
Overflowing
Drains Sydney - Sewage, Gullies and
Floor Wastes
Sewage coming out of the gully, the yard flooding every time it rains, or the shower backing up? Our licensed plumbers jet blast the drain clear 24/7 across Sydney, with the price agreed before any work starts.

*No call-out fee during business hours, Monday to Friday 7am to 4pm. Mr Splash VIP lifetime members pay no call-out fee at any time. After-hours and weekend call-outs may attract a fee at our discretion, and we will always confirm it with you before we attend.
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- Aussie owned & operatedFamily-owned in Sydney since 2010
- Lifetime guaranteeIf our work fails, we fix it
Free quotes · No hidden costs · Licensed & insured · Lic #306457C
The Overflowing Drains We Clear
Find the one that looks like yours. Whichever it is, you get a fixed price before we start clearing.

Sewage Out Of The Gully
Sewage bubbling up and spilling over the grate of the gully outside, often when a toilet is flushed or the shower is running.

Drains Flooding The Yard
Water or sewage spreading along the side of the house, across the path or into the garden, from a blocked sewer or a stormwater drain in heavy rain.

Shower Drains Backing Up
Water rising back up through the shower drain or bathroom floor waste, usually from hair and soap scum, or a blockage further down the line.

Kitchen Drains Backing Up
Grease from the kitchen sink builds up in the drain outside until water backs up into the sink or spills out of the gully.

Laundry Floor Wastes
Dirty water coming up through the laundry floor waste when the washing machine empties, and spreading across the floor.

Drains That Keep Overflowing
Tree roots or a cracked, sagging pipe keep catching waste, so the drain overflows again soon after it was cleared and that section needs repairing.
How Bad Is The Overflowing Drain?
Sewage coming up and rainwater pooling are different problems. Here is how to tell which one you have, and what to do right now.

Sewage Coming Up
Sewage spilling out of the gully, coming up through a floor waste or rising in the toilet means the sewer line is blocked. Stop flushing and running water, keep children and pets away, and call us straight away.

Water Pooling After Rain
Rainwater pooling around a yard, courtyard or balcony drain and slowly going down is usually leaves, silt or roots in the stormwater line. It is not sewage, so book it in, but get it cleared before the next big storm.

Slow Or Gurgling Drains
A shower, basin or sink that drains slowly or gurgles has not overflowed yet, but it often comes first. Book it in and we clear it before it backs up.
How We Clear Overflowing Drains
Overflowing drains in Sydney, cleared properly: find the blockage, jet blast it clear, then camera the line and test it before we leave.
Fixed price firstFind The Blockage
We lift the gully grate and open the inspection openings to find where the drain is blocked, then give you one fixed price to clear it before any work starts.
Licensed plumbersJet Blast It Clear
A high-pressure water jet goes down the line and cuts through the grease, wipes, silt or tree roots, so the water and sewage can drain away.
Tested before we leaveCamera And Test
Once it is flowing, we put a CCTV drain camera down the line, free with any booked drain service, to show what caused it. Then we run the taps and flush the toilets to check everything drains.
Free Call-Out, Free Quote, Fixed Price
Nothing to pay until you say yes. Here is how it works.

We come out, no call-out fee*
A licensed plumber comes to you, looks at the problem and tells you exactly what is going on. No charge for the visit during business hours.*

You get a fixed-price quote, free
Before any work starts you get the full price in writing. Not an hourly rate, not an estimate that grows once we are in the walls.

You only pay when you say yes
Accept the quote and we start. The price you accepted is the price you pay, however long the job takes. What you see is what you get.
*No call-out fee during business hours, Monday to Friday 7am to 4pm. Mr Splash VIP lifetime members pay no call-out fee at any time. After-hours and weekend call-outs may attract a fee at our discretion, and we will always confirm it with you before we attend.
Video Testimonials
Stop The Overflow. Fix The Cause.
Tell us where the water or sewage is coming up and a licensed plumber will call you straight back with a time and a fixed price.
- Fixed Price QuotesOnce we have found where the drain is blocked, you get one price to clear it. That price does not move once we start, however stubborn the blockage turns out to be.
- No Call-Out Fee*Getting a licensed plumber out to an overflowing drain costs you nothing during business hours. You only pay once you have seen the price to clear it and said yes.
- Pay Later At 0%Sewage coming up never waits for payday, and a broken pipe found on camera can turn into a bigger job. Spread the fixed price over a 0% interest payment plan and get the drain flowing now.
*Terms and conditions apply.
Get a Free Overflowing Drain Quote
60 seconds · no obligation
Overflowing Drain FAQs
Answer:
It depends on where the blockage is and what is causing it: grease or wipes near the gully clear quicker than tree roots deep in the line or a broken pipe. We find the blockage first, then give you one fixed price before any work starts, and it does not change once we start. If the camera then shows a broken pipe, the repair is priced separately and you decide whether to go ahead.
Answer:
If leaves or dirt are sitting on the grate, yes: lift it with gloves on and clear them away. If water or sewage is coming up from underneath, the blockage is further down the pipe, where a plunger or a bottle of drain cleaner will not reach. That needs a jet blaster and a licensed plumber.
Answer:
Stop running water in the house: no flushing, showers, washing machine or dishwasher, because all of it ends up at the overflow. Keep children and pets away, and call a plumber straight away if it is sewage. If it is only rainwater pooling in the yard, it can wait for a booking.
Answer:
It is the round grated drain outside, usually close to the house, set a little lower than the floors inside. When the sewer pipe below it blocks, sewage has nowhere else to go, so it lifts the grate and spills outside instead of coming up through your shower or toilet. An overflowing gully is doing its job, and it means the sewer line needs clearing.
Answer:
Usually the stormwater drain is partly blocked with leaves, silt or roots, so it copes with light rain but backs up and floods the yard in a downpour. Rainwater can also get into the sewer through cracked pipes or a downpipe connected to it, which pushes a partly blocked sewer over the top at the gully. It may drain away when the rain eases, but the blockage is still there for the next storm.
Answer:
Something in the pipe is catching waste again: tree roots growing in through the joints, a cracked or sagging section, or grease built up along the walls. Jet blasting gets it flowing, and the camera afterwards shows which one it is. Then you get a fixed price to repair that section so it stops coming back.
Answer:
Yes. Raw sewage carries bacteria and viruses that can make people sick, so keep children and pets away and wear gloves and closed shoes if you have to go near it. Wash your hands well afterwards, and do not hose it into the garden or down a stormwater drain.
Answer:
Each owner is responsible for the sewer pipes from their house up to where they join Sydney Water's network, and Sydney Water is responsible for its own pipes. The camera inspection after the clear shows whose pipe the blockage is in. If sewage is overflowing from a maintenance hole in the street, call the Sydney Water faults line on 13 20 90.
Guides That Answer the Question First
Written by our licensed team from real Sydney jobs: what it usually costs, what to check yourself, and when to call. Every price is a published market range, never a sales pitch.
All our guides are on the Mr Splash blog.
Recent Overflowing Drain Jobs Across Sydney
Suburbs where we have recently cleared overflowing sewers, gullies, showers and yard drains.
Upfront fixed pricing quoted before any work starts. Terms and conditions apply.
















