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    Blocked Drains6 min read10 March 2026

    How to Prevent Blocked Drains: A Melbourne Homeowner's Guide

    By Joel - Licensed Plumber, Hobsons Bay Plumbing

    Blocked drains are one of the most common - and preventable, plumbing emergencies in Melbourne's western suburbs. Whether it's a slow-draining shower, a gurgling toilet, or a full sewer backup, most blockages build up over weeks or months before they cause a problem.

    The Top Causes of Blocked Drains in Melbourne

    • Tree roots: The #1 cause of sewer blockages in suburbs like Williamstown, Yarraville, and Altona. Roots seek out the moisture in clay pipes and can crack joints to get inside.
    • Grease and fat: Kitchen drains are notorious for grease buildup. Oil solidifies inside the pipe and catches food scraps, creating a progressively tighter blockage.
    • Wet wipes and sanitary products: Despite "flushable" labels, these products don't break down in pipes and are a leading cause of toilet blockages.
    • Hair: Bathroom drains accumulate hair over time, especially in shower waste traps.
    • Foreign objects: Kids' toys, excessive toilet paper, cotton buds - they all end up causing blockages.

    Prevention Tips That Actually Work

    In the Kitchen

    • Never pour cooking oil or grease down the drain. Let it cool, wipe it into the bin with paper towel.
    • Use a sink strainer to catch food scraps - empty it into the bin, not the drain.
    • Run hot water for 30 seconds after washing dishes to help flush soap residue.

    In the Bathroom

    • Install a hair catcher over the shower drain - clean it weekly.
    • Only flush toilet paper and human waste. Everything else goes in the bin.
    • Clean pop-up basin plugs monthly - they trap hair and soap scum.

    Outside

    • Keep stormwater grates clear of leaves and debris, especially before winter.
    • Consider having large trees near sewer lines assessed - root barriers or regular maintenance jetting can prevent expensive emergency callouts.
    • Know where your inspection openings (IOs) are located - this speeds up any future drain work.

    When to Book a CCTV Drain Inspection

    A CCTV drain inspection gives you a clear picture of what's happening inside your pipes - before a small issue becomes an emergency. We recommend an inspection if:

    • You've had recurring blockages in the same drain
    • Your home is over 30 years old with original clay pipes
    • You're buying a property and want to check the drain condition
    • You notice damp patches, sinkholes, or sewage smells in the yard

    Want to get ahead of blockages? Book a preventive CCTV drain inspection - we'll show you the footage and recommend a maintenance plan if needed. See our blocked drain services page for more information.

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