Toilet Keeps Plugging Up: Fix It Yourself

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Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

To fix a toilet that keeps plugging up, start by using a plunger to dislodge the clog. If that doesn't work, try a toilet auger. If frequent clogs occur, inspect the drain line for buildup or a damaged wax ring.

Confirm the symptom

Toilet frequently clogs after use
Water level in bowl rises after flushing
Slow drainage even after plunging
Clogs return within a day or two
Multiple flushes needed to clear water

Tools and prep

Rubber plunger
Toilet auger (snake)
Rubber gloves
Bucket (to catch overflow)
Old towels or rags
Plumber's snake (optional)
Toilet brush
Turn off water supply valve behind the toilet
Ensure the area is well-ventilated

Step-by-step troubleshooting

Check Water Supply
Do: Turn off the water supply valve located behind the toilet.
Observe: Water stops flowing into the tank and bowl.
Means: The toilet is isolated, preventing overflow during troubleshooting.
Next: Proceed to Step 2
Use a Plunger
Do: Fill the bowl with enough water to cover the plunger rubber. Plunge firmly and steadily for 20–30 seconds.
Observe: Water level in the bowl decreases and drains.
Means: The clog is dislodged and the toilet is functioning normally.
Next: Skip to Step 7
Try a Toilet Auger
Do: Insert the auger into the drain hole and push it through until resistance is met. Rotate the handle to break up or retrieve the clog.
Observe: Water drains more freely after augering.
Means: The clog is partially or fully cleared.
Next: Proceed to Step 4
Inspect for Obstructions
Do: Check the auger for any retrieved objects (e.g., toys, excessive toilet paper).
Observe: Obstructions are identified and removed.
Means: The cause of the clog is visible and can be addressed.
Next: Proceed to Step 5
Clean the Bowl and Trapway
Do: Use a toilet brush to scrub the bowl and trapway to remove any buildup.
Observe: The bowl and trapway are visibly clean.
Means: Buildup that could contribute to clogs is removed.
Next: Proceed to Step 6
Check for Wax Ring Issues
Do: Inspect the base of the toilet for cracks or water seepage. A damaged wax ring can cause partial blockages.
Observe: Water seepage or a loose toilet base is noted.
Means: The wax ring may need replacement to ensure a proper seal.
Next: Proceed to Step 7
Test the Toilet
Do: Turn the water supply back on and flush the toilet multiple times.
Observe: Water drains quickly and the toilet flushes normally without clogging.
Means: The issue is resolved and the toilet is functioning properly.
Next: Complete

Common causes

Cause	Likelihood	Difficulty	Part often needed
Excessive toilet paper use Too much toilet paper can create a blockage in the trapway or drain line.	Common	Easy	None
Foreign objects in the toilet Toys, feminine hygiene products, or other items can cause recurring clogs.	Sometimes	Easy–Medium	Toilet auger
Mineral or soap buildup Hard water or frequent use of bath products can lead to buildup in the trapway.	Sometimes	Easy–Medium	Toilet cleaner
Clogged main drain line A blockage in the main sewer line can cause multiple toilets or drains to back up.	Rare	Hard	Professional plumbing service
Damaged wax ring A deteriorated wax ring can allow partial blockage or improper sealing.	Sometimes	Medium	Wax ring
Tree roots in sewer line Tree roots can infiltrate sewer lines and cause recurring blockages.	Rare	Hard	Professional plumbing service
Low-flush toilets or old plumbing Older toilets with low water usage may struggle to clear waste effectively.	Sometimes	Medium	Toilet replacement

Parts matching

Common parts needed to fix a toilet that keeps plugging up include:

Toilet auger – For removing stubborn clogs
Wax ring – To replace if the toilet base is leaking or improperly sealed
Toilet cleaner – For removing mineral or soap buildup in the bowl and trapway
Toilet brush – For regular cleaning and maintenance
Plumber's snake – For clearing deep or persistent clogs

Choose a toilet auger with a flexible cable and a corkscrew tip for best results in clearing clogs.

When to call a professional

The toilet continues to clog despite multiple plunging and augering attempts
Water backs up into other drains or the shower/bathtub
You suspect a main sewer line blockage or tree root intrusion
The toilet base is cracked or the wax ring is damaged and you're not comfortable replacing it
You hear gurgling sounds from the toilet or other plumbing fixtures

FAQ

Can I use a chemical drain cleaner for a clogged toilet?

No, chemical drain cleaners can damage the toilet porcelain and plumbing pipes. Use a plunger or toilet auger instead.

How often should I clean my toilet to prevent clogs?

Clean your toilet bowl and trapway at least once a week with a toilet cleaner to prevent buildup.

What should I do if the clog is in the main sewer line?

Stop using the toilet and call a professional plumber to inspect and clear the main sewer line.

Can a low-flush toilet cause frequent clogs?

Yes, low-flush toilets may not provide enough water to clear waste effectively, leading to frequent clogs.

How do I know if the wax ring needs to be replaced?

If water is seeping around the base of the toilet or the toilet feels loose when pressed down, the wax ring likely needs replacement.