5 Common Causes of Blocked Drains and How to Prevent Them

Posted by Sydney Blocked Drains Plumber on 10 Dec 2025

Blocked drains are a hassle that can disrupt your daily life. They could cause water damage, bad odours, and even health risks. If they are not addressed promptly blocked drains can lead to grave problems to your plumbing system, leading to expensive repairs or replacements.

Key Takeaways

  • Blockages to drains can cause disruption to your routine and result in problems with water, bad smells, and even health issues.
  • The fat, oil and grease accumulations can stick to the pipes’ walls, causing blockages. Do not pour grease down drains or use soap and hot water to wash dishes.
  • Tree roots naturally grow into the earth to seek nutrients, which could cause serious damages and blockages to pipes that can lead to flooding. Regularly maintain trees near drainage systems by trimming them.
  • Wet wipes, sanitary towels and so on. could cause unpleasant odors emanating from bins and toilets. make sure to use toilet paper to flush down toilet.
  • Hair

In this post, we’ll look at five common causes of blocked drains and the best way to keep them from happening.

Cause 1. Grease, Oil and fat buildup

Fat, grease, and oil might appear to be harmless substances to pour down the drain but over time they accumulate over the insides of pipes, creating obstruction. As a result the water can’t move freely through the drainpipes. The solution is to stop spilling grease down the drain. Or utilize soap and hot water when cleaning dishes because it assists to dissolve greasy substances.

Cause 2. Tree Roots

The tree’s roots gradually expand into the soil seeking nutrients. This implies that they expand toward underground pipes. Once they’re inside, the trees roots can cause a lot of damage and can completely block them, causing flooding. It is therefore essential if you have trees in the vicinity that you maintain their growth in the drainage system by trimming them in a regular manner.

Cause 3: Flushed items

It’s easy to think that flushing items that aren’t biodegradable like wet towels, sanitary wipes and so on. won’t cause any significant problems over the long haul, However, if a large amount of these items are flushed in toilets, they’ll build up, pushing other items aside and which can cause unpleasant odors to emanate around bins and toilets! Make sure to remember what should be flushed and which shouldn’t (i. that only toilet papers should have to be flushed).

Cause 4 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 Sydney cleared today, contact Sydney Blocked Drains Plumber now and speak to one of our friendly team members.

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