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 which can cause a disruption in your daily life. They can cause the destruction of your home’s plumbing, unpleasant smells, and even health risks. If they are not addressed promptly, blocked drains can cause severe problems for the plumbing system, leading to costly repair or even replacement.

Key Takeaways

  • Blockages to drains can cause disruption to your day-to-day routine and cause water damage, bad odours and even health hazards.
  • Oil, grease and fat build-up can clog the walls of pipes, leading to blockages; avoid pouring grease down the drain. Alternatively, use soap and hot water when washing dishes.
  • Tree roots naturally extend themselves in the ground to find nutrients, which could cause serious damages and blockages to pipes which can cause flooding. Ensure you maintain the trees surrounding drainage systems by pruning them.
  • Disposing of non-biodegradable materials like wet wipes, towels, and so on. can cause unpleasant smells emanating from toilets or bins. make sure to wash toilet papers down toilet.
  • Hair

In this article, we will review five common causes of blocked drains and ways to avoid them.

Cause 1. Grease, oil and Fat buildup

Oil, grease, and fat might appear to be harmless substances to dump down the drain however, over time, they begin to accumulate on the walls of pipes, which causes the pipes to become blocked. In this case it is impossible for water to flow freely through the drainpipes. The solution is to stop throwing grease down the drain. Or use soap and hot water while cleaning dishes because it assists to break down greasy substances.

Cause 2. Tree Roots

Over time tree roots naturally extend into the ground searching for nutrients which means that they grow toward underground pipes. Once inside the pipes, trees roots can cause a lot of damage and could completely block them, causing flooding. It’s crucial, therefore, if you have trees in the vicinity that you regularly maintain their growth in the drainage system by trimming them regularly.

Cause 3: Items that are soiled

It’s not difficult to conclude that flushing non-biodegradable items like toilet paper, wet wipes and so on. shouldn’t cause a lot of problems in the long term, however, if too many of these items are flushed in toilets, they’ll in the accumulation of other items, thereby in the way of pipes. This could cause unpleasant odors to emanate in the vicinity of toilets or bins! Be aware of what needs to be flushed and which shouldn’t (i. that only toilet paper is to 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 Adelaide cleared today, contact Adelaide Blocked Drains Plumbing now and speak to one of our friendly team members.

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