Key takeaways
- Slow drainage and gurgling are the earliest, easiest signs to catch
- Bad smells often mean waste is sitting in the pipe
- Multiple slow fixtures at once usually points to the main drain
A fully blocked drain is stressful and messy — but it almost always gives you warning first. Here are the signs worth acting on early, before you need an emergency plumber.
The signs to watch for
- Water draining slower than usual from the sink, shower or bath
- Gurgling sounds from drains or the toilet
- Unpleasant smells rising from the plughole
- Water pooling around floor wastes or in the shower
- The toilet level rising or falling oddly when you flush
- More than one fixture draining slowly at the same time
- Overflow from the outside gully during heavy use
Tip: If several fixtures are slow at once, the blockage is likely in your main sewer line — that's a job for a plumber with a drain camera, not a bottle of drain cleaner.
What not to do
Avoid tipping caustic chemical drain cleaners down the pipe repeatedly. They can damage older pipework, are dangerous if the drain backs up, and often don't clear the root cause — things like tree roots, collapsed pipe or a solid grease build-up.
The lasting fix
A CCTV drain inspection shows exactly what and where the problem is. From there, options like high-pressure water jetting or pipe relining can clear and restore the drain without digging up your yard. If you're dealing with one now, our blocked drain plumbers in Adelaide can usually be there the same day.
