Quick answer: if your toilet, sink or shower is backing up inside the house, it is almost certainly your drain — not the council’s. But it is worth confirming before you pay anyone to fix it. Call 0400 073 180 and we can help you work out which side of the line the problem is on.

It is one of the most common questions we get from Epping homeowners who are dealing with a drain problem and are not sure what to do next. The short answer is that the majority of residential drain blockages — including most of the ones that affect toilets, sinks, showers and laundries — are on the homeowner’s side of the responsibility line and are therefore yours to fix.

But the full answer is more useful than that. Understanding exactly where that responsibility line sits, what is on each side of it, and how to confirm which side your specific problem is on will save you time, money and the frustration of paying a plumber to clear a drain that the council should have fixed — or worse, spending weeks trying to get the council to fix a drain that is actually your responsibility.

This guide covers the NSW drainage responsibility framework as it applies to Epping and Hornsby Shire properties specifically, the practical steps to confirm where your blockage is, and what to do depending on what you find. For emergency blocked drain situations in Epping, see our emergency blocked drain service or our guide on blocked drains in Epping NSW.

Two Separate Drainage Systems Run Under Every Epping Property

The Sewer System — Wastewater

The first system is the sewer network, which carries wastewater from bathrooms, kitchens and laundries to Sydney Water’s treatment facilities. Every home in Epping is connected to this network. Sydney Water owns and operates the public sewer main — the large shared pipe that typically runs under the street and collects wastewater from multiple properties along the road.

Your private connection to that main runs from the public sewer main to your house. This private connection pipe runs through your yard and under your home. It is your responsibility to maintain and repair, not Sydney Water’s — with one small exception that we will explain below.

The Stormwater System — Rainwater

The second system is the stormwater network, which carries rainwater from roofs, driveways and surface areas away from properties and into creeks, waterways and eventually the ocean. The public stormwater pipes in streets and public land are the responsibility of Hornsby Shire Council. The private stormwater pipes within your property — roof gutters, downpipes, surface drains and any stormwater pipes running through your yard — are your responsibility.

The two systems are completely separate and should never be connected. If wastewater enters the stormwater system (known as a cross-connection), that is a serious issue that both Sydney Water and Council take seriously. It is illegal and the homeowner is responsible for remediation.

Key point: If your toilet, sink or shower is backing up, you are dealing with the sewer system. If your yard floods after rain or your surface drains are not taking water away, you may be dealing with stormwater. The two systems have different responsibility frameworks and different reporting channels.

Who Is Responsible for What — The Complete Epping Breakdown

This table summarises the responsibility framework for drainage in Epping under NSW law. Use it as a quick reference before calling anyone.

Drainage Zone	Responsible Party	Examples
All pipes inside your home	YOU	Kitchen drain, bathroom drain, toilet waste pipe, laundry drain, hot water overflow
Private sewer pipe — yard	YOU	Drain pipe running under your garden or driveway from house to boundary
Connection to public main	SYDNEY WATER	The section from the public main to approx. 1m inside your property boundary
Public sewer main	SYDNEY WATER	Large shared pipe under the street. Call 13 20 92 to report faults
Private stormwater pipes	YOU	Roof gutters, downpipes, surface drains, stormwater pipes in your yard
Public stormwater network	HORNSBY COUNCIL	Street drains, kerb inlets, stormwater pipes in roads and footpaths
Shared pipes in easements	SYDNEY WATER	Sewer pipes shared between multiple properties — report via Sydney Water

Source: Sydney Water wastewater network responsibility framework. For property-specific queries, contact Sydney Water on 13 20 92 or visit sydneywater.com.au.

How to Tell Which Side of the Line Your Epping Blockage Is On

Signs It Is Almost Certainly Your Drain

If any of the following describe your situation, the blockage is almost certainly within your private sewer drainage — which means it is your responsibility to fix and a licensed plumber is the right first call.

• One or more toilets in the house will not flush or are backing up when flushed.
• The kitchen sink, bathroom sink or shower is draining slowly or not at all.
• You can hear gurgling sounds from drains that are not being used — particularly from the shower when you flush the toilet.
• You can smell sewage inside the house, even intermittently.
• Water is backing up through a floor waste drain inside the property.
• Multiple fixtures in the house are affected at the same time — this typically indicates a blockage in the main drain line rather than an individual fixture pipe.
• Signs It Might Be a Council or Sydney Water Issue

  The following situations are more likely to indicate a problem with public infrastructure — though they still need to be confirmed before assuming the council will fix them.

  • Your yard is flooding after heavy rain and the street drain directly in front of your property is visibly blocked with debris or overflowing.
  • Multiple neighbours on the same street are experiencing the same drainage problem at the same time.
  • Your house drains are working normally but water is pooling in the street and not draining through the kerb inlet.
  • A camera inspection of your private drain pipes shows all pipes are clear within your property boundary — the problem is further down the line than your pipes reach.

The Fastest Way to Confirm Responsibility — A Camera Inspection

Why a Camera Inspection Is the Right First Step

The fastest, most cost-effective way to determine whether a blocked drain in Epping is your responsibility or the council’s is a CCTV drain camera inspection. Our camera gives us a live video feed from inside the pipe that shows exactly where the blockage is located, what is causing it, and — critically — whether it is within your property boundary or beyond it.

This matters practically because if you call Sydney Water to report a sewer main blockage and it turns out to be in your private pipe, they will attend, determine it is not their responsibility, and leave — having charged you nothing but also fixed nothing. You then need to call a private plumber anyway. The camera inspection done first avoids that wasted time.

What Happens If the Camera Shows It Is on Your Side

If the camera confirms the blockage is within your property boundary, we give you a fixed price to clear it before we start work. For most standard drain blockages in Epping — grease buildup, root intrusion, debris — jet blasting clears the pipe in a single visit. The camera goes back in after clearing to confirm the pipe is clear and to check whether there are any structural issues — cracked sections or root entry points — that would cause the same problem to recur. If there are, we tell you and give you a fixed price for pipe relining as the permanent fix.

What Happens If the Camera Shows It Is on the Public Side

If the camera shows that all private pipes within your property boundary are clear and the problem appears to be in the public sewer main, we document the camera findings — location, footage, description of what was found — and provide you with that documentation. You then report the issue to Sydney Water on 13 20 92 for sewer problems, or to Hornsby Shire Council for stormwater issues, and you use the camera documentation to support your report. Sydney Water has a 24-hour fault reporting service and a legal obligation to respond.

Quick tip: Keep a copy of the camera inspection report and footage. If you need to report a public drainage issue, documented evidence from a camera inspection significantly speeds up the response from Sydney Water or Council compared to a verbal description of the problem.

The Grey Areas — Shared Pipes and Easements in Epping

What Is a Drainage Easement?

A drainage easement is a legal right for a pipe to run through a property that belongs to someone else. In Epping and the surrounding Hornsby Shire, drainage easements are not uncommon in older suburbs where the sewer network was built before property boundaries were finalised or where the most practical pipe route runs through multiple private lots. If your property has a drainage easement — and many Epping properties do without the owners being fully aware — there may be a shared sewer pipe running through your yard that is Sydney Water’s responsibility to maintain, not yours.

Your property title documents and the deposited plan held by Land Registry Services NSW will show any easements on your land. If you are uncertain, contact Sydney Water or your solicitor — easements are a legal interest in land and are disclosed on title searches.

What Happens If Two Neighbours Share a Private Drain?

In older Epping properties particularly, it is sometimes the case that a drain pipe runs from one property through or under an adjacent property before connecting to the public main. In these configurations, maintenance responsibility can become genuinely complicated — it depends on the specific easement conditions, whether the pipe is registered with Sydney Water as a shared private pipe, and what agreements if any exist between the property owners.

If you believe you have a shared drain situation and you are uncertain about your responsibilities, a camera inspection documents the pipe layout clearly and gives you accurate information to take to Sydney Water or a solicitor for guidance. We regularly identify shared pipe configurations during camera inspections in older Epping streets and can explain what we find clearly.

Preventing Drain Blockages in Epping — Regardless of Responsibility

Whether a drain blockage is yours to fix or the council’s, prevention is always better than the alternative. Here is what actually reduces the frequency of drain problems in Epping residential properties.

• Annual camera inspection for any Epping home over 30 years old with established trees near the sewer line. A 
• Drain screens in all shower, bath and kitchen drains. Hair and food debris blockages are almost entirely preventable with a screen that takes two minutes to clean.
• No cooking fat down the kitchen sink. Grease solidifies inside clay and older PVC pipes, progressively narrowing the bore until flow is restricted and a blockage forms.
• Only toilet paper in the toilet. Wet wipes — including those labelled flushable — do not break down in pipes the way toilet paper does. We remove them from drain pipes in Epping properties regularly.
• Address a slow-draining fixture as soon as you notice it, rather than waiting for it to block completely. A partial blockage costs far less to clear than a complete one.
• If you have established fig trees, jacarandas or other large species within 10 metres of your sewer line, the risk of root intrusion is real and ongoing. Annual camera inspection is the most cost-effective way to catch it early.

Not Sure Whether It Is Yours to Fix? We Will Tell You in Under an Hour

The honest answer to ‘is my blocked drain the council’s responsibility?’ is that it depends on where the blockage is — and the only reliable way to know is a camera inspection. If it is your drain, we clear it on the same visit and give you a documented record of what we found. If it turns out to be a public infrastructure issue, we give you the documentation you need to report it effectively.

Rectify Plumbing covers Epping, Carlingford, Eastwood, Meadowbank, North Ryde and surrounding suburbs for all drain camera inspections, blocked drain clearing and pipe relining. Our licence number is 488202C — verify it at NSW Fair Trading before you call. We provide a fixed price before any work starts and we never charge you to clear a drain that turns out to be on the public side.

Browse our complete blocked drain and pipe relining services or call Jake directly on 0400 073 180. You can also read our full Epping guides: finding a reliable emergency plumber in Epping, emergency plumber costs in Epping, and what causes blocked drains in Epping NSW.

Still not sure which side the blockage is on? Call 0400 073 180. We will put the camera in, show you exactly what is happening, and give you a straight answer before we charge you anything for clearing work.Sydney Water drain responsibility NSW

Request a Quote or Make an Enquiry  →  rectifyplumbing.com.au

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