Blocked Toilets
A blocked toilet is sometimes just the toilet, and sometimes the first sign your main drain has a problem. We check both, so the same blockage doesn't come back next week.
Why does my toilet keep blocking?
Sometimes it's the toilet itself: too much paper, a foreign object, or a worn trapway. But the toilet is usually the lowest fixture in the house, so if there's a blockage further down the main drain, the toilet is often the first place it shows up. If plunging clears it but it blocks again within days, the real problem is likely downstream, not in the bowl.
Diagnosis First
Clearing the toilet, and checking what's behind it
A blocked toilet is one of the most common calls we get across the Northern Beaches and North Shore, and it's also one of the easiest to misdiagnose from the surface. Because the toilet sits at the lowest point in most homes' plumbing, it's often the first fixture to show trouble when the real blockage is further down the main line.
We clear the immediate blockage first, then check whether it’s isolated to the toilet or part of a wider drain problem, so you’re not calling us back for the same issue next month.
Know The Signs
Signs it's more than just the toilet
- Other fixtures gurgle or drain slowly when the toilet is flushed
- Water rises in the bath or shower when the toilet is used
- The blockage clears with a plunger but returns within days
- More than one toilet in the house is affected
If you’re seeing any of these, the fix isn’t a bigger plunger, it’s a CCTV drain camera inspection to find out what’s actually happening in the line.
What We Do
Clear it, check it, fix the cause
Clear it
Most single-toilet blockages clear quickly with the right equipment, without needing to remove the toilet.
Check the line
If there's any sign the blockage isn't isolated, we camera the drain to see whether roots, a break or a backfall is the real cause.
Fix the cause, not just the symptom
If the drain itself is the problem, we'll show you the footage and talk through the options, from targeted water jetting to permanent no-dig pipe relining.
See how water jetting and permanent no-dig pipe relining fix the cause behind a recurring blockage, not just the symptom.
24/7 When You Need It
A blocked toilet doesn't wait for business hours
Our emergency service covers the Northern Beaches, North Shore, Inner West and Eastern Suburbs, day or night.
For everything else that can go wrong with a toilet, see leaking toilets and toilet replacement.
Last reviewed: 23 July 2026 by the Ready Plumbing team.
FAQ
Blocked Toilets: your questions answered
Plumbing problems can be extremely frustrating. Our licensed Sydney plumbers are here to provide fast, reliable answers and solutions.
Should I try to clear a blocked toilet myself?
A plunger is fine for a simple, isolated blockage. Repeated coat-hanger or chemical attempts can scratch the bowl, damage the trapway or push the blockage further down where it's harder to reach. If a plunger doesn't clear it in a couple of tries, it's worth calling a plumber before you make it worse.
How do you know if it's the toilet or the drain?
If other fixtures are affected too (gurgling sinks, a slow shower drain, water rising in the bathtub when the toilet flushes), the blockage is in the shared drain line, not the toilet. A single toilet blocking repeatedly with everything else draining fine usually points to the toilet or the pipe run straight after it. We use a CCTV camera to confirm before recommending any fix.
What causes toilets to block?
Excess paper, wet wipes (even ones labelled flushable), nappies, sanitary products, kids' toys, and tree roots or breaks in the pipe downstream. Older toilets with a narrower trapway also block more easily than modern low-flow designs.
Is a blocked toilet an emergency?
If it's your only toilet, or the bowl is close to overflowing, yes. We run a 24/7 emergency service across the Northern Beaches and North Shore for exactly this.
Can a blocked toilet mean a bigger problem?
It can. A toilet that gurgles or backs up alongside other blocked fixtures is often the first visible sign of a blocked main drain, sometimes from tree roots or a broken pipe. See our [blocked drains](/services/blocked-drains/) page for the wider signs to watch for.
Get In Touch
Contact Your Local Plumber in Sydney
Ready Plumbing is a Sydney-based and fully-licensed plumbing business with more than 20 years of experience, offering a range of residential and commercial plumbing solutions and emergency plumbing 24/7. Get in touch and we'll respond promptly.
Free Quick Quote
What kind of work do you need?