Water tanks in the 100,000-litre range are commonly recommended for domestic use in areas surrounding many of Australia’s capital cities, and they typically provide enough water storage for a household of three people. For properties in Wollongong, Shellharbour, Kiama, and the Illawarra region, this size offers a great balance of capacity and footprint.
The GT110 is the closest Pioneer Water Tank model to 100,000 litres, with a gross capacity of 110,166 litres (24,233 gallons). Just below this is the GT90, holding 92,570 litres (20,363 gallons), another strong option for smaller properties or households with lower water usage.
Because of its ideal size, the GT110 is one of the most popular rainwater tanks supplied by NSW Water Tanks. It’s a reliable choice for families wanting dependable storage for household and drinking water—especially for those without access to mains water, or those looking to reduce their reliance on it.
As part of the Pioneer Dealer Network, NSW Water Tanks offers access to the full range of Pioneer’s Australian-made steel water tanks, giving you the flexibility to select the perfect size for your property and rainfall conditions.
If you’re trying to determine whether a 100,000-litre steel water tank is suitable for your needs, you can use our rainwater storage calculator (below) to estimate how much rainfall your roof can harvest. It’s also a good idea to keep track of your household’s water usage to ensure the tank you choose meets your long-term needs.
The table below outlines the dimensions and gross capacities of the GT110 and GT90 models—two of the most popular Pioneer Water Tanks supplied by NSW Water Tanks throughout Wollongong, Shellharbour, Kiama, and surrounding rural communities.
MODEL | Diameter | Height | Litres | Gallons |
|---|---|---|---|---|
GT110 | 8.02m | 2.18m | 110,116 | 24,233 |
GT90 | 7.35m | 2.18m | 92.570 | 20,363 |
We estimate that the average rural household requires around 30,000 litres of water storage per person to maintain a reliable year-round water supply.
To find out how much rainwater you can collect from your roof (your catchment area), use the simple rainwater harvesting calculator provided below. This tool is especially useful for property owners in Wollongong, the Illawarra, and surrounding regional areas who rely on rainwater as their primary water source
As part of the Pioneer Dealer Network, NSW Water Tanks supplies 100,000-litre steel rainwater tanks that Australian families have trusted for more than 30 years. Pioneer Water Tanks continues to lead the industry with a focus on innovation, durability, and long-term performance.
Whether you’re looking for a 100,000L tank or a more compact solution, all Pioneer Water Tanks are manufactured in Australia using premium Zincalume® or Colorbond® Steel. Pioneer remains a proudly Australian-owned, family-operated company, and through NSW Water Tanks, these high-quality tanks are available to properties across Albion Park, Jamberoo, Dapto, and the broader Macquarie Pass and escarpment areas.
As part of the Pioneer Dealer Network, NSW Water Tanks supplies tanks built with innovation and durability in mind. The exclusive Pioneer V-Lock® tank wall profile is purpose-designed for water storage, offering enhanced strength and protecting the liner from the stretching and fatigue often caused by regular corrugated panels during fill and empty cycles.
Each tank is fitted with the Aqualiner Fresh® antimicrobial liner, developed to help keep your stored rainwater cleaner for longer. This added protection not only reduces the risk of bacterial growth inside the tank but can also help minimise long-term cleaning and maintenance costs.
All 100,000-litre Pioneer Water Tanks we supply come backed by Pioneer’s 20/20 Warranty, which includes a 20-year conditional structural warranty and a 20-year conditional warranty against water leakage—giving peace of mind to customers across Oak Flats, Calderwood, Tullimbar, and other semi-rural areas surrounding Wollongong.
This is a volume of water that is always readily available in the event of fighting fire. Commonly this can be up to 20,000 litres.
When looking to irrigate, factors such as water source, harvesting capacity, and usage volume will all need to be considered.
Harvesting water from a roof, filling up from a bore or dam will impact the size of water storage tank that will be most optimal for you.
The size of your roof catchment area, in addition to your annual rainfall will determine how much water you can harvest.
Having an idea of what domestic functions you intend to connect to your tank and how often each will be used will be advantageous.
It’s better to have water and not need it, than to need water and not have it. It may pay to install a bigger tank to mitigate running out of water.
Every 100,000-litre Pioneer Water Tank supplied by NSW Water Tanks comes with a full suite of standard accessories, along with a variety of optional upgrades that can be added to suit your specific water storage needs.
Among the standard inclusions is the Aqualiner Fresh® antimicrobial tank liner, exclusive to Pioneer Water Tanks. This advanced liner is engineered to keep your harvested rainwater fresher for longer, helping maintain water quality for household use.
From Figtree to Mount Kembla, Marshall Mount to Yellow Rock, we provide expert advice on the accessories that best suit your property, usage, and catchment area. Whether you’re looking for simple rainwater storage or a more advanced setup, we can help customise the right solution.
If you’re interested in a quote for a 100,000-litre rainwater tank, give NSW Water Tanks a call today, or simply fill out the contact form on this page and one of our local installers will be in touch to assist you.
As part of the Pioneer Dealer Network, we supply a range of tank sizes around the 100,000-litre mark, including the GT90 with a gross capacity of 92,570 litres, and the GT110 with a gross capacity of 110,166 litres.
We service homes and rural properties throughout Horsley, Wombarra, Broughton Village, and surrounding Illawarra communities, offering expert advice and reliable installation.
The average Australian uses somewhere around 120,000L of water a year, but does that mean you need 120,000L sized water tank for each person in your home? Thankfully the answer to that question is no, as this number is based mostly on suburban figures, where the vast majority of water is used on irrigation and toilet flushing, and the typical rural home uses much less water than this.
We estimate that the average rural home needs about 30,000L of water per person, per year, and if you’re relying on that alone, a rainwater tank that exceeds this figure would be sufficient. Of course, your ability to harvest rainwater is also heavily dependent on your annual rainfall.
Poly Water Tanks typically only come in sizes of up to 50,000L, which typically isn’t enough water supply for any more than two people with no access to mains water supply.
Pioneer’s Steel Water Tank Sizes range from our smaller GT10 which comes in at 12 200L all the way through to our GT500 which has a water storage capacity of 500,000L. Larger or more specific water storage facilities for commercial or industrial applications can also be quoted to order.
Whilst the answer to this is entirely dependent on what size water tank you order, a safe rule of thumb would be to ensure a space 3m wider than the diameter of your desired water tank. This ensures comfortable room for the required 1m on all sides for the pad, and ensures there will be no difficulties at the time of installation.
With over 50 Dealers Australia Wide, we try and make the delivery of our water tanks as efficient and effective as possible. Typically a Pioneer Water Tank is delivered within 3 to 5 weeks of an order being placed. However, if special circumstances require a shorter delivery time, give us a call and we can endeavor to have your water tank installed as soon as possible.
“Water tanks are listed as ‘Gross’ capacity as an industry standard and represents the total volume of water that the tank can hold. Indeed all tank manufacturers use this standard to represent each of their size options. The ‘useable’ capacity or ‘net’ capacity will vary according to what each individual requirement are. For example, fire reserves, sludge zones, scour drains, gravity issues etc will affect where outlets are placed.
Pioneer offers an oversized, ‘bell mouth’ internal fixture which allows for water volumes to reach very close to the top of the walls.
If you are assuming the overflow that penetrates the wall is at the top fill level, that is not the case – the diagram on this page shows how this works. The top of the water level is only about 120mm below the top of the wall which allows for the roof trusses to just sit clear of the water.
As everyone’s water harvesting and rainwater storage needs are different, depending on their annual rainfall, water usage, and roof size, as are standard water tank sizes. Pioneer Water Tanks offer sizes from 12,000 litres to 500,000 litres with 110,000 litres being the most common for rural homes. If you are unsure call us on 1800 999 599, and our sales team will be able to assist.
All Pioneer Water Tanks come with our standard accessories, including but not limited to; our industry leading AQUALINER FRESH® tank liner, our 150mm diameter tank overflow and a galvanised ladder. In addition, a range of optional tank accessories are also available for your water tank.
