A blocked sewer drain is more than just an inconvenience—it can lead to bad odours, slow drainage, and even wastewater backing up into your home or business. If left untreated, it can cause major plumbing damage.
If you’re in Sydney and wondering how to unblock a drain sewer, there are a few DIY methods you can try before calling a drain cleaning plumber. In this guide, we’ll cover the most effective ways to clear a blockage and when to call a blocked drain plumber for professional help.
1. Signs You Have a Blocked Sewer Drain
Not sure if your drain sewer is blocked? Look out for these telltale signs:
- Slow-draining sinks, showers, or toilets
- Gurgling noises coming from pipes after using water
- Unpleasant odours near drains or outside sewer areas
- Water backing up when using another fixture
- Toilet water rising too high or draining too slowly
If these issues sound familiar, it’s time to act. Knowing how to unblock a drain sewer can save you from repairs down the line.
2. What Causes a Blocked Sewer Drain?
Blocked sewer drains don’t happen overnight—there’s always an underlying cause. Here are the most common culprits:
- Tree roots invading underground pipes, a common issue in Sydney suburbs
- Grease, fat, and oil buildup from kitchen waste
- Flushed foreign objects like wipes, sanitary products, and paper towels
- Aging or collapsed pipes, particularly in older homes
- Stormwater overload during heavy rainfall, leading to debris buildup
Knowing what’s causing the blockage can help determine whether a drain cleaning plumber is needed or if a DIY fix might work.
3. How to Unblock a Sewer Drain (DIY Methods)
Before calling a drain specialist, try these simple solutions:
1. Boiling Water Method
Pour boiling water down the drain to break down grease and soap buildup. This method is effective for minor blockages.
2. Baking Soda & Vinegar Trick
Pour one cup of baking soda into the drain.
Add one cup of vinegar and let the mixture fizz for 30 minutes.
Rinse with hot water to flush out loosened debris.
3. Plunger Method
Using a flange plunger can help clear deep blockages. Place it over the drain, ensure a good seal, and use rapid plunging motions.
4. Drain Snake or Auger
For tougher blockagess, use a plumbing auger to reach deep inside the pipe and pull out debris.
5. High-Pressure Hose Flush
If you have a garden hose with a high-pressure attachment, insert it into the drain and let the water pressure break up the blockage.
If none of these methods work, it’s time to contact a licensed plumber who specialises in drain cleaning.
4. When to Call a Professional for a Blocked Sewer Drain
While DIY methods work for minor blockages, some situations require professional tools and expertise. You should contact a drain plumber if:
- Multiple drains blockage at the same time
- Sewage backs up into sinks, toilets, or showers
- Persistent bad smells linger despite cleaning
- Water pools in your yard near the sewer line
A licensed plumbing specialist can inspect the pipes using CCTV drain cameras, hydro jetting, and pipe relining to clear even the most stubborn blockages.
5. Preventing Future Blocked Sewer Drains
A bit of prevention can save you from expensive repairs. Follow these simple tips to keep your drains clear:
- Dispose of grease properly—never pour it down the sink
- Use drain strainers to catch food scraps and hair
- Only flush toilet paper—avoid wipes, sanitary items, and paper towels
- Book regular drain inspections with a local plumbing expert
Routine maintenance can help catch small issues before they turn into costly repairs.
Need a Drain Plumber? Here’s What to Do Next
Blocked sewer drains can quickly turn into a serious plumbing issue. While knowing how to unblock a drain sewer can help with minor problems, sometimes expert intervention is the best solution.
At Ready Set Reline, we provide expert drain cleaning plumber services to keep your plumbing in top condition. Whether it’s a simple block or a more complex sewer issue, our team has the tools and expertise to fix it fast. Don’t wait for the problem to get worse—contact us today for expert help!
FAQs
A plunger or boiling water can help with minor blockages. For tougher blockages, professional drain cleaning may be needed.
The cost varies depending on the severity of the blockage. A licensed plumber typically charges $150-$500 for drain unblocking.
Chemical cleaners can damage pipes over time. Instead, try baking soda and vinegar, or seek professional drain cleaning.
A drain specialist may use CCTV inspections, hydro jetting, or pipe relining to remove and prevent blockages.
