainfall (mm),  roof size (m²) and the number of residents in the home are the major determinate factors. 

You can calculate your annual rain harvesting ability by multiplying your roof size by your average annual rainfall, which would look something like the equation below:

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

300  x 850mm = 255 000L

A general rule of thumb recommended by Pioneer Water Tanks is to multiply the number of people in the house by 30,000L, and then add another 30,000L on top to arrive at a safe minimum for your household’s required level of water storage. So for two people; 90,000L, for three people 120,000L, for four people 150,000L and for six people 250,000L and so on.

It is of course important to remember is that these figures are a simple rule of thumb, and each household’s water supply requirements are different. While things like drinking water won’t differ much from home to home, you may have gardens you would like to upkeep or enjoy a longer shower or the occasional bath.

Pioneer Water Tanks also are also available with an optional 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.

Water Tank Sizes

For the range of water tank sizes available from Pioneer Water Tanks, consult the table below. If you are unsure what size water tank would best suit your needs, contact us today, and one of our customer service staff will be more than happy to help you find the best option for your home.

pioneer water tank sizes and dimensions
pioneer water tank sizes and dimensions

The Litres/Gallons stated above are gross capacities. Actual useable volume will vary depending on the size and position of inlets and outlets.

Water storage systems built to last

When you buy a Pioneer Water Tank, you’re making an investment, not only in shoring up your water supply, but in your future. Pioneer understands that a rainwater tank is an investment, and as such it is important that it’s money well spent, and your purchase is going to last you for decades to come.

Stronger steel with Pioneer V-Lock®

Despite looking at first glance like the a Colorbond ® fencing sheet, or even like a traditional corrugated iron panel from a distance, the Pioneer Water Tanks tank wall panel has been engineered specifically for use in water storage applications.

The Pioneer V-Lock® is designed for strength and durability, so that we can put the steel where it matters most. It’s the reason Pioneer Water Tanks are able to last as long as they do, and it even won an Australian Design Award for its strength and aesthetic appeal.

The Pioneer V-Lock® also works to protect the Aqualiner Fresh® water tank liner from inside the tank, with the V-Lock pattern preventing stretching and wear as the tank fills and empties that is associated with traditional corrugation.

All Pioneer V-Lock® panels are made from genuine Zincalume® or Colorbond® steel, and are available in a range of colours to suit your home, shed or property.

Australian made and owned

Unlike many competitors, Pioneer Water Tanks remains 100% Australian Owned and Operated, and all of our water tanks are manufactured in our head office and manufacturing facility in Bellevue, just east of Perth, right here in Western Australia.

Even the tanks themselves are installed by small – typically family run – businesses across Australia, with more than 10 authorised dealers in Western Australia alone, who are experts in the installation, service and maintenance of Pioneer Water Tanks.

Maintaining these tight levels of control over each and every step of the manufacturing and installation process allows Pioneer to ensure that the water tanks are built to the highest standard, and will provide a reliable water source for you and your family for decades to come.

The Pioneer 20/20 Warranty

Pioneer Water Tanks have been supplying the best quality rainwater tanks for drinking water and household use to Australian families since 1988. Most of the tanks built by Pioneer in that first year of business are still standing today, a testament to the high levels of control and quality materials go into each and every Pioneer water tank.

In fact, Pioneer Water Tanks are so confident that your water storage will last, that all water tanks in the GT range (that’s 12,000L to 280,000L) come with a 20 year conditional structural warranty, as well as a 20 year warranty against water leakage.

Let Pioneer Water Tanks help you get off grid

Whether you need a water source due to the fact you have no access to mains water or city water supply, you want to move your water storage off-grid, or simply want to reduce your water bills and restrictions around water usage, contact Pioneer Water Tanks today on 1800 999 599, or simply click here and fill out the attached form and one of our expert installers will be in touch with a quote and more information.

Frequently Asked Questions

Will I need a pump for my rainwater tank?

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.

How can I get water without a well?

One of the longest performed forms of water harvesting for people with no access to mains water has been to dig wells or bores to access a water table. However, there is a much easier way to sure up your water security with clean water that can be used as drinking water; rainwater harvesting. Most homes in Australia have adequate roof space and rainfall to fill up a rainwater tank that will supply sufficient supply for their water use.

How much water do I need to store?

The best way to calculate what size water tank you require, and as such how much water you need to store, is first to calculate how much water you use annually – at least roughly – and then aim a little bit higher than that. You don’t want to find yourself running out of water.

When it comes to how much water you can harvest, a simple rule of thumb is to multiply your rainwater harvesting roof area by your annual average rainfall, and you will be able to calculate the amount of rainwater you can harvest annually from there.

What are the most common types of off-grid water storage?

The most common types of off grid water storage are water tanks – both rainwater and bore water – and dams. Rainwater tanks are the prevailing choice for those in need of drinking water for their home, and are available in a variety of materials, including steel, polyethylene (plastic), concrete and fiberglass.

How do I switch from mains to a water tank?

If you have installed a water tank to become your main water source, but also live in an area where you have access to mains water, you can maintain both as options for multiple water sources, or simply remove yourself from the mains water supply all together. If you want to keep mains water available as a water source, you can install a switching device, which prevents backflow into the mains system, but allows you to open up the pipes to your water supply if your water storage gets low or empty.