5 Common Causes of Blocked Drains and How to Prevent Them

Posted by Blocked Drains Plumbing Sydney on 29 Oct 2025

Blocked drains are a source of frustration which can cause a disruption in your daily life. They could cause smelly water damage, bad smells, or even health risks. If not dealt with promptly blocked drains may cause severe problems for your plumbing system, resulting in expensive repairs or replacements.

Key Takeaways

  • Drains that are blocked can interrupt your routine and can result in the destruction of your home, bad odours and even health hazards.
  • Grease, oil and fat buildup can accumulate on the pipes’ walls, causing obstructions; try not to pour grease down drains or use soap and hot water to wash dishes.
  • The roots of trees naturally expand into the ground searching for nutrients, which could cause serious damage and completely block pipes that can lead to flooding. Regularly maintain the trees surrounding drainage systems by pruning them.
  • Flushing non-biodegradable items like wet toiletries, wipes, and so on. can create unpleasant smells emanating from toilets or bins. just flush toilet paper down the toilet.
  • Hair

In this article, we’ll explore five reasons for blocked drains and how you can avoid them.

Cause 1: Grease, Oil and fat buildup

Fat, grease, and oil might appear to be harmless substances to drain down the toilet, however, over time, they begin to accumulate on the walls of pipes, causing the pipes to become blocked. In this case it is impossible for water to flow freely through the drainpipes. The best solution is to refrain from throwing grease in the drain, or use soap and hot water when cleaning dishes because it assists to remove greasy substances.

Cause 2. Tree Roots

Over time tree roots naturally extend themselves into the ground in search of nutrients, which means that they grow toward underground pipes. Once they’re inside, the trees roots can cause a lot of damage and could completely block them, leading to flooding. It’s crucial, therefore, if you are near trees to regularly monitor their growth around drainage systems by trimming them in a regular manner.

Cause 3: Unwanted items

It’s not difficult to conclude that flushing non-biodegradable things like the wet wipes, sanitary towel etc. shouldn’t cause a lot of problems over the long haul, However, when a lot of these items are put into toilets, they can build up, pushing other items aside and in the way of pipes. This could result in nasty smells emanating around toilets/bin areas too! Be aware of what needs to be flushed, and what shouldn’t (i. the only toilet paper is to be flushed out).

Cause 4 Cause 4: Hair

Additional Information

Our 5 Star Service Promise to You

Sydney Drain Plumbing Services

Are you experiencing a clogged toilet, blocked shower drain, overflowing drains or an issue with your kitchen sink? We can help you sort out your drain blockage problem quickly and provide the following services:

  • CCTV Drain Inspections
  • Drain Clearing & Drain Cleanin
  • Drain Repairs
  • Pipe Relining
  • Blocked Stormwater Drains
  • Blocked Sewer Drains & Blocked Pipes
  • Blocked Sinks & Blocked Toilets
  • Clogged or Blocked Shower Drain

Clearing blocked drains can be difficult and it’s best to get a professional plumbing service involved to tackle it for you, To get your blocked drain in Sydney cleared today, contact Blocked Drains Plumbing Sydney now and speak to one of our friendly team members.

8 Reasons To Hire Blocked Drains Plumbing Sydney

  • 24 Hours A Day, 7 Days A Week
  • Price Up-Front, No Hidden Fees
  • Prices You Can Trust
  • Quality Workmanship Guaranteed
  • Great Reviews & Reputation
  • We’re Personable & Friendly
  • Experienced & Licenced Team
  • Get a Quote With No Obligation

We Provide 24/7 Emergency Plumbing

No one ever expects to experience a plumbing emergency, but when it does happen, you need a reliable plumbing service that can help you resolve the issue as quickly as possible.

At Blocked Drains Plumbing Sydney, we are always here for our customers, day or night, weekends or holidays. We understand that plumbing emergencies can happen at any time, and we are always prepared to help.

If you are experiencing a plumbing emergency, please do not hesitate to call us. We will dispatch one of our experienced plumbers to your home or business as soon as possible.

We will work diligently to resolve the issue and get your life back to normal as quickly as possible, contact us today.

Blocked Drains

Blocked Drains

Drain Inspection

Drain Inspection

Drain Cleaning

Drain Cleaning

Drain Repairs

Drain Repairs

About Us &

What We Do

When it comes to plumbing, you want to make sure you’re working with a qualified professional. At our company, we are licensed and insured professionals who are dedicated to providing quality plumbing services.

We’re here to help with all of your plumbing needs, such as blocked drains, CCTV drain inspections, drain repairs and pipe relining.

We understand that plumbing problems can be disruptive and expensive. That’s why we offer 24×7 emergency service, so you can get the help you need when you need it most.

We also have a 100% satisfaction guarantee on all of our work, so you can be confident that you’re making the best decision for your home.

Identify tree roots in your pipes with our cctv inspections and nabish them from your drains with our pip repairs and pipe relining.

Blocked Drain, CCTV Inspections & Pipe Relining
Make an Enquiry

Request a Quote

Fill out the form below to get in touch or call us today on
1300 870 298