Complete rainwater solutions

Our rainwater products are designed to perform efficiently, offer value for money, blend in with your property and have little or no impact on your daily lifestyle.



Our Products & Services:

Aquarius Watermaster offers complete rainwater solutions:

We design, supply, install and maintain rainwater collection systems

Our products are time tested and made for the harsh Australian climate

We offer unique accessories that give greater flexibility

Our products are made here in Sydney.


Moving to our new home, and inheriting an older 4500L rainwater tank system at the back of the house which took up a lot of garden space – John, Hannu and team did an outstanding job guiding us on what we needed to do to replace and simplify the system. We now have an elegant slimline rainwater tank system discreetly located at the side of house and have been able to open up the garden. We would highly recommend Aquarius Watermaster
Paul Mulvenna

Had an issue with our tank (installed by previous owner). Aquarius was extremely patiently with helping me diagnose the issue over email. Once the diagnosis was completed, we scheduled for them to come over to give the tank a clean and fix it up. Thomas who attended to the job did a fantastic job and was meticulous.
Marcus L

I called this company about 3 years ago after unsatisfacory service from the installer of my tank. I was very impressed then with the service, they fixed and cleaned my tank and explained in plain language about the tank. Once again I have had a serious problem with my tank, I called Aquarius Watermaster again during the busy Xmas period. They came and advised me of the faults and said they would return with the needed parts before the New Year. They came today, were here for over 6 hours and had to fix and replace shoddy products and connections. Everything is great now under warranty and working fine. I wish I had got them to install my tank in the first place. I definitely reccommend this company they know what they are doing in regard to watertanks.
RJ Davin

Aquarius Waterrmaster have been fantastic from start to finish.
My old steel water tank had burst open in the recent rains due to rust.
Aquarius removed the old tank and replaced it with a new slimline one which was aesthetically way more pleasing on the eye. They also replaced my automatic rainwater controller.

I had a few questions regarding the operation of the tank a few months later and they came out immediately to offer assistance.

Hannu is very knowledgeable and always offers the very best advice, what makes it even better is that the price is competitive too. I will definitely use them again in the future. Thank you Hannu and Team !

Deon Croucamp


Aquarius tanks featured on Grand Design Australia TV programme

Aquarius Watermaster was chosen to supply tanks for the Port Melbourne Urban Green Home. Featured on Grand Designs this home is clad in 34 black AQ2000L slimline rainwater tanks. These tanks will be used either as storage tanks or as planter boxes.

Eventually the facades of the building will be covered with an assortment of climbing and trailing plants, fed with water from the Aquarius tanks.

Latest design proven popular

The Aquarius 2000L Ultraslim is the latest tank in our range of slimline tanks and has already gained popularity due to its appearance and 470mm depth, the narrowest 2000L tank available.


Phone Us With Your Order:

1300 79 48 50


About Us

Aquarius Watermaster began delivering rainwater systems on Sydney’s leafy North Shore in 1999 with a simple, but cleverly designed 300 litre header tank.


Aquarius Launches Ultra 2000L Tank- Continuing our tradition of innovation, Aquarius is pleased to announce the release of their newest tank, the Ultra 2000.



Frequently Asked Questions