Singapore’s humid climate and high-rise living create unique plumbing challenges. From choked toilets to rusty pipes, small issues can become costly floods. Here’s how to spot and solve them fast.
1. Choked Toilets & Floor Traps
- Cause: Flushing wipes, excess toilet paper, or hair buildup.
- DIY Fix: Use a flange plunger (not a sink plunger). For deep clogs, try a toilet auger.
- When to call a pro: If multiple fixtures gurgle – main stack blockage.
2. Leaking Faucets (Dripping Taps)
- Cause: Worn-out rubber washer or O-ring.
- DIY Fix: Replace the washer (available at any hardware shop like Horme or Selffix).
- Singapore note: PUB encourages fixing drips – a dripping tap wastes ~4,000 litres/year.
3. Low Water Pressure in HDB Flats
- Cause: Clogged aerators, sediment in pipes, or centralised pump issues.
- DIY Fix: Unscrew and clean the tap aerator with vinegar.
- Pro solution: Pressure boosting pump (HDB-approved models only).
4. Leaking Water Heater (Storage Tank)
- Cause: Corrosion or loose drain valve.
- Warning: Turn off mains immediately. If tank is >5 years old, replace it.
- Singapore brands: 707, Rheem, Ariston.
5. Choked Kitchen Sink
- Cause: Grease, oil, and food scraps.
- DIY Fix: Pour boiling water + baking soda & vinegar. Wait 10 min, then flush.
- Never pour: Cooking oil down the sink – it hardens in HDB pipes.
6. Running Toilet (Constant Filling Sound)
- Cause: Faulty float valve or flapper.
- DIY Fix: Adjust the float arm or replace the flapper seal ($5 part).
7. Corroded or Rusty Pipes
- Cause: Age (HDBs built before 1990 use galvanised steel).
- Solution: Repiping with copper or PP-R plastic pipes. Licensed plumber required.
8. Leaking Pipe Joints Under Sink
- Cause: Loose slip nut or cracked pipe.
- DIY Fix: Tighten with a pipe wrench. If cracked, replace P-trap (10–15).
9. Overflowing Washing Machine Drain
- Cause: Clogged standpipe or kinked drain hose.
- Fix: Clean pipe with a drain snake. Elevate hose to prevent backflow.
10. Noisy Pipes (Hammering Sounds)
- Cause: Water hammer – sudden stop of water flow.
- Fix: Install water hammer arrestors or secure loose pipes.
Conclusion
While DIY fixes work for minor issues, persistent leaks require a licensed Singapore plumber (BCA or PUB licensed). Save our handy checklist for your next home emergency.
