GRAF Garantia Lilo 5000L Underground Tanks Perth

The GRAF Garantia Li-Lo 5000L Underground Tank is the ultimate solution for high-capacity rainwater storage in Perth’s residential and commercial environments. Engineered in Germany and designed for shallow excavation, the Li-Lo tank makes underground installation faster, safer, and more cost-effective—without sacrificing strength or reliability.

Thanks to its flat-profile design, the 5000L model requires up to 80% less digging compared to traditional cylindrical tanks. This reduces soil removal, speeds up installation, and significantly lowers labour and machinery costs. Despite its compact footprint, the tank offers outstanding durability and is groundwater-stable up to the shoulder—no concrete anchoring required.

Perfectly suited to WA conditions, the Li-Lo 5000L can also be made vehicle-loadable with the optional Telescopic Dome Shaft and Cast Iron Lid, making it ideal for driveways and trafficable areas.

FEATURES

• Low excavation depth for faster, more affordable installations
• Groundwater-stable up to the tank shoulder
• No concrete required for anchoring
• Options of Pedestrian Lid, Car Lid or either with an additional filter
• Simple Installation - very low maintenence
• Patented technology
• German Engineered underground tank system

SPECIFICATIONS