Why Sydney Homes Are Prone to Blocked Drains
Sydney's older housing stock — particularly in the Eastern Suburbs and North Shore — often features ageing clay or cast iron pipes that are more susceptible to root intrusion and scale build-up. Combined with heavy leaf fall in tree-lined streets, blocked drains are a frequent call-out for any plumber in Sydney.
Top Causes of Blocked Drains
- Hair and soap scum — the leading cause of shower and bathroom drain blockages
- Grease and fat — cooking oil that solidifies inside kitchen drain pipes
- Tree root intrusion — common in older properties with large gardens
- Foreign objects — wet wipes, cotton pads, and "flushable" products that aren't truly flushable
- Leaves and garden debris — storm events block outdoor drainage in Sydney's leafy suburbs
Prevention Tips
In the Kitchen
Never pour cooking oil or grease down the sink. Instead, let it cool and dispose of it in the bin. Use a sink strainer to catch food scraps before they enter the drain. Running hot water while using the disposal helps flush debris through the pipe.
In the Bathroom
Install a hair catcher over shower and bath drains and clean it after every shower. Avoid flushing anything other than toilet paper — wet wipes, even those labelled "flushable," are a leading cause of serious blockages in Sydney's sewer infrastructure.
Outdoor Drains
Keep gutters and stormwater drains clear of leaves, especially heading into winter when Sydney's plane trees shed heavily. Check downpipes annually to ensure they're flowing freely.
When to Call a Plumber
If you notice slow-draining water, gurgling sounds from pipes, or unpleasant odours from drains, don't wait. Early intervention with CCTV drain inspection and high-pressure jet blasting can save you from a complete pipe failure. Blumberg Plumbing services all of Sydney's Eastern Suburbs, North Shore and Northern Beaches — call us at the first sign of trouble.