5 Common Causes of Blocked Drains and How to Prevent Them

Posted by Adelaide Blocked Drains Plumbing on 3 Dec 2025

Blocked drains are a source of frustration that could disrupt your everyday life. They can lead to the destruction of your home’s plumbing, unpleasant smells, or even health hazards. If not dealt with promptly blocked drains may cause severe problems for the plumbing system, resulting in costly repairs or replacements.

Key Takeaways

  • Blocked drains can disrupt your day-to-day routine and cause the destruction of your home, bad smells, and even health issues.
  • Oil, grease and fat accumulations can stick to the walls of pipes, leading to blockages. Do not pour grease down the drain. Alternatively, use hot water and soap for cleaning dishes.
  • Tree roots naturally extend in the ground to find nutrients that could cause severe damages and blockages to pipes which can cause flooding. Ensure you maintain nearby trees around drainage systems by pruning them.
  • The flushing of non-biodegradable products like wet wipes, towels, and so on. could cause unpleasant odors emanating from bins and toilets. only take care to wash your toilet paper in the drain.
  • Hair

In this post, we’ll examine five of the most common reasons for blocked drains and how you can stop them from happening.

Cause 1. Grease, Oil and fat buildup

Grease, oil and fat may appear like harmless materials to drain down the toilet, but they can build up in the pipes’ walls pipes, creating the pipes to become blocked. When this occurs it is impossible for water to flow freely through the drainpipes. It is best to avoid pouring grease down the drain or use hot water and soap during cleaning dishes since it can help remove greasy substances.

Cause 2. Tree Roots

The tree’s roots gradually extend their roots into the earth looking for nutrients. This means that they grow toward underground pipes. Once inside the pipes, tree roots can cause massive damage and even block them, leading to flooding. It’s important therefore if you are near trees to regularly monitor the growth of your trees around drainage systems by pruning them regularly.

Cause 3: Item that has been thrown away

It’s easy to think that flushing non-biodegradable things like toilet paper, wet wipes and so on. aren’t likely to cause major issues in the end, however, if too many of these items go down toilets they will resultantly accumulate pushing others aside which can create unpleasant smells around the toilets and bins too! Always remember what should be flushed, and what shouldn’t (i. the only toilet papers should have to be flushed).

Cause 4 Hair

Additional Information

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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:

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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 Adelaide cleared today, contact Adelaide Blocked Drains Plumbing now and speak to one of our friendly team members.

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

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