Best Rainwater Tanks (2025 Buyers Guide)

Need to store water for your garden? Struggling to store enough rainwater for your garden in the winter months? Reusing rainwater in your garden is highly recommended as it offers a great way to be environmentally friendly with minimal effort and provides your plants with the best hydration possible. 

Rainwater tanks come in a variety of shapes and sizes, from compact options for small spaces to large systems for big gardens. Check out our buyer’s guide and water tank reviews so that you can purchase the right solution for your needs.

Rainwater Storage Tanks – Product Reviews

We want to make life easy for you and have found four great rainwater storage tanks that you can choose from. Each tank has a number of great features, leaving you to pick the one that suits your garden and your needs the best.

Rainwater Tanks Australia – Buyers Guide

Before you decide on a rainwater tank, take the time to read through our buyer’s guide to learn more about your options. We can help you choose between large and small rainwater tanks as well as commercial and domestic water tanks, giving you the right insight and purchasing power that you need.

Water Tank Size

The first thing you will need to consider is how big your need your rainwater tank to be. Start by considering the size of your garden, the space you have available and the number of plants that will need to be watered. Armed with this information, you can then pick out the best size for your needs.

Don’t forget that you will also need to think about the amount of rain (1) you get in your area as there is little point in getting a huge tank for a dry area.

Above or Below Ground Tanks

If you want a quick and easy solution for your rainwater collection then you will probably be able to get your needs met with an above-ground tank and enjoy easy access and simple maintenance.

However, you can also choose an underground tank if you don’t want your collection device on show. The only issue with underground tanks is that they can be expensive to install and maintain, so think carefully before you go for this option.

Material Choice

Another important consideration is what you want your rainwater tank to be made from. Many consumers choose plastic as it is cheap to install and easy to move around but others opt for steel as it is less likely to warp and is a more long-term solution. If you rent or like to rearrange your garden each year then we’d suggest that plastic is the best choice, but if you want a more permanent solution then steel will work well.

Water Collection

With your new tank installed, you will want to maximise the amount of water that you can collect and to do this, you will need to use a quality collection system. Think about arranging guttering to drive the rainwater into the tank, helping you to get the best results with each downpour.

If your tank is open and accessible, you may also want to install a guard to stop debris such as leaves, plants and other small items from getting into the tank.

When you are new to water collection, you will need a water catcher kit that will help you set up your new system with minimal fuss. The Maze 100L Rainwater Catcher Kit is a perfect choice as it comes with the rainwater barrel, tap, stand, a link kit and a diverter, offering everything you need to get started.

The barrel stores a massive 100 litres of collected water and it is made from Polyethylene, a material that is durable and long-lasting. It comes with a 5-year guarantee too, giving you peace of mind and confidence that it will last.

If you are new to water saving (2) and don’t want to spend too much on a tank then the Todeco 53 Gallon Folding Rain Barrel is well worth looking at. It’s made from PVC and comes with legs that are fully detachable when you are not using it. 

The tank can store up to 53 gallons of water and it comes with a net that you can use to cover the top of the unit, stopping debris from being able to get into the water. It’s a cost-effective solution that is sure to help you save money and get your garden looking great!

If you want a rainwater tank that is made in Australia then the Aqua Tank 100L Rain Water Tank is a great choice. It is made from a type of PVC that is non-toxic and UV resistant as well as being BPA-free. It comes with a tap that is simple to use and can be swapped for a hose fitting when you want to get your water direct to your beds.

It comes with a 12-month warranty and weighs in at just 1.35kg when it is empty. The Aqua Tank system works by sending rainwater from your guttering direct to the tank, leaving it ready to use. The best thing about it is that when the dry season comes to an end, you can simply clean and dry the tank and then fold it up until you are ready to use it again.

Last, but not least, is the Collapsible Rain Barrel System that can store up to 50 gallons of water for you to use in your garden. It is green and made from PVC fabric and framing, making it crack-resistant and long-lasting. It is very lightweight too and can be easily collapsed and stored when it is not needed.

It sits next to your downspout and works hard to collect the water that runs off your building, saving you time and money. The barrel comes with a zipper lid that will stop debris from getting in and there is a simple inlet hold that is covered with mesh. It’s a great and cost-effective solution for smaller gardens.

The Verdict – The Best Water Tank Reviews

Our favourite rainwater tank has to be the Maze 100L Rainwater Catcher Kit as it holds a lot of water and is simple to install. The included tap makes it easy to access the water when you want to use it and the lid stops leaves from building up inside – it’s a great option!

We also recommend the Todeco 53 Gallon Folding Rain Barrel as it is simple to store when not in use as well as being quick to install when you need it. It holds up to 53 gallons of water and offers net protection from debris, making it easier than ever to use the water you manage to collect.

If you are keen to choose the right tank the first time around then take a look at the questions and answers below – they should provide you with more specific information you can use to decide.