This is a simple self-assessment. It does not diagnose your drain, and it cannot replace an inspection. It turns what you can see into a plain-language suggestion about how serious a blockage might be, so you know whether to try a safe fix, limit water use or stop and get help.
Tick what applies
What the answers suggest
If scripts are switched off, the same guidance is here in full. Find the row that matches your symptoms.
| If you see | It often suggests | Sensible next step |
|---|---|---|
| One fixture slow, nothing else affected | A local blockage in the trap or short pipe | Clear visible debris, use the right plunger, flush with warm water. Never mix drain chemicals. |
| Several fixtures slow, gurgling, or a smell | A blockage in the shared line | Limit water use and ask a licensed plumber about a camera inspection. |
| The problem returns within weeks | A cause beyond the blockage, such as roots, a damaged joint or poor fall | Ask for a camera inspection and for the footage to be explained. |
| Overflow gully bubbling or full | The main drain is restricted | Stop using water that drains to it and arrange a licensed plumber promptly. |
| Dirty water coming up, or a fixture overflowing now | An urgent blockage or backflow | Stop using water, keep people and pets away and use the emergency guide. |
What to do next
For safe first steps and an explanation of camera inspection and jetting, read blocked drains in Sydney. For toilets specifically, see eight methods that actually work. If the result says urgent, go to the emergency guide, and if you need help choosing someone, read how to choose a plumber. Check any plumber's licence on the NSW Fair Trading licence check.
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