The first GRAF plastic underground tank was launched in 1978.


Since then, GRAF has become a market-leader in manufacturing rainwater harvesting tanks.

We now use a combination of rotomoulding and injection moulding processes, with a large emphasis on quality and testing during production, making sure every tank we produce performs precisely as intended.

To comply with Australian codes and standards, our rainwater tanks are made from virgin plastics – but that’s not to say they don’t measure up when it comes to sustainability.

Our tanks are:

  • Lightweight and spatially efficient, lowering the environmental impacts of shipping and logistics.
  • Designed so they are easy to use, strong, stable and long-lasting with a precision fit. 
  • Engineered to redirect rainwater for grey-water applications.
  • Fully recyclable at end of life.