Lots of Geelong homes experience obstructed drains pipes from tree origins invading older clay pipes, specifically after damp winters

https://classes.iwcc.edu/eportfolios/296/home/common-plumbing-leaks-that-occur-in-homes

Several Geelong homes experience blocked drains from tree roots invading older clay pipes, particularly after wet winters months, causing slow sinks, gurgling sounds, and poor odours that signal a need for prompt expert clearing.