Product Quality and Guarantee

Underground Tanks Guarantee and Service


Tanks are installed underground to create more space in your yard and leave no unsightly tank in view.


Steel fibre reinforced concrete means your water tank is strong, long-lasting and watertight for long-term performance. Our tank manufacturing process is conducted under a Quality Assurance scheme to ensure that each tank complies with the quality requirements of AS1546.1.

Underground Tanks Guarantee and Service


We advise you on the best tank location and provide free site plans for easy council approval. We also assist with drainage profiles, comprehensive installation information and offer continued support throughout the process.


The concrete tank of Sydney Water Tank comes with a 30-year structural integrity guarantee for your peace of mind.



Every tank from Sydney Water Tanks has a lockable, lightweight (weighs only 9.5kgs), super strong (load tested to 1.5tonnes) access cover.


Our clever Water Mark accredited Rain Switch automatically sources rainwater from the tank whenever available, switching seamlessly to town water only when tank levels are low. When the tank refills the rainswitch will automatically switch back to tank water. You don’t need to do anything. The optional display panel indicates your current water source at any given time.



Install a concrete water tank today and you could start saving around 50% of your domestic town water use by safely and easily supplying your toilet cisterns and outdoor taps with rainwater.