How Do I Know If My Main Drain Is Blocked?

Admin • January 19, 2023

A blocked drain is a plumbing issue that occurs when a pipe or drain becomes completely or partially blocked; this can result from a build-up of hair, toilet paper, soap or even tree roots growing into your pipes. The consequences of this can cause significant disruption to your home life, so it’s important to recognise potential problems quickly. This blog lists common signs of drain blockages to help you identify issues, as well as the services FlowWise offers to get your water running freely again.

Water & Sewage Backup

Strong, unpleasant odours in your drains are a common indicator of water and sewage backup in your home. This can be caused by a number of factors, including:

  • Corrosion
  • Heavy traffic above pipes
  • Damaged joints
  • Sewer lines sagging over time
  • Bends in the pipe which collect debris
  • Pouring fats, greases or oils down the drain
  • Bulky items such as paper towels, wipes & sanitary products

If the smell persists over a long period of time, it could indicate a more serious problem with the main line, so it’s important to call a professional to diagnose the problem as soon as possible.

Slow Water Drainage

Another sign of blockage is slow water drainage in toilets, tubs and sinks. Toilets are usually connected directly to the main line, so any blockage is likely to affect them first. If only one toilet is backing up, you may just have an issue with that individual fixture, but if all your toilets are having issues, as well as other sinks and drains throughout the house, there’s likely an issue somewhere along the lines leading from your sewerage system. This should be addressed quickly to identify or prevent more serious issues with your plumbing system.

Gurgling Noises From Drains

If you hear gurgling noises coming from your sink or bathtub while they’re draining, this could be caused by air escaping from the pipes due to a blockage in the main line. This type of noise usually indicates an obstruction, which will need to be cleared out before normal drainage can resume.

What Can I Do About It?

The first thing to do when you notice a potential blockage is turn off the water in your home. This will keep the situation from getting worse while you wait for expert advice and prevents automatic processes – like dishwashers or washing machines – from draining more water into your clogged pipes.

After turning off the water, call a qualified plumber to offer advice and assistance. FlowWise uses specialised equipment and camera technology to identify and treat main drain blockages without digging. First, we conduct a CCTV camera inspection which allows us to locate the issue and show you exactly what’s causing the blockage. We also utilise pipe and problem location to pinpoint issues and accurately determine the best course of action, as well as high pressure cleaning and disinfecting techniques to cut through tough debris, remove grease and leave contaminated areas germ free. On the completion of services, we provide work reports with honest recommendations and free quotes for additional work if required. These services allow us to fix issues quickly with minimal impact on your home and family.

Call us today on 07 5445 4276 for a free, no obligation quote.

blocked drain is a plumbing issue that occurs when a pipe or drain becomes completely or partially blocked; this can result from a build-up of hair, toilet paper, soap or even tree roots growing into your pipes. The consequences of this can cause significant disruption to your home life, so it’s important to recognise potential problems quickly. This blog lists common signs of drain blockages to help you identify issues, as well as the services FlowWise offers to get your water running freely again.

Water & Sewage Backup

Strong, unpleasant odours in your drains are a common indicator of water and sewage backup in your home. This can be caused by a number of factors, including:


  • Corrosion
  • Heavy traffic above pipes
  • Damaged joints
  • Sewer lines sagging over time
  • Bends in the pipe which collect debris
  • Pouring fats, greases or oils down the drain
  • Bulky items such as paper towels, wipes & sanitary products



If the smell persists over a long period of time, it could indicate a more serious problem with the main line, so it’s important to call a professional to diagnose the problem as soon as possible.

Slow Water Drainage

Another sign of blockage is slow water drainage in toilets, tubs and sinks. Toilets are usually connected directly to the main line, so any blockage is likely to affect them first. If only one toilet is backing up, you may just have an issue with that individual fixture, but if all your toilets are having issues, as well as other sinks and drains throughout the house, there’s likely an issue somewhere along the lines leading from your sewerage system. This should be addressed quickly to identify or prevent more serious issues with your plumbing system.

Gurgling Noises From Drains

If you hear gurgling noises coming from your sink or bathtub while they’re draining, this could be caused by air escaping from the pipes due to a blockage in the main line. This type of noise usually indicates an obstruction, which will need to be cleared out before normal drainage can resume.

What Can I Do About It?

The first thing to do when you notice a potential blockage is turn off the water in your home. This will keep the situation from getting worse while you wait for expert advice and prevents automatic processes – like dishwashers or washing machines – from draining more water into your clogged pipes.


After turning off the water, call a qualified plumber to offer advice and assistance. FlowWise uses specialised equipment and camera technology to identify and treat main drain blockages without digging. First, we conduct a CCTV camera inspection which allows us to locate the issue and show you exactly what’s causing the blockage. We also utilise pipe and problem location to pinpoint issues and accurately determine the best course of action, as well as high pressure cleaning and disinfecting techniques to cut through tough debris, remove grease and leave contaminated areas germ free. On the completion of services, we provide work reports with honest recommendations and free quotes for additional work if required. These services allow us to fix issues quickly with minimal impact on your home and family.


Call us today on 07 5445 4276 for a free, no obligation quote.

Two Workers in Safety Gear Operate Near a Trench in a Grassy Area
By FlowWise August 15, 2025
Explore how Pipe Relining saves time money and prevents disruption to your property with a fast durable solution. Act now
Two Workers in Yellow Shirts Install a Long Pipe
By FlowWise August 12, 2025
Discover 10 common plumbing problems in residential and commercial properties and learn how to tackle them with expert pipe relining in sunshine coast. Act now!
A Man Fixing a Drainage — FlowWise in Maroochydore, QLD
By FlowWise August 11, 2025
Learn why blocked drains sunshine coast are a health risk, can blocked drains make you ill and how to fix blocked drain quickly. Act now.
A Couple of White Pipes Are Laying in the Dirt — FlowWise in Maroochydore, QLD
By FlowWise April 14, 2025
Learn how long a pipe repair should last and what affects its durability. For expert pipe repairs in Sunshine Coast, contact the professionals today!
A Large Building With a Lot of Trees in Front of It — FlowWise in Maroochydore, QLD
By Admin April 14, 2025
Commercial site, be it an office, shop, or restaurant, ensuring that your plumbing functions is important. Choose Flowwise today.
A Blue Pipe is Laying in the Dirt in a Hole — FlowWise in Maroochydore, QLD
By FlowWise February 27, 2025
Discover the top 5 benefits of using Blueline technology in commercial plumbing. Boost efficiency, save money, and enhance performance today!
A Man is Standing Next to a Ladder Next to a Hole in the Ground — FlowWise in Maroochydore, QLD
By FlowWise January 15, 2025
Find reliable commercial plumbers on the Sunshine Coast for your business. Get expert commercial plumbing solutions to ensure long-lasting results.
A Camera is Taking a Picture of a Pipe — FlowWise in Maroochydore, QLD
By FlowWise December 12, 2024
Prepare for your annual plumbing inspection with these expert tips. Ensure a smooth plumbing inspection and keep your system in top condition.
A Blue Pipe is Sitting in the Middle of a Hole in the Ground — FlowWise in Maroochydore, QLD
By FlowWise November 8, 2024
Pipe relining can save you from costly repairs. Learn the top signs your pipes need relining and keep your plumbing in top shape. Read now!
A Yellow Hose is Coming Out of a Pipe on the Ground — FlowWise in Maroochydore, QLD
By FlowWise October 8, 2024
Learn how no-dig pipe repair addresses 5 common plumbing issues, saving time and money. Explore its benefits or contact us for expert repair services.
Show More