5 Most Common Reasons of Blocked Drains in Sydney

Blocked drain repairs are not an easy task, so it is critical for households and business owners to properly dispose of waste and clear drains regularly to avoid blockages. 

¬†Blocked or clogged drains can drastically impact the plumbing system, so it’s important to understand what is causing the block in the first place. In this article, we will look at the five common reasons for blocked drains in Sydney.

drain, bathroom sink, sanitary

Table of Content

Tree Roots

Tree roots are one of the most common reasons for blocked drains in Sydney. They can grow and infiltrate subterranean pipelines over time, generating clogs that inhibit appropriate water flow.

This is especially true in older homes and businesses, where pipes are more prone to damage. Tree roots can cause severe damage to pipelines, resulting in expensive repairs if not addressed promptly.

Grease and Fat

Another typical reason for blocked drains in Sydney is grease and fat. When grease and fat are dumped down the drain along with food waste, they can build up and solidify over time, causing blockages, which even pouring boiling water or homemade drain cleaner cannot solve.

Therefore it is critical to properly dispose of grease and fat rather than pouring it down the kitchen drain. Allowing oil and fat to cool and solidify in a container before throwing it away is one approach to do this.

Food scraps are also one of the most common causes of blocked kitchen sinks; without regular maintenance, you will always come across a plumbing issue now and then. To prevent blocked drains in your kitchen sink, you should always ensure food waste is thrown into the garbage disposal.

ot grease, hot oil

Foreign Objects

Foreign objects frequently cause blocked drains in Sydney. Wipes, sanitary products, and nappies are examples of such things. These things might become lodged in the pipes and obstruct the water flow.

It is critical to remember that only human waste and toilet paper should be flushed into the toilet. Anything else should be discarded in the trash; sometimes, too much toilet paper can also cause trouble to your drainage system.

Hot water heater is also a common cause due to the mineral deposits accumulating in your drains, while stormwater drains should also be taken good care of.

Without proper plumbing service and maintenance, clearing blocked drains can become a regular occurrence.

toilet paper

Hair and Soap Scum

Human and animal hair are typical causes of clogged shower, laundry, and bathroom drains. When human and animal hair mingles with other elements, such as soap residue and grease, the situation becomes even worse.

Over time, hair and soap dirt can accumulate in the pipes and cause blockages. This is especially true in shower drains and kitchen sinks.

Therefore It is important to regularly clean shower drains to prevent soap buildup and hair dirt. A simple solution of baking soda and vinegar can be poured down the drain to help break up any buildup.

Structural Issues

Structural issues, such as cracks and collapses in the sewer pipes, can also cause blocked drains in Sydney. This is especially true for older homes and businesses, where the pipes may have deteriorated over time.

These blockages can be more difficult to detect and repair and may require a professional plumber’s help.

Structural Issues


In conclusion, drain blockages and a clogged toilet are widespread problems that can cause a variety of inconveniences for Sydney residents and business owners.

By understanding the most prevalent causes of blocked drains, you may take preventative measures. This includes correctly disposing of grease and fat, flushing only human waste and toilet paper down the toilet, cleaning shower drains on a regular basis and fixing any structural issues as they occur.

If you have a blocked drain or sewer, it is critical to contact drain specialists or professional Sydney plumbers who know everything about blocked drains or blocked sewers and can diagnose and repair the problem quickly and efficiently.

Regular cleaning

Sometimes when a block is not cleared on time, it could lead to a plumbing emergency, clogged toilets, misaligned pipes, leaking taps and even the need for pipe relining.

More often than, DIY remedies like pouring hot water and using drain snakes in the sewer lines don’t get the plumbing job done.

Unblocking drains and understanding drains, and sewer line is not an easy task and should definitely be outsourced to a professional service.

Without the exact knowledge, you might not be able to accurately fulfil the plumbing needs required, and you could end up making the problem worse.

In conclusion, blocked drains are a common issue that can cause major inconvenience and damage to your property.

By understanding the common causes of blocked drains, you can take preventive measures to avoid them from occurring.

However, if you experience a blocked drain or sewer, it’s crucial to seek professional help to quickly diagnose and help with the blocked drain repair. You can get a free quote for your blocked drain plumber and plumbing requirements here at Aquatrade Plumbing Services.

Here at Aquatrade Plumbing Services, we are considered one of the best Sydney plumbing services; our highly capable and trained professionals can take care of all your emergency plumbing services. To learn more about us and our 24/7 on-call plumbing services, call 433 504 291.


Q1: How do I know if I have a blocked drain?

Drain issues are a common problem experienced by homeowners and renters, caused by clogs, slow draining, foul odours, gurgling sounds, and leaks. If you have any of these, then promptly addressing the issues can prevent more severe plumbing problems and water damage to your home.

Q2: What are the most common causes of a drainage problem?

The major cause of drainage problems is usually a blockage or obstruction in the drain pipe that prevents water from flowing freely. A variety of factors, such as the accumulation of hair, food particles, grease, mineral buildup, or foreign objects in the drain, can cause these problems.

Other common causes of drainage problems include damaged or corroded pipes, improper installation and tree roots that grow into underground pipes and cause blockages.

Failing to address drainage problems promptly can lead to more severe plumbing issues, including leaks, water damage, and sewage backups.

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