Can I install a Rainwater Tank Underground?

Yes. There are myriad options for underground water storage and different capacities and materials available, depending on your water usage requirements and site location.

While excavating the ground to bury a water tank may not be initially the most cost effective option for a water tank, the benefits arise from the space saving advantages and keeping your water supply cool and free of algae and other contaminants.

From this article you can also learn about the sizes and prices available, and please contact our knowledgeable sales team if you need further information.

What options do I have to choose from?

You have two choices for your underground water tank.

• Poly (also known as plastic)
• Concrete

Below we’ll discuss the main features of each material type.

Underground Poly Tanks

Underground poly tanks are lightweight, strong and easy to transport. They come in a variety of shapes and sizes to suit your location and water capacity requirements.

Underground concrete water tanks

Underground concrete water tanks are strong and provide even more cooling properties than and underground plastic tank. Concrete is an excellent insulator and will be sure to keep your water cool even on the hottest of Australian summer days.

Concrete water tanks are heavy, weighing at least 4 tonnes or more, depending on capacity.

What are the benefits of storing water underground?

1. Temperature

   
   Storing water underground shields the tank from light and heat. Keeping your water tank cool provides an unfavourable environment for algae and other contaminants such as mosquito larvae to grow and thrive.

2. Space saving

   
   Underground water tanks can be placed under a lawn, garden bed or driveway. Keep in mind if the tank is being installed under a driveway, it will need to be purpose built to provide the strength required for vehicle use.

3. Maintenance

   
   Saving on water tank maintenance as a result of lower algae growth and sludge build up is beneficial. Whilst the tank will still require maintenance, the lower water temperature means it will take a lot longer for the tank to require cleaning.

What is the capacity of an underground tank?

Poly underground water tanks are available in the following capacities:

If you’re looking for a larger capacity tank, a concrete underground tank will be more suitable. They come in the following sizes:

Would you like to know more?

Simply contact our friendly sales team to learn more about our underground water tanks, and finding the best tank to suit your home, business or property.