Blocked drains in Byron Bay NSW

A blocked drain in Byron Bay usually shows up as a slow shower or sink, a gurgle from the toilet, a sewage smell, or water lifting out of the overflow relief gully in the yard. A licensed plumber finds where the line is choked, clears it with a drain machine or a high-pressure jetter, and runs a camera down the pipe when the cause is not obvious. Published Byron Bay estimates put a standard clear at $160 to $525 and a camera inspection with jetting at $370 to $1,150.

This site only forwards the details: a drainage business based locally, independent of the site, looks at the line, sets its own price and does the clearing under its own licence. The about page explains how the referral works.

What are the signs of a blocked drain?

• Water leaves the shower, bath or kitchen sink slowly, and it gets worse over a few weeks.
• The toilet gurgles, or the water in the pan rises and drops when another fixture empties.
• A sewage or rotten egg smell hangs around floor wastes, the laundry tub or part of the yard.
• Waste water bubbles out of the overflow relief gully, the grated riser outside near the kitchen, laundry or bathroom.
• Several fixtures play up at the same time, which points to the main line rather than a single trap.

One slow fixture on its own is usually a local blockage in that trap or branch: hair in a shower waste, or food scraps and fat in the kitchen sink. When every fixture on the low side of the house backs up together, the choke is further down the main drain, and that is the point where a plumber with proper equipment earns the fee.

What blocks drains around Byron Bay?

The causes here are the ones plumbers deal with up and down the Northern Rivers coast:

• Tree roots. Older homes often still have clay or earthenware sewer pipe with joints that fine roots can work into. Large garden trees planted near the line follow the moisture.
• Wipes and sanitary products. Wet wipes, paper towel and sanitary items do not break up the way toilet paper does. Holiday lets with a new group of guests each week tend to see more of them.
• Fat and food scraps. Cooking oil and fat poured down the sink cool and set on the pipe wall, then catch everything that follows.
• Sand and silt. Sand rinsed off feet, boards and wetsuits collects in shower and laundry wastes, and silt can get into a line through a cracked pipe or a damaged junction.
• A broken or sagging pipe. Ground movement can leave a dip or an offset joint that holds waste and keeps catching it.

How does a plumber clear a blocked drain?

1. Find an access point. The plumber locates an inspection opening, the overflow relief gully or a fixture to work from. If the opening is buried under a garden bed or paving, finding it adds time at the hourly rate of $84 to $210 per hour.
2. Clear with a drain machine. An electric eel is a motor-driven steel cable with a cutting head. It bores through roots and packed waste and is the method most cost guides call a standard clear.
3. Jet the line. A high-pressure water jetter scours the full bore of the pipe and flushes roots, fat and sand through to the sewer. It cleans the pipe walls more completely than a cable.
4. Run a camera. A CCTV camera on a push rod shows the inside of the line, including root entry points, cracks, collapsed sections and offset joints. Many providers record the run so you keep the footage.
5. Test the flow. Running water through several fixtures confirms the line drains freely before the plumber packs up.

Which clearing option suits your drain?

Option	Suits	What you find out	Published Byron Bay band
Standard clear with an electric eel	A first blockage, roots or wipes in an otherwise sound line	Whether it clears, with little detail on pipe condition	$160 to $525
CCTV camera inspection with high-pressure jetting	Repeat blockages, heavy root growth, a line you know little about	Where the fault is, how deep, and what condition the pipe is in	$370 to $1,150
Extra labour	Locating buried openings, raising a gully, small repairs found on the day	Depends on the job	$84 to $210 per hour

These bands come from a published Byron Bay plumber cost guide checked in October 2026. They are estimates that include GST and are not quotes. The Byron Bay plumbing cost guide sets every band on this site side by side. If you already know roots are the problem, say so when you ask for a drain clear, because the provider may bring the jetter and camera on the first visit.

When do relining or digging up come into it?

If the camera shows a cracked, collapsed or badly root-damaged section, clearing it again only buys time. Two repair routes come up. Relining feeds a resin-soaked liner into the old pipe and cures it in place, which avoids digging under driveways, decks and gardens but needs a pipe still in good enough shape to take the liner. Excavating means digging down to the fault, cutting out the damaged length and laying new pipe, which suits a collapsed line or one with a dip that holds waste.

Neither route has a published Byron Bay band, so ask for a written quote after the camera run, with the footage and a marked-up location of each fault. Sewer drainage is licensed work in NSW whatever it costs, and the licence check steps take a few minutes. For new or replaced drainage, Byron Shire Council is the local plumbing regulator: the plumber lodges a Notice of Work with Council and the drain is inspected before the trench is backfilled.

What is the overflow relief gully and why does it matter?

The overflow relief gully is the grated riser in the yard that lets sewage escape outside if the drain blocks further down, so it comes out in the garden instead of through the shower or a floor waste inside. Building Commission NSW advisory note 1/2026 sets two heights for it under AS/NZS 3500.2 that are measured from the riser’s overflow level. It needs a gap of 150 mm or more down from the lowest connected fixture, and it must finish 75 mm or more clear of the surrounding finished ground.

The same note warns that later landscaping and paths can change the heights that apply. A gully that has disappeared under a garden bed, been boxed in by decking, or ended up level with the lawn after new turf is worth mentioning in the enquiry. Byron Shire Council describes the Shire as a high rainfall area, and a gully sitting too low takes in surface water during a downpour, which loads the sewer at the worst moment. Raising or uncovering it can often be done while the drain is being cleared.

Is the blockage yours or Council’s?

Byron Shire Council’s Blocked Sewers page splits responsibility at the inspection shaft near the boundary. The owner looks after the line from the house to the shaft, gully included, and Council looks after it from the bottom of the shaft to the main. If the plumber finds the shaft holding water, the choke is on Council’s side and has to be logged with Council. What Council will and will not pay for is set out on who pays for a blocked sewer in Byron Shire.

What if the property is on a septic system or the yard drain is stormwater?

Many hinterland and rural properties in the Shire run on a septic tank or an aerated treatment system instead of town sewer. A choke between the house and the tank, a tank that needs pumping and a failing absorption area can all look like a blocked drain from inside the house, but each needs a different response. Tell the provider before the visit, and read the septic and on-site sewage page for how those systems are looked after.

Yard drains that back up only in heavy rain may be on the stormwater side. The cost guide above suggests checking the stormwater line as well as the sewer when outdoor drains overflow in a storm, and the stormwater and drainage page covers roof water and pits. Low-lying coastal towns such as Brunswick Heads see both kinds of problem after wet weather.

What does a careful plumber check before clearing?

• Whether the property drains to town sewer, a septic system or the stormwater line.
• Where the overflow relief gully and boundary inspection shaft are, so a Council blockage is not cleared on your bill.
• Whether the shaft is holding water before any work starts on your side.
• What the camera shows, with the footage handed over before a relining or excavation price is given.
• That every fixture drains freely at the end, followed by a Certificate of Compliance for the plumbing and drainage work done.

Next step

Send a blocked drain enquiry with photos of the overflow relief gully and any inspection opening you can find, a list of which fixtures are slow or backing up and since when, and a note saying if the property drains to Council sewer or to its own septic tank. Attach any camera report or footage from an earlier clear, add your suburb, and note whether guests are booked in, so the provider can plan access around them.

Send a job enquiry