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 cause disruption to your daily life. They can result in water damage, bad smells, or even health hazards. If they’re not treated promptly blocked drains can lead to serious problems in your plumbing system, resulting in costly fixes or replacings.

Key Takeaways

  • Blockages to drains can cause disruption to your routine and can result in problems with water, bad smells, and even health risks.
  • The fat, oil and grease accumulations can stick to the pipes’ walls causing obstructions; try not to pour grease down the drain, or make use of hot water and soap to wash dishes.
  • Tree roots naturally grow into the ground searching for nutrients which may cause significant damage to pipes and even completely block them and cause flooding. It is important to regularly keep trees in the vicinity of drainage systems by pruning them.
  • Disposing of non-biodegradable materials like wet wipes, towels, etc. can result in nasty smells emanating from bins and toilets. only use toilet paper to flush down toilet.
  • Hair

In this article, we’ll review five common causes of blocked drains and how you can stop them from happening.

Cause 1. Grease, Oil and Fat buildup

Fat, grease and oil could appear as harmless substances to drain down the toilet, but as time passes, they build up in the pipes’ walls the pipes, creating an obstruction. If this happens it is impossible for water to flow freely through the drainpipes. It is best to avoid throwing grease into the drain. Alternatively, utilize soap and hot water to wash your hands when cleaning dishes since it can help remove greasy substances.

Cause 2: Tree Roots

The tree’s roots gradually extend themselves into the ground looking for nutrients. This leads to them expanding towards underground pipes. Once they are inside the pipes, tree roots can cause massive damage and could completely block them, leading to flooding. It is therefore essential if you are near trees to regularly monitor their growth around drainage systems by trimming the trees regularly.

Cause 3: Unwanted items

It’s easy to assume that flushing non-biodegradable things like the wet wipes, sanitary towel and so on. aren’t likely to cause major issues over the long haul, However, when a lot of these items are flushed down toilets they will resultantly in the accumulation of other items, thereby blocking pipes – this can result in nasty smells emanating around bins and toilets! Make sure to remember what should be flushed away and what should not (i. that 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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