Drain Blocked Right Now? Do These Things First
If you’re reading this because your drain is blocked or sewage is backing up, here’s the immediate priority list:
1. Stop using water in the house — every flush, every sink, every shower sends more water into an already-blocked system. If the main sewer line is blocked, water cannot drain and will back up through the lowest point (usually a floor waste or shower drain). Using more water makes this worse.
2. If sewage is backing up inside the house — close your bathroom/laundry floor waste — some floor wastes have removable grates. Placing something over them temporarily limits the sewage exposure area. Do not flush toilets.
3. If you smell sewer gas (sulphurous/rotten egg smell) — ventilate immediately — open windows and doors. Sewer gas (hydrogen sulphide) is toxic in high concentrations. Ventilate the area and leave if the smell is strong.
4. Call a drain specialist — you need water jetting to clear the blockage. This is not a DIY job for a main sewer blockage or sewage backup situation. Contact us →
Understanding What’s Happening
A blocked drain on a Central Coast property is almost always one of these situations:
Scenario A: Main Sewer Line Blocked
Signs: Multiple fixtures draining slowly or not draining at all simultaneously. Toilet won’t flush. Shower and basin draining slowly. Gurgling from drains when you flush the toilet. Sewage smell from floor waste.
Cause: The main sewer lateral (from your house to the boundary) is partially or fully blocked. Everything in the house drains to this one pipe — when it’s blocked, nothing works.
What happens next: Water jetting to clear the blockage, then CCTV inspection to find the structural cause.
Scenario B: Single Fixture Blocked
Signs: One fixture (kitchen sink, one bathroom, basin) draining slowly or not draining. Other fixtures are fine.
Cause: The branch line for that fixture is blocked — most commonly grease in the kitchen drain, hair/soap in shower and basin drains.
What happens next: Water jetting of the specific branch line. May not require CCTV if it’s an obvious grease/hair blockage.
Scenario C: Sewage Backup in Yard
Signs: Wet area in the garden that smells. Possibly sewage surfacing through the ground. No internal symptoms yet (or main line blocked too).
Cause: The sewer line is blocked and sewage is escaping into the soil via a cracked or open joint. The soil acts as a dispersal medium before internal fixtures are affected.
What happens next: Treat as urgent — sewage in soil is a contamination issue. Call same-day.
What Not to Do During a Drain Emergency
Don’t use commercial drain cleaners (caustic soda, chemical cleaners) — these are moderately effective on grease and minor organic blockages in branch drains, but almost useless on root intrusion or structural main-line blockages. They also create a chemical hazard for the technician who then jets the pipe.
Don’t try to jet the pipe yourself with a hire machine — high-pressure water jetting at 3,000+ PSI in a pipe with structural damage (cracked sections, displaced joints) can worsen structural failures or cause the pipe to collapse. This is a job for someone who CCTV-inspects the pipe before or during jetting.
Don’t use a drain snake (eel) in older terracotta pipes without professional assessment — a metal snake forced through a fragile terracotta pipe can crack it further. CCTV inspection first is the right sequence.
Don’t ignore it and wait — a partially blocked drain becomes a fully blocked drain. A gurgling toilet today is a sewage backup next week. The cost and disruption of dealing with a full sewage backup is significantly higher than addressing a developing blockage earlier.
The Typical Emergency Blocked Drain Sequence
Here’s what our emergency blocked drain response looks like:
1. Arrival and assessment — we assess the situation, locate the most likely access point (boundary cleanout, floor waste), and confirm the nature of the blockage from any available information.
2. High-pressure water jetting — we clear the blockage. For root intrusion, we use a rotating root-cutting nozzle. For grease, a chain-flail nozzle. For a total blockage with unknown cause, we start with a penetrating forward nozzle and progress from there.
3. Confirm drainage restored — we flush the system from inside the house to confirm the blockage is cleared and all fixtures are draining normally.
4. CCTV inspection — after jetting and with the pipe clear and clean, we run the camera. This is when we can see the structural condition of the pipe wall, the joints, and any residual damage from the blockage event. We record everything.
5. Report and recommendation — we show you (or tell you, if you’re not on-site) what the camera found. If there’s root intrusion at an open joint, we explain the reline recommendation. If the pipe is structurally sound and this was a one-off grease blockage, we tell you that.
6. Same-day relining or scheduled relining — if the CCTV shows structural damage and you want to proceed with relining, we can often do it the same day if we’re set up on-site and have the appropriate liner on the vehicle. Otherwise, we schedule the relining visit for the earliest convenient date.
Emergency Call-Out Costs
| Service | Cost |
|---|---|
| Same-day water jetting (residential, one access point) | $350–$500 |
| After-hours (evening/weekend) premium | +$150–$300 |
| Jetting + CCTV inspection | $500–$800 |
| Same-day jetting + CCTV + relining | Inspection cost credited; relining from $6,000 |
After the Emergency: Don’t Skip the CCTV
The single most common pattern we see on the Central Coast: a drain blocks, a plumber is called, the plumber jets it clear, job done. No CCTV. Six to twelve months later, it blocks again.
The jetting cleared the symptom. The cause — root intrusion at an open joint, or structural failure — was not diagnosed. The next blockage was entirely predictable.
CCTV inspection after a cleared blockage costs $250–$400 for a standard residential property. It answers the question: “Why did this drain block, and what’s going to happen next?” That information is worth the cost regardless of what the answer is. If the answer is “your pipe is structurally sound, this was a one-off grease blockage” — you have peace of mind. If the answer is “there’s root intrusion at an open joint that will re-block in 12 months” — you can plan the reline on your schedule rather than the next emergency’s schedule.
Emergency Blocked Drain FAQs
Q: Can I flush the toilet during a blocked drain situation? If your main sewer line is blocked (multiple fixtures affected), do not flush the toilet. Every flush adds more water and waste to an already-blocked system, increasing the risk of sewage backup through floor wastes into the house. If only one fixture is affected (single branch blockage), other fixtures can usually continue to be used — but confirm with the technician.
Q: How long will it take for someone to arrive? For genuine emergencies (sewage backup), we aim to be on-site within a few hours the same day. We’ll give you an ETA when you call. For non-emergency blocked drains (slow-draining but not backed up), we typically attend next day or within 48 hours.
Q: Will the blocked drain fix itself if I leave it? No. A main sewer line blockage will not clear itself. Root masses do not dislodge spontaneously. The blockage will typically get worse as more material accumulates upstream of the obstruction.
Q: What if I’m in a rental property and the drain blocks? Notify your property manager or landlord immediately in writing. They have a responsibility to address habitability issues including blocked sewer drains urgently. For after-hours genuine emergencies (sewage backup), most tenancy agreements allow tenants to arrange emergency repairs and claim reimbursement — check your lease or contact the NSW Tenancy Authority for guidance.
Q: Is a blocked drain covered by home insurance? The clearing of a blocked drain (jetting) is generally not covered by home insurance — it is a maintenance issue. Resulting damage from sewage backup (damaged flooring, walls) may be covered by the “escape of liquid” section of some policies. Full insurance guide →