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5 Tell-tale Signs Your Sewer Pipes Are Blocked

Sewer pipes are an essential part of any building’s plumbing system. They are responsible for transporting wastewater from toilets, sinks, and other plumbing fixtures to the municipal sewer system or septic tank. However, when sewer pipes become blocked, they can cause a range of problems, from foul smells to backups and even property damage. If you are facing a blocked sewer pipe, we recommend that you get in contact with LCL Drainage and Plumbing Services. Our team uses modern technology to rapidly and effectively unclog sewer pipes.

Signs that Sewer Pipes are Blocked

Slow Draining

If you notice that water is taking longer than usual to drain from your sinks, bathtubs, or toilets, it could be a sign of a blocked sewer pipe. This is because the wastewater has nowhere to go and is backing up into your plumbing fixtures. 

Bad Smells

One of the most unpleasant signs of a blocked sewer pipe is a foul smell emanating from your drains. This smell is caused by decomposing waste that is trapped in the pipes and can be particularly strong in the basement or lower floors of your property.

Gurgling Sounds

If you hear gurgling sounds coming from your toilet or sink when you flush or drain water, it could be a sign of a blocked sewer pipe. This is because the air is trapped in the pipes and is trying to escape.


If wastewater from one plumbing fixture is backing up into another, it is a clear sign of a blocked sewer pipe. For example, if water from your toilet is coming up in your shower or bathtub, it’s time to call a plumber. 

Lawn Damage

If you notice that your lawn is unusually green or lush in certain areas, it could be a sign of a blocked sewer pipe. When pipes are blocked, wastewater can seep out and fertilise the surrounding soil, leading to healthier grass and plants. 

Pest Infestations

Blocked sewer pipes can provide an ideal breeding ground for pests like cockroaches and rats. If you notice an increase in pest activity, it could be a sign of a blocked sewer pipe. 

Mould or Mildew

A blocked sewer pipe can cause excess moisture to accumulate in your home, leading to mould and mildew growth. If you notice mould or mildew in areas like your basement or bathroom, it could be a sign of a blocked sewer pipe. 

How to Unblock a Blocked Sewer Pipe

A blocked sewer pipe is a common problem that can lead to serious consequences if not addressed promptly. It can cause sewage backups, unpleasant odours, and even health hazards. If you’re dealing with a blocked sewer pipe, don’t panic.

Use a plunger

A plunger is a simple and effective tool for unclogging a blocked sewer pipe. Fill the sink or tub with enough water to cover the plunger’s rubber cup. Place the plunger over the drain and push it down gently, creating a vacuum. Then, pull up quickly to create pressure that dislodges the blockage.

Use baking soda and vinegar

Baking soda and vinegar can be used to dissolve minor blockages in sewer pipes. Pour a cup of baking soda down the drain, then follow it up with a cup of vinegar. Cover the drain and then let the mixture sit there for 30 minutes. Then, pour boiling water down the drain to flush out the dissolved blockage. 

Use a high-pressure water jet

 A high-pressure water jet is a powerful tool that can blast away even the toughest blockages. This method is best left to the professionals, as it requires specialised equipment and training to use safely. You can call LCL Plumbing & Drainage to get your sewer blockage fixed. 

Use chemical drain cleaners

Chemical drain cleaners can be effective in dissolving minor blockages, but they can also damage the pipes if used improperly. Always follow the manufacturer’s instructions carefully and wear gloves and eye protection when using chemical drain cleaners. 

Call a professional plumber

If none of the above methods works, it’s time to contact a licensed plumber. A plumber has the knowledge, experience, and equipment to diagnose and fix even the most stubborn blockages. A blocked sewer pipe is a problem that requires prompt attention. While some blockages can be resolved with simple DIY methods, others require the assistance of a professional plumber. 

Causes of Sewer Pipe Blockage

When sewer pipes become blocked, they can cause significant problems for homeowners and businesses. Understanding the causes of sewer pipe blockages can help prevent them from occurring and avoid costly repairs. 

Tree Roots

One of the most common causes of sewer pipe blockages is tree roots. Trees are attracted to the moisture and nutrients in the sewer lines, causing their roots to grow into the pipes. As the roots continue to grow, they can cause blockages and even damage the pipes. 

Flushed Objects

Flushing objects down the toilet can cause sewer pipe blockages. Items such as wipes, paper towels, feminine hygiene products, wet wipes, and other non-degradable materials can get stuck in the pipes and cause blockages. 

Grease Buildup  

Grease can build up in sewer pipes over time, causing blockages. When grease is poured down the drain, it can stick to the inside of the pipes, creating a barrier that prevents water from flowing through. 

Structural Damage 

Over time, sewer pipes can deteriorate and become damaged, causing blockages. Cracks, holes, and collapsed pipes can all contribute to blockages and other plumbing issues. Additionally, sediment can accumulate in sewer pipes, causing blockages. This buildup can occur from minerals in the water, rust from ageing pipes, and other sources. 

Poor Installation

If sewer pipes are not installed correctly, they can cause blockages. Pipes that are not properly connected or have incorrect angles can create areas where debris can collect and cause blockages. 

There are many causes of sewer pipe blockages, and they can cause significant problems for homeowners and businesses. By understanding the causes of blockages, you can take steps to prevent them from occurring. If you do experience a blockage, it’s important that you call a professional plumber service like LCL Drainage and Plumbing to address the issue promptly and avoid further damage to your plumbing system. 

Contact us Today to Fix Your Blocked Sewer Pipe

Blocked sewer pipes can cause a range of problems, from foul smells and slow draining to property damage and increased water bills. If you notice any of the signs mentioned above, it’s essential to call a plumber to investigate the problem and fix it as soon as possible. Early detection and repair can save you from costly repairs and property damage. 

Get the work done correctly the first time and save time and money with LCL. With fully equipped vehicles that include CCTV drain cameras and high-pressure water jetters, our plumbers have access to the most recent technology. At LCL Plumbing, we take pleasure in offering our clients fair and reasonable rates. Regardless of your budget, we have a practical solution for you. 


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