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Why Your Toilet Keeps Clogging

It's not unusual for a toilet to clog occasionally, especially if you're fond of flushing non-flushable items like paper towels. However, a toilet that clogs…

May 05, 2026
Why Your Toilet Keeps Clogging

It’s not unusual for a toilet to clog occasionally, especially if you’re fond of flushing non-flushable items like paper towels. However, a toilet that clogs repeatedly indicates a bigger problem that needs to be addressed. In this article, Mr. Rooter Plumbing explores the five common reasons your toilet keeps clogging and effective solutions to each issue.

Mr. Rooter Plumbing Can Help If Your Toilet Keeps Clogging

Mr. Rooter Plumbing is here to help you with all of your toilet plumbing needs. If you’re in need of clogged toilet repair, toilet replacement, drain cleaning, or any other plumbing repairs, reach out to Mr. Rooter Plumbing.

Our Customers Reviews

Larry R.

Howell Township, NJ

It was a late Saturday night. We had a super stubborn clog in some old galvanized pipes. Mr. Rooter send out Phil. Phil was great! He found the problem pretty quick. With determination and professionalism he final got it cleared out. I would recommend Mr. Rooter and Phil to anyone! He even cleaned up. We are so happy we choose Mr. Rooter!

Rose Bernard

Red Bank, NJ

We had a plumbing emergency and found Mr. Rooter while frantically searching for a 24-hour plumber. We feel like we hit a gold mine. Not only did we get a timely response. Everyone at Mr. Rooter was friendly, professional, competent and went above and beyond. Our plumber, Phil, was extremely helpful and gave us tips we could use moving firwars. Not to mention, the cost was extremely reasonable.

Joseph Chis

Hillsborough, NJ

Had sewer water backup in toilet and tub. Received callback as promised and arrived early. The tech determined we needed the main line to be cleared. He quickly located the opening and had us cleared in minutes. Very happy with the service. I was not prepared for the fee but it was an emergency.

Christopher Cox

Little Silver Township

Plumber, Phil, came out on short notice on a Saturday night and fixed our issue quickly, professionally and courteously. I contacted a different, well known plumbing company right before Mr. Rooter. The receptionist was rude and they didn’t call me back to say they couldn’t make it until after Phil left! The Mr. Rooter receptionist was very nice and they called me back quickly. I’m glad they did.

Debbie Dimitrion

Colts Neck, NJ

I just wanted to say James did a great job at my house. Excellent service, professional and very nice. Thank you so much for helping me with my plumbing problem. Did wonderful job.

Rachel Turunen

Jackson Township

I was very happy that I went with Mr. Rooter’s. The service was very quick and up front. Jessie James was very helpful answering my questions and replacing my hot water heater. He was pleasurable to do business with. If another problem arises in my home, I will be using this company again.

William Holden

Brick Township, NJ

A thorough, professional, pleasant experience. I had a back-up in the 50 year-old pipes of my new home. I called Mr. Rooter to have them locate the blockage, snake the line, and then use their video snake to get a visual of the integrity of the pipes. I’m glad that I called and will use them again for future needs.

LarJ MarJ

Oakhurst, NJ

You get what you pay for. Edwin Robles of Central NJ educated me as a 1st time homebuyer on why and what he was repairing, prevention, PROMPT,(on a sunday at that!) clean, knowledgeable, super professional but DOWN TO EARTH and at a REASONABLE PRICE! Sewer pipes unclogged and main water line fixed. I was no longer crying once job was thoroughly executed. After all $#@* $tinks but somebody has to do it and I HIGHLY recommend him and this company for a job well done. THANK YOU VERY MUCH!!

Margie Rafferty-Criscione

Ocean Township

Absolutely lovely office staff! I always knew when the repair person was coming. Lorenzo our repair guy was awesome, I really don't think there is anything he can't do. He looks young, but don't let that fool you! So happy all the repairs are behind us. We really just did a one-stop shopping and decided to have everything we've put off fixed because it was such a tremendous experience!

Why Your Toilet Keeps Clogging

  • Older Model Low-Flow Toilet

If you have an old, low-flow toilet and it keeps clogging, it may be time to upgrade to a new and more efficient model. Older toilets do not have sufficient pressure to get rid of the waste efficiently. A toilet that lacks adequate pressure is prone to frequent clogging. Reach out to a professional plumbing service for toilet replacement and say goodbye to the endless issues that come with older toilets.

  • Older Pipework

If your plumbing is old and your toilet keeps clogging, the culprit could be deteriorating pipework leading to the sewer line or septic system. There’s a good chance debris has accumulated on the pipe walls or the pipes are corroded, thereby reducing the pipe’s inner diameter. While hydro-jetting can help in some cases, the strong water pressure can be risky for weak or damaged older pipes. The best solution for older pipework is to have a skilled plumber replace the pipes. Call in a plumbing service that specializes in pipe replacement to inspect the pipes connecting your toilet to the drainage system and give you professional recommendations.

  • Flushing Inappropriate Items Down The Toilet

Unfortunately, many homeowners have a habit of treating their toilets like trash cans. They flush all sorts of items down the toilet, including paper towels, wet wipes, cat litter, cotton swabs, and many more. Non-flushable items are the leading causes of clogged toilets. While it may seem convenient to flush things down your toilet, most of them are the reason why your toilet keeps clogging. The only three things you should flush are—pee, poo, and toilet paper. Anything else doesn’t belong in the toilet. If your toilet is clogged and DIY methods don’t seem to work, call a professional plumbing service specializing in clogged toilet repair to find the source of the problem and restore proper functioning. Regular drain cleaning can help prevent drain clogs.

  • Sewer Line Issues

You could be doing everything right, including being careful about what you flush, but sewer line problems are responsible for toilet clogging. The proper functioning of your sewer line largely depends on the condition of your sewer line. If your sewer line is blocked or damaged in some way, it will hinder the normal flow of wastewater from your entire house. In extreme cases, the wastewater will back up into your drains instead of flowing smoothly into the sewer system. If you suspect a blocked sewer line, call a licensed plumbing repair service to inspect the sewer line and suggest recommendations.

  • Hard Water Build-Up

Any plumber will tell you that hard water is not good for your plumbing. The minerals in hard water will build up on the pipe walls over time and lead to complete blockages. If you live in an area with hard water, you should not rule out hard water buildup as a possible culprit behind toilet clogging. The good news is that professional plumbers like those at Mr. Rooter Plumbing can get rid of hard water buildup through hydro-jetting. In cases where the buildup is severe, the best solution is to replace the pipes. Consult with a nearby plumbing repair service for a professional opinion.

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