A blocked sewer is every homeowner’s worst nightmare. Unpleasant smells, slow drainage, gurgling pipes, and even wastewater backing up into your home – these are all telltale signs that something is wrong below the surface. And while some minor plumbing issues can be a DIY fix, a blocked sewer pipe is a different story. Left unaddressed, it can cause extensive damage and pose serious health risks.
At Plumbform, we’ve helped countless Brisbane residents identify and resolve sewer blockages quickly and safely. Keep reading to learn how to fix a blocked sewer, what causes the problem in the first place, and when it’s time to call in the professionals.
Common Causes of a Blocked Sewer
Understanding what leads to a blocked sewer pipe can help you prevent the issue in the future. Here are the most frequent culprits:
- Tree Root Infiltration: Tree roots naturally seek out moisture, and your underground sewer pipes are prime targets for this. Once roots infiltrate a small crack or joint, they expand rapidly, blocking the flow of wastewater.
- Grease and Fat Build-Up: Pouring grease down the kitchen sink might seem harmless, but over time it can harden and restrict your pipes, leading to a serious blockage.
- Foreign Objects: Wet wipes, sanitary products, paper towels, and other items that shouldn’t be flushed can easily cause a blocked sewer when they collect and tangle within your pipes.
- Collapsed or Damaged Pipes: Ageing infrastructure, shifting soil, or construction work can cause sewer pipes to crack or collapse, resulting in immediate and often severe blockages.
Here are Some Early Warning Signs to Watch For
Catching a blocked sewer early can help you avoid costly damage. If you notice any of the following symptoms, it’s time to act fast:
- Gurgling sounds from drains and toilets
- Water backing up into sinks or showers
- Persistent unpleasant odours
- Multiple drains clogging at once
- Slow drainage despite regular cleaning
Here’s How to Fix a Blocked Sewer Pipe Step-by-Step
- Step 1 – Identify the Problem Area: The first step in fixing a blocked sewer is confirming that the blockage is indeed in the sewer line (not just a localised drain). If multiple fixtures in your home are affected, that’s a strong sign of a sewer blockage.
- Step 2 – Try a Plunger or Drain Snake: If you’re dealing with a partial blockage and you’re confident the issue isn’t too deep, you can attempt to use a plunger or a handheld drain snake. These tools may provide a short-term fix, but they won’t address the underlying cause if the blockage is significant.
- Step 3 – Use a High-Pressure Water Jetter: A more effective and long-lasting method involves high-pressure water jetting. This equipment blasts away debris, grease, and roots with precision – without damaging your pipes. While it’s not typically a DIY tool due to the technical skills required, it’s one of the most reliable solutions used by professional plumbers.
- Step 4 – Conduct a CCTV Drain Inspection: If the blockage keeps recurring or if you suspect structural damage, a CCTV drain camera inspection is vital. This technology allows plumbers to pinpoint exactly what’s going on inside your pipes and determine the best course of action.
- Step 5 – Repair or Replace Damaged Pipes: In cases where the pipe has collapsed or been severely damaged by tree roots, repair or replacement may be required. This may involve trenchless pipe relining – a minimally invasive solution that restores structural integrity – or full excavation if the damage is extensive.
When to Call in the Experts
Knowing how to fix a blocked sewer is useful, but attempting to tackle serious blockages on your own can often do more harm than good. If the issue is persistent, worsening, or involves multiple drains, it’s time to call in the professionals. At Plumbform, we specialise in diagnosing and resolving blocked sewer pipes using the latest tools and techniques (not to mention hot water maintenance, roofing/guttering services, gas plumbing and 24/7 emergency callouts). Whether it’s a small blockage or a major structural issue, our licensed Brisbane plumbers offer fast, reliable, and long-term solutions tailored to your property’s needs.
With years of experience and a reputation built on quality workmanship, Plumbform is a trusted name in sewer and drainage plumbing across Brisbane. We combine industry-leading equipment (including high-pressure water jetters and CCTV inspections) with honest advice and friendly service.
Preventing Future Sewer Blockages in the First Place
While some sewer problems are unavoidable, there are a few things you can do to minimise your risk:
- Avoid flushing anything other than toilet paper
- Dispose of fats and oils in the bin, not the sink
- Install drain strainers to catch hair and debris
- Schedule routine plumbing inspections, especially if you have large trees near your sewer line
Need help with a blocked sewer pipe?
Don’t let a blocked sewer disrupt your home or business. Whether you’re dealing with recurring clogs or sudden backups, Plumbform’s experienced team is ready to help. Contact Plumbform today for fast and effective sewer solutions backed by expert knowledge and professional care.
