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How To Clear A Blocked Toilet Yourself

toilet being plunged using plunger

A blocked toilet can be a pretty unpleasant experience. It can be smelly and embarrassing (especially if you happen to be a visitor!). It can be expensive to clean up household items that have been damaged by an overflowing toilet, not to mention a health hazard.

What Are The Causes Of A Toilet Blockage?

A blocked toilet is usually caused by the following:

  • Too much toilet paper
  • Non-degradable materials (e.g. sanitary products, wet wipes)
  • Foreign objects (e.g. toys, rags)
  • Grease or oil buildup
  • Hair
  • A malfunctioning flush valve or flapper
  • A partial clog that restricts water flow
  • Blocked sewer

In some cases, a blocked sewer line can also cause a blocked toilet. A blocked sewer line is a blockage that occurs in the main sewer pipe leading from a building’s plumbing system to the municipal sewer system. The blockage can be caused by a buildup of various substances such as grease, hair, and non-degradable materials (e.g. wipes, sanitary products). It can also be caused by foreign objects that have been flushed down the toilet, tree roots that have grown into the pipes, or corrosion and deterioration of the pipes over time. A blocked sewer line can cause sewage backups, slow drains, and unpleasant odours in the building.

how-cctv-drain-inspections-work

How To Unblock a Toilet Drain Yourself

Here are 4 DIY methods to unblock a toilet:
 

1. Plunger

2. Closet Auger

3. Hot Water and Dish Soap

4. Baking Soda and Vinegar

1. Use a plunger: A plunger can help clear a simple clog by creating suction that dislodges the blockage.

To use a plunger on a blocked toilet, follow these steps:

  1. Fill the toilet bowl with enough water to cover the plunger cup.
  2. Place the plunger directly over the drain and create a seal by pressing the cup against the bottom of the bowl.
  3. Pump the plunger up and down rapidly, using a forceful and rhythmic motion. The suction created by the plunger will help loosen and remove the blockage.
  4. Repeat the plunging motion several times.
  5. After several plunges, quickly remove the plunger and check if the water in the bowl drains.
  6. If the water drains, flush the toilet several times to clear out any remaining debris.
  7. If the water does not drain, repeat the plunging process until the clog is cleared.

2. Use a toilet auger: A toilet auger is a plumbing tool that can reach deeper into the toilet drain to remove the blockage.

To use a toilet auger to fix a blocked toilet, follow these steps:

  1. Turn off the water supply to the toilet by turning the valve clockwise under the tank.
  2. Flush the toilet to empty the bowl and make sure the water level is low.
  3. Place the auger into the toilet bowl and position the snake part into the drain opening.
  4. Turn the handle clockwise to feed the snake into the pipes until you feel resistance. This resistance is the blockage.
  5. Crank the auger handle back and forth to break up and remove the clog.
  6. Slowly retract the auger, making sure to remove any debris that may have been dislodged.
  7. Turn the water supply back on and flush the toilet several times to clear any remaining debris and ensure the clog has been cleared.
  8. If the blockage persists, repeat the process or call a plumber for further assistance.

3. Hot water and dish soap: Pour a mixture of hot water and dish soap into the toilet bowl and wait a few minutes. The soap can help break down grease or oil buildup and the hot water can help loosen the clog.

To use hot water and dish soap to clear a toilet clog, follow these steps:

  1. Pour about 4 cups of hot water into the toilet bowl.
  2. Squeeze about 1/4 cup of dish soap into the water.
  3. Wait for 10-15 minutes to let the soap and hot water work on the clog.
  4. Flush the toilet several times to clear the blockage.
  5. If the blockage is not cleared, repeat the process or try a different method.

Note: Make sure the water is hot, but not boiling, to avoid cracking the porcelain bowl.

4. Baking soda and vinegar: Pour a mixture of baking soda and vinegar into the toilet bowl and wait a few minutes. The mixture will fizz and help break down the clog.

To use baking soda and vinegar to clear a blocked toilet, follow these steps:

  1. Pour about 1 cup of baking soda into the toilet bowl.
  2. Add about 1 cup of white vinegar to the bowl.
  3. The mixture will start to fizz.
  4. Wait about 15 minutes for the fizzing to subside.
  5. Flush the toilet several times to clear the clog.
  6. If the clog is not cleared, repeat the process or try a different method.

Note: This method can take some time to work and may require multiple attempts to clear the clog.

If these methods don’t work, it may be necessary to call a local, Sydney plumber or use chemical drain cleaners, which can be harsh on pipes and should be used with caution.

Unblocking A Toilet Using A Professional, Drain Clearing Company

You may have some luck in loosening the blockage using a plunger but generally plunging will only work for small blockages. If you see water backing up in the sinks or showers whenever you flush, it’s time to call a professional drain clearing company. Professional drain clearing companies will be able to clear the line completely using specialised equipment such as a high pressure water jet.

Professional drain clearing should keep your drains clear for at least 3 months. However depending on the condition of your drains and proximity to aggressive tree root systems, drains can block up again more quickly.

The Best Blocked Drain Solution?

If you experience a blocked toilet repeatedly it could indicate there is something more seriously wrong with your drains. If so you will need to ask a drain clearing company to conduct a CCTV inspection of your drains. They will diagnose the problem, so you can make an informed decision about how to fix a blocked toilet.

If you’re fed up with a smelly toilet and the worry of it backing up into your bathroom call Pipe Relining Solutions. We can investigate and provide you with a free quote to fix your problem permanently. Call us today on 1300 366 834.

Tools You Need Before You Start

Before attempting to clear a blocked toilet, it helps to have the right tools ready. Acting quickly reduces overflow risk and limits mess when the toilet keeps blocking.

Basic Items To Have On Hand

  • Rubber gloves
  • Old towels or rags
  • Bucket
  • Dishwashing liquid
  • Baking soda and vinegar
  • Toilet brush or plastic wrap

Understanding what plumbing work is legally allowed at home is important, as outlined in this guide on what plumbing you can do without a licence.

Step-By-Step Ways To Clear A Blocked Toilet

If the blockage is minor, these methods may help unblock a toilet without specialist tools. Stop immediately if water rises rapidly.

Hot Water And Dishwashing Liquid

Pour dishwashing liquid into the bowl, followed by hot (not boiling) water. Let it sit for 10–15 minutes to loosen waste.

Baking Soda And Vinegar

Add baking soda, then vinegar. The reaction may help break down soft obstructions.

Toilet Brush Or Wrap Method

A toilet brush wrapped in plastic can create pressure similar to a plunger when pushed gently.

For methods that avoid plungers, step-by-step instructions are detailed in this guide on how to unblock a toilet without a plunger.

What To Do If The Water Level Keeps Rising

When water rises quickly, stop flushing immediately. Remove excess water with a bucket to prevent overflow. Shut off the toilet water valve behind the bowl if necessary.

Persistent rising water often indicates a deeper issue rather than a surface blockage. Drainage behaviour during heavy rainfall can sometimes relate to broader systems, as explained in this stormwater overview.

When A Blocked Toilet Means A Sewer Problem

A blocked toilet is often linked to the sewer line when multiple fixtures back up at once. Gurgling sounds, sewage smells, or overflow outside the property suggest sewer blockage or toilet issues rather than a simple blockage.

Homeowners facing these symptoms often move beyond DIY and seek help through blocked drain services in Sydney once sewer involvement is suspected.

Sydney Rules About DIY Plumbing

DIY plumbing in NSW is limited for safety and compliance reasons. Work involving sewer connections, drainage alterations, or pipe repairs must be carried out by licensed professionals. NSW requirements are outlined under plumbing and drainage compliance regulations, which clearly define when DIY must stop.

When To Call A Licensed Plumber Or Relining Specialist

Call a professional if:

  • The toilet keeps blocking repeatedly
  • Wastewater backs up into other fixtures
  • Sewage smells persist
  • External overflow occurs

Severe blockages linked to the sewer are explained further in this guide on how to unblock a sewage drain. If inspections reveal pipe damage, long-term repair options for Sydney homeowners often include internal relining, with pricing outlined in the pipe relining cost guide.

Get Help Fast Before The Blockage Gets Worse

If DIY steps fail or sewage signs appear, stop immediately and arrange professional assistance. A proper inspection can confirm whether the issue is local or linked to the sewer and prevent further damage to your home.

FAQs

Recurring blockages often point to pipe damage, root intrusion, or sewer restrictions rather than surface waste.

Minor blockages may clear with safe DIY methods. Sewer-related issues require professional help.

Many chemicals damage pipes and rarely fix the underlying problems.

Multiple fixtures backing up and sewage smells usually indicate sewer involvement.

Relining repairs damaged pipes internally, reducing repeat blockages caused by cracks or roots.