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Top 10 Causes of Blocked Drains in Sydney and How to Prevent Them

Have you ever been stuck/delayed on a rushed morning, annoyed and unable to go about your routine quickly because of blocked drains?

Blocked drains are a common issue for many homeowners in Sydney. We understand your frustrations, whether it’s a slow-draining sink or a clogged bathroom. These problems cause significant inconveniences and, after some time, can even be hazardous to your health.

Understanding the causes of blocked drains can help you prevent them and maintain proper plumbing. 

So, read on to learn the top 10 causes of clogged drains and how to avoid them.

Hair Build-up

One of the most common culprits behind blocked drains is hair. Whether it’s our or our pets’ hair, it easily gets caught up in bathroom drains, forming clumps that obstruct water flow.

Prevention Tip

Install drain screens in your shower and regularly clean them to prevent hair from accumulating.

Grease and Fat

Have you ever poured grease or fat down the kitchen sink? It may seem harmless at the time, but as these substances cool, they solidify and clog your pipes, causing blockages.

Prevention Tip

Consider disposing of grease in containers and through the trash. Running hot water and detergent through the sink after cooking also helps clear any residual fat, keeping your sink and pipe area clean.

Tree Roots

Don’t we love Sydney’s beautiful tree-lined streets? We may love to look at it, and although it is healthy for the environment, it may still cause some trouble for your drains. These tree roots can grow into underground pipes, causing severe blockages.

Prevention Tip

Consider conducting regular inspections and maintenance to help detect tree root intrusion early. If you already have trees near your drainage system, consider installing root barriers.

Soap Filth and Residue

You may feel perplexed that soap is on this list because soap seems harmless!

But over time, soap filth and particles can build up in your drains, especially if you use soaps made with fats or oils. This residue, combined with other debris, often creates blockages.

Prevention Tip

Try using liquid soap instead of bar soap, and consider flushing your drains frequently with hot water and vinegar to break down soap filth and residue.

Foreign Objects

It is common to find children’s toys, jewellery or small accessories and items in the drains or toilets, causing blockages.

Prevention Tip

Please find out more about what can and shouldn’t be discarded down the drain and discuss it with your family. Consider installing drain guards and keeping small items away from sinks and toilets.

Toilet Papers and Hygiene Products

Toilet paper is supposed to break down in water, but using too much leads to blockages. Hygiene products, including but not limited to sanitary napkins, tampons and wipes, are not supposed to be flushed and cause severe clogs.

Prevention Tip

Use toilet paper sparingly and avoid flushing anything other than toilet paper and human waste. You can add a bin in the bathroom or toilet for disposing of hygiene products or other items.

Mineral Build-up

We all know Sydney and it’s hard water. This water contains minerals that build up inside your pipes over time, leading to restricted water flow and eventual blockages.

Prevention Tip

Consider installing a water softener if you live in an area with hard water. Descale your pipes regularly to keep them free of mineral build-up.

Structural Defects

Pipes, especially old ones, can crack, sag or become misaligned because of various factors, including natural ground movement. These structural issues can lead to recurring blockages.

Prevention Tip

Let a professional inspect your plumbing system and repair any structural issues before they become severe.

Poor Drainage

Improperly designed drainage systems can lead to recurring blockages, like pipes without the proper slopes, which may need help to move waste efficiently.

Prevention Tip

Ensure that a professional team instals your drainage system and understands the specific needs of your space and property.

Extreme Weather

Like us, Sydney’s heavy rains can overwhelm drainage systems, especially if gutters and downpipes are clogged with leaves and debris.

Prevention Tip

Clean your gutters and downpipes regularly and ensure your drainage system can handle heavy rain.

 

Why Dial Up Plumbing is Your Go-To Plumbing Expert

With 24-hour service on demand, upfront pricing and rapid turnaround, we stand out as the trusted choice for homeowners and businesses.

Our team of experts is committed to exceptional service and fast response times. We are licensed professionals who handle everything from routine maintenance to emergency repairs with precision. 

With years of experience in Sydney’s unique plumbing challenges, we offer reliable solutions, transparent pricing, and a customer-first approach, ensuring your plumbing issues are resolved quickly and efficiently.

 

Don’t Let a Blocked Drain Disrupt Your Day!

Blocked drains are not just an inconvenience—if left unchecked, they can lead to costly repairs.

You can avoid most drainage issues by understanding the common causes and taking preventive measures.

Contact Dial Up Plumbing today if you’re facing persistent blockages or need expert advice. Our experienced team is here to help keep your drains flowing smoothly.

 

FAQ

  • What are the signs of a blocked drain?

Common signs include slow-draining water, unpleasant odours from the drain, gurgling sounds, and water backups in sinks, showers, or toilets.

  • Can I prevent tree roots from blocking my drains?

Yes, regular inspections and maintenance can help detect root intrusion early. Installing root barriers and keeping trees safe from your pipes can also reduce the risk of blockages.

  • What should I do if my drain is already blocked?

You can use a plunger or drain cleaner for minor blockages. However, it’s best to contact a professional plumber like Dial Up Plumbing for persistent or severe blockages to ensure the problem is resolved effectively without damaging your pipes.

Smiling man with a beard in a navy Dial Up Plumbing polo shirt, standing with arms crossed.

Ben Harb

Owner/ Manager

Ben Harb is a highly skilled and experienced professional in the plumbing industry, with a particular focus on blocked drains and pipe relining. A qualified licensed plumber as well as a pipe relining specialist who can tackle an extensive range of plumbing issues.

Award trophies for Australian Small Business Champion 2023, Local Business Awards 2022, and 2021 Service & Trade Awards.
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