Direct answer
A kitchen sink often blocks from fats, food residue and detergent build-up. Remove visible debris and clean an accessible strainer, but stop before dismantling fixed pipework or adding strong chemicals.
What can cause the problem or change the decision
| Possible factor | What to record safely |
|---|---|
| Fat and grease deposits | Stop using the sink and dishwasher |
| Food trapped at the strainer | Clear the removable basket or strainer |
| Build-up in the trap or branch | Try a gentle plunger if no chemicals are present |
| A shared line blockage | Check whether another fixture drains slowly |
Safe checks before professional work
- Stop using the sink and dishwasher
- Clear the removable basket or strainer
- Try a gentle plunger if no chemicals are present
- Check whether another fixture drains slowly
Stop and get help
Water returning from another fixture or a recurring blockage suggests a deeper drain issue.
What information helps the next step
Timing
Note whether the symptom is constant, linked to rain, linked to a fixture or only at peak use.
Extent
List each affected outlet, room or inspection point without opening regulated components.
History
Keep previous invoices, camera footage, product model and renovation details.
Safety
State any gas smell, hot discharge, sewage, electrical proximity or structural movement immediately.
Frequently asked questions
Is this a complete DIY repair procedure?
No. It provides safe consumer observations and stops before regulated, hazardous or specialist work.
Which professional service matches this issue?
Start with Drain Cleaning: What the Service Covers. The actual diagnosis may identify a different work category.
How can I plan the cost?
Use Blocked Drain Cost in Australia for sourced planning context, then compare written local quotes.