Lots of Geelong homes experience blocked drains from tree origins getting into older clay pipelines, specifically after wet winters

http://photohistory.oregonstate.edu/works/half/the-importance-of-regular-plumbing-maintenance

Several Geelong homes experience obstructed drains from tree origins invading older clay pipes, particularly after wet winters, leading to slow down sinks, gurgling sounds, and negative odours that signal a need for prompt specialist clearing up.