Short answer: if the blockage is on your property side of the boundary, it is your responsibility (or your landlord’s, if you are renting). If it is past the boundary, it is the water authority’s (Tweed Shire Council for most of the Northern Rivers). The hard part is working out where the blockage actually sits – and that is where a CCTV camera settles it in 20 minutes.

I am Matty from Drain Masters Plumbing. I am licensed in both NSW (383340C) and QLD (15036450), and we deal with the “who pays for this” question on nearly every blocked sewer job across Tweed Heads, Kingscliff, Banora Point, Chinderah and the broader Northern Rivers. Here is how it actually works in NSW.

The boundary line is everything

In NSW, your sewer system is split in two by the boundary of your property:

• Your side (private sewer or house drain) – from the fixture inside the house out to the inspection shaft or boundary trap at the property boundary. You own it, you maintain it, you pay to fix it.
• Council / Sydney Water / Rous County Council side (sewer main) – from your boundary out to the sewer main in the street. The water authority owns it and is responsible for repairs.

For most Tweed Shire properties, Tweed Shire Council is the sewer authority. Call them on (02) 6670 2400 if the blockage is confirmed on their side and they will dispatch a crew (usually free to the homeowner).

Owner vs tenant – who pays if you rent?

Under the NSW Residential Tenancies Act 2010, the landlord is responsible for the maintenance and repair of the premises. A blocked sewer caused by normal use – tree roots, old pipe failure, fat build-up from years of occupancy – is a repair cost the landlord wears.

The tenant becomes responsible when the blockage is caused by misuse – things flushed that should not have been (wipes, nappies, sanitary products, food scraps). In practice, if a camera inspection shows tree roots or a cracked pipe, that is landlord. If it shows a toy or a wad of wipes, that is tenant.

We put this on paper every time with the CCTV footage, so there is no argument later. See our Northern Rivers rental disconnector gully job for a clean example of how the cause was documented.

Strata and body corporate properties

In a strata-titled unit or townhouse, responsibility usually splits like this:

• Inside your lot (fixture to the common wall) – you (or your landlord) pay
• Common property pipes – the owners corporation / body corp pays via strata funds
• Past the strata boundary – the water authority

Our unit complex blocked drain job is a reference for the kind of camera report you want when the strata manager asks “who pays?”

Council-side blockages – what to do first

If the blockage is on the council side, Tweed Shire (or your water authority) is responsible for repairs. But you still need to prove it is on their side before they will act. That is where we come in:

1. We put the camera down the line and locate the exact blockage with a radio-frequency locator
2. We mark the position on the property with spray paint and record the distance from the inspection shaft
3. You get a short written report + the camera footage
4. You send that to the council – they will usually act within 24-48 hours for a confirmed main-side issue

See our Northern Rivers sewer council tree root boundary fault for a job where the camera footage proved the fault was on the council connection, and the council replaced the section at no cost to the homeowner.

Another QLD-side reference (same principle): Chapel Hill sewer council tree roots – Form 4 QBCC lodged.

Stormwater is a different beast

Stormwater drains follow different rules. Under NSW planning rules, you are responsible for conveying stormwater from your property to the legal point of discharge (usually a kerb outlet, inter-allotment drainage easement, or the stormwater main). The council handles the public drain downstream.

If your stormwater is backing up into your yard during heavy rain, the problem is almost always on your side of the kerb. Our Bundall stormwater tree roots council kerb connection job is a good example of where the fault sat right on the council connection and had to be documented before they would act.

What to do right now if your sewer is blocked

1. Stop using water – no toilets, no showers, no washing – until you know where the blockage is
2. Lift your boundary trap or inspection shaft if it is accessible – if it is full of sewage, the blockage is downstream (your side or council side). If it is empty, the blockage is upstream (your side)
3. Call us on 0447 188 394 – we will get the camera down and tell you exactly where it sits and whose problem it is
4. Keep the camera report – whether it goes to the landlord, strata, or council, the footage ends the argument

FAQ

Who is responsible for a blocked sewer in NSW?

The property owner (or landlord) is responsible for the sewer from the fixture out to the boundary. The water authority (Tweed Shire, Sydney Water, Rous County Council etc.) is responsible from the boundary out to the main. A CCTV camera inspection locates the blockage so you know which side it is on.

Is a blocked drain the landlord’s responsibility in NSW?

Yes, if the cause is normal wear – tree roots, old pipe collapse, fat build-up from years of occupancy. The tenant becomes responsible when the cause is misuse (wipes, foreign objects, grease poured deliberately down a drain). The CCTV footage settles it.

Who do I call if the blockage is on the council side in Tweed Shire?

Tweed Shire Council on (02) 6670 2400. Have the camera report and locator mark ready – they move faster when you can prove the blockage is past the boundary.

Who is responsible for stormwater drains in NSW?

You are responsible for conveying stormwater from your property to the legal point of discharge (kerb outlet, easement, or main). The council handles the public stormwater drain downstream. Any blockage on your side of the kerb is your problem.

Does home insurance cover blocked drains in NSW?

Usually not. Standard home insurance covers sudden events (burst pipe causing water damage) but excludes gradual damage, root ingress and drain maintenance. If you have a specific “accidental damage” extension, there may be scope. Check your PDS.

Call Matty on 0447 188 394 for a camera inspection that tells you exactly where your blockage is and whose responsibility it is to fix. Same-day across Tweed Heads, Kingscliff, Banora Point, Chinderah, Pottsville, Cabarita and the Northern Rivers.