How to Stop an Overflowing Toilet

James M.
How to Stop an Overflowing Toilet

This is what nightmares are made of: you walk into your bathroom to find a new water feature flowing–one that you didn’t install. Your toilet bowl is overflowing! Is your first instinct to flush the toilet again? (Definitely don’t do that!) Would you simply call out for anyone else in your household to solve the issue? Do you know what to do when the panic of a wet floor and running water set in? If you’re unsure about those questions, here are simple steps to stop your toilet from overflowing and some information about what may have caused your issue. 

Stop more water from entering the bowl.

Water enters your toilet bowl from two places: the primary source, covered by a flapper or stopper, and the fill valve. You can find both of these places in the tank of your toilet, so step one is to remove the lid of your toilet tank carefully and set it down in a safe place. Once you have done that, you can move on to the next steps.  

  • Close the flapper valve inside the toilet tank.

Locate the flapper valve. This is a rubber piece in the bottom center of your tank attached to a chain. When you push it down, it should stop more water from flowing into the bowl. Since this is the primary water source entering the bowl, this step should take care of most of the issue. 

  • Disconnect the fill tube or lift up the float.

Though you have already taken care of the main water supply, the fill valve is a secondary source you’ll need to stop. When you flush your tank, the water from the supply line fills the tank and the bowl simultaneously. This is done by utilizing a fill tube that sends water down the overflow valve. Water continues flowing until the float in your tank reaches a certain level. Your float may look like a ball or a cup, depending on your system type. The float determines how much water should enter the tank. When the float reaches the maximum height, it signals that the tank is full and causes the water supply to shut off.

One way to stop water from flowing into the bowl is to simply disconnect the fill tube that sends water down the overflow valve. You can pull this line out gently and allow it to fill the tank instead of down the overflow valve. 

Another way to stop water from flowing into the bowl is to use something to prop up the float in the tank. You can “trick” your system into thinking the toilet is full this way. You can use anything small enough to sneak under the rod to accomplish this. 

  • Turn off the water supply to the toilet. 

Another way to ensure no more water enters the bowl is to turn off the water supply. A tube connected to the wall is located at the back of the toilet. On that tube, there should be a silver football-shaped knob. This knob turns the water supply to your toilet on and off. Turn the knob counterclockwise to stop any additional water from flowing to the toilet. 

Whew! Now that the water has stopped pouring, what now? 

Once your toilet is no longer overflowing, grab a mop and clean up any excess water in your bathroom. Do not attempt to flush the toilet again until you have fixed the problem. 

The next step is removing the clog causing the toilet or drain to back up. Try to use a plunger and see if you can remove any blockages from the drain. Remember: create an airtight seal when using the plunger. Plunge up and down for 10 to 20 seconds each time. If you are having trouble getting the clog out on your own and live in the Birmingham, AL, area, give us a call at All City Plumbers! We will send a professional to your home to solve the issue quickly and cleanly. We offer 24-hour emergency plumbing service, and our trained and experienced plumbing team guarantees to get the job done.

Hopefully, this is a rare issue with your bathroom. However, if your toilet is repeatedly overflowing, check out our guide to what may be happening here

What caused my toilet to overflow?

To answer this question confidently, we suggest hiring a plumbing professional to investigate and assist with your toilet needs. However, the most common cause of an overflowing toilet is drain and pipe clogging. Drains and pipes can be clogged when non-flushable items are flushed down the toilet. Non-flushable items can include sanitary napkins, diapers, paper towels, wipes, and many other things. A toilet can also be blocked if too much toilet paper is flushed at one time, particularly in cases where the toilet has a septic tank. These blockages can often be solved with a plunger but in some cases, may require the help of a professional plumbing service. 

Overflowing toilets may also be caused by a toilet malfunction. If your float has malfunctioned, that could cause the water to continue flowing into the bowl and causing an overflow. These malfunctions, specifically ones with the tank flapper or float, can typically be fixed by going to your local hardware store and replacing the parts.

Sometimes, the reason for your overflowing toilet can be more sinister, like tree roots growing in your sewer line. These situations are easier to handle when you enlist the help of a professional plumbing service. All City Plumbers in Birmingham, AL, offers emergency, commercial, and residential plumbing services. Get in touch with us to learn more about our services.

by Youmna Rehman 1 May 2025
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Drains clog because of everyday use—but not always in ways we notice right away. In the kitchen, grease, oil, and food scraps stick to pipe walls, harden, and build up over time. In bathrooms, hair, soap scum, and toothpaste form stubborn tangles that slow water flow. Laundry drains face detergent residue and lint. Even so-called “flushable” wipes can wreak havoc in toilet pipes. The challenge is that most of this buildup is gradual. You may not notice a problem until the water starts pooling or smells start rising—and by then, a full-blown clog could be just around the corner. Step-by-Step: How to Maintain Your Drains at Home Step 1: Flush Your Drains Weekly with Hot Water One of the easiest habits you can adopt is flushing your drains with hot water once a week. This helps melt away minor grease deposits and dislodge small bits of debris before they can build up. Simply boil a kettle of water and pour it slowly down your drain. For kitchen sinks, you can follow it with a squirt of dish soap to cut through any residual grease. Step 2: Use a DIY Baking Soda and Vinegar Cleanse This old-school method is a favorite for a reason—it works. Once a month, pour half a cup of baking soda down the drain, followed by one cup of vinegar. Let it sit and fizz for 15 to 30 minutes, then flush with boiling water. This mixture helps break down organic material and neutralize odors without using harsh chemicals. It’s especially useful for bathroom sinks and shower drains where buildup tends to be slow but persistent. Step 3: Install Drain Strainers or Hair Catchers Mechanical prevention is often the most effective. Installing strainers or mesh covers over your drains can dramatically reduce the amount of debris entering your pipes. In kitchens, they stop food scraps. In bathrooms, they catch hair. They’re inexpensive, easy to clean, and one of the smartest tools in your DIY maintenance kit. Step 4: Clean the Stoppers and Covers Drain stoppers in bathroom sinks and tubs collect grime over time. Every couple of weeks, remove and clean them thoroughly with hot water, an old toothbrush, and soap. This prevents buildup at the entry point of your drain and keeps water flowing smoothly. Step 5: Use Enzyme Cleaners Monthly Enzyme-based drain cleaners are a safe, eco-friendly way to maintain your plumbing. These cleaners use natural bacteria and enzymes to digest organic material in your pipes. Unlike chemical alternatives, they won’t corrode your pipes or kill beneficial bacteria in septic systems. Regular monthly use keeps your drains clean and odor-free. The Risks of Ignoring Drain Maintenance Many people wait until there’s a problem to think about their drains. But ignoring routine maintenance carries hidden risks. Minor clogs can turn into major backups, leading to overflows, water damage, and costly plumber visits. If you’re dealing with old pipes, recurring blockages can weaken their integrity and eventually cause leaks or breaks. Additionally, standing water from partial clogs creates a breeding ground for mold and bacteria, which can affect your indoor air quality. Odors, slow drainage, and constant plunging become part of your everyday routine—and that’s not a habit anyone wants. By contrast, maintaining your drains regularly prevents emergencies and keeps your home healthy and hygienic. Challenges You Might Face With DIY Drain Maintenance DIY drain care is effective, but it comes with a few challenges. First, it requires consistency. One-time fixes won’t cut it. Just like you wouldn’t brush your teeth once and forget it, drain maintenance has to be a habit. Second, you may encounter deeper problems that simple DIY methods can't solve—like tree root intrusion, damaged pipes, or long-standing grease clogs. In these cases, professional tools like snaking or hydro jetting may be necessary. Finally, not all products work for every type of drain. Enzyme cleaners may be perfect for organic buildup but won’t help with mineral deposits or foreign objects. You’ll need to understand your system and use the right tools at the right time. Expert Advice: What Plumbers Recommend for Homeowners Most plumbers agree on one thing: Prevention is cheaper and easier than repairs. They often recommend homeowners adopt a monthly maintenance routine and take steps to avoid the most common clogging culprits. Grease is one of the worst offenders. Never pour it down the drain, even if you flush it with hot water. Instead, collect it in a jar and dispose of it in the trash. Similarly, hair may seem harmless, but it binds with soap and forms heavy clumps that are hard to dislodge. Experts also recommend keeping a plunger and drain snake handy for minor clogs. These manual tools are your first line of defense and often solve problems without the need for chemicals or a professional visit. Preventive Habits That Make All the Difference Incorporating small habits into your routine can have a big impact. Run hot water for a few seconds after using the sink to help push residue through. Don’t treat your garbage disposal like a trash can—avoid fibrous foods like celery, eggshells, and coffee grounds. Always dispose of hygiene products in the trash, no matter what the label says. And when in doubt, install a catch-all filter. By combining these habits with monthly enzyme treatments and occasional deep cleaning, you can keep your entire drain system running like new. Conclusion: Stay Ahead of Clogs with Simple, Smart Maintenance Taking care of your drains doesn’t require fancy tools or a plumber on speed dial. It’s about adopting a mindset of prevention and following through with simple, consistent actions. From flushing with hot water to monthly enzyme cleanings and mindful kitchen habits, DIY drain maintenance is both achievable and impactful. By investing just a little time each week, you can save yourself the frustration, cost, and mess of clogged pipes later on. So start today—your future self (and your plumbing) will thank you
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