Tank Sizes and Materials Guide
How to Choose the Right Tank for Your Property
Choosing a water tank isn’t just about what fits; it’s about finding the right balance between size, material, purpose, and budget. Whether you’re buying a tank for your home, your farm, or your business, it’s normal to feel unsure about where to start. At Taztanks, we make it simple.
We’ve worked with all types of Tasmanian properties from small suburban gardens to remote livestock stations, and we understand how local conditions, rainfall patterns, space, and use all play a part in what tank will serve you best. Our goal is to help you choose a tank that will give you peace of mind for years to come, without overcomplicating the decision.
Getting the Sizing Right
Tank size depends on two things: how much water you’re likely to collect, and how much you’re going to use.
A household that only wants a tank for garden watering will need something completely different to a rural home that relies on tanks for its entire water supply. Likewise, a property in a high-rainfall area like Queenstown will collect a lot more water from a small roof than a similar house in Bicheno.
We look at things like roof area, rainfall averages, your water use habits, and whether you have access to mains, bore, or dam water. We’ll also consider practical things like the available space, whether the tank will be above or below ground, and how close it is to where you’ll use the water.
Rather than guessing, we run real calculations for you using your local weather data and daily needs so you can be confident the tank will do the job without running dry or being more than you need.
Understanding Your Material Options
One of the biggest choices you’ll face is what your tank is made from. At Taztanks, we supply both poly water tanks and steel-liner water tanks, and each has its strengths. The right choice depends on what matters most to you: space, longevity, appearance, cost, or fire resistance.
Poly tanks are made from food-grade polyethylene and are moulded in one solid piece. They’re tough, lightweight, UV-resistant, and incredibly easy to maintain. Because they’re pre-formed, they arrive ready to go and can be installed quickly, making them a great choice for smaller properties or tight-access sites. Poly tanks are also available in slimline designs, so they’re perfect for fitting down the side of your house or in a courtyard.
Steel-liner tanks, on the other hand, are ideal when you need large volumes or want something that looks more traditional. These tanks use a strong corrugated steel shell with an internal liner that holds the water safely and securely. They’re assembled on site and can be built to much larger capacities than poly tanks. Many of our rural and bushfire-prone clients prefer steel tanks, especially when a fire-reserve outlet is required. And because they come in COLORBOND® finishes, they can be colour-matched to your shed or home for a cleaner look.
Both materials are safe for drinking water, and both have long lifespans when installed correctly and maintained. If you’re still unsure, we can show you recent examples we’ve installed nearby so you can see the differences in real life.
At the end of the day, you shouldn’t have to make this decision alone or rely on a brochure to figure it out. That’s why we offer on-site consultations across Tasmania. We’ll measure up, explain your options in plain language, and recommend what will work for your setup, not what’s easiest for us to sell.
We don’t push a single brand or material, because we work with all of the best tank manufacturers, and we believe in finding the right fit for each client.
If you’ve got questions about what tank to choose, how much water you’ll need, or what size your pad should be, we’re here to help. And if you're not ready to commit, that's okay too. We’re happy to come out, have a chat, and leave you with the info you need to decide in your own time.
Thinking about installing a water tank but not sure what size or type you need? Let’s start with a conversation. Book a free site visit today, and we’ll help you figure it out.