5 Common Causes of Blocked Drains and How to Prevent Them

Posted by Perth Blocked Drains Plumber on 7 Dec 2025

Blocked drains are a hassle that can disrupt your daily life. They could cause flooding, bad smells, and even health risks. If they’re not treated promptly blocked drains can lead to grave problems to the plumbing system, resulting in expensive fixes or replacings.

Key Takeaways

  • Blocked drains can disrupt your day-to-day routine and cause water damage, bad smells, and even health issues.
  • Fat, oil and grease buildup can accumulate on the pipes’ walls, causing blockages. Avoid pouring grease down drains or use soap and hot water when washing dishes.
  • Tree roots naturally extend in the ground to find nutrients. This can cause massive damage and completely block pipes and cause flooding. It is important to regularly maintain nearby trees around drainage systems by pruning them.
  • Flushing non-biodegradable items like wet towels, wipes and sanitary pads etc. could cause unpleasant odors emanating from bins and toilets. make sure to wash toilet papers down drain.
  • Hair

In this article, we’ll review five common causes of blocked drains and the best way to avoid them.

Cause 1. Grease, Oil and Fat buildup

Grease, oil and fat may seem like harmless substances to flush down the drain, but as time passes, they build up on the walls of the pipes causing a blockage. In this case, water is unable to flow freely through the drainpipes. The solution is to stop pouring grease down the drain. Or use soap and hot water while cleaning dishes as it helps break down grease-based substances.

Cause 2. Tree Roots

As time passes, tree roots naturally expand into the soil seeking nutrients. This results in them growing towards underground pipes. Once inside the pipes, tree roots could cause significant damage and may completely block them, causing flooding. It is therefore essential if you have trees around that you regularly maintain the growth of your trees around drainage systems by trimming them on a regular basis.

Cause 3: Items that are soiled

It’s easy to think that flushing items that aren’t biodegradable like wet wipes, sanitary towels and so on. shouldn’t cause a lot of problems in the long term, However, if a large amount of these products are flushed into toilets, they can accumulate pushing others aside that block pipes. This can cause unpleasant odors to emanate around bins and toilets! Make sure to remember what should be flushed away and what should not (i. e only toilet paper needs to 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 Perth cleared today, contact Perth Blocked Drains Plumber now and speak to one of our friendly team members.

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