Toilet Won’t Stop Running? Easy Fixes and Solutions
Have you been hearing the constant sound of running water from your toilet? It’s not just an annoying noise – it can also lead to wasted water and higher bills. Fortunately, there are easy fixes and solutions to this problem that anyone can try.
In this article, we’ll guide you through troubleshooting steps to stop your toilet from running constantly. Let’s get started!

Key Takeaways:
- A running toilet can lead to wasted water and higher bills.
- There are easy fixes and solutions to this problem.
- Follow our troubleshooting steps to stop your toilet from running constantly.
Understanding a Running Toilet
A running toilet is one that continues to flow water into the bowl, even after a flush. This can be caused by a variety of issues, ranging from a loose flapper valve to a faulty fill valve. In order to fix a running toilet, it’s important to understand what may be causing the problem.
One common cause of a running toilet is a faulty flapper valve. The flapper valve is a rubber seal that sits at the bottom of the tank and prevents water from flowing into the bowl. If the flapper valve is worn or damaged, it can allow water to leak into the bowl, causing the toilet to run constantly.
Another potential cause of a running toilet is a defective fill valve. The fill valve is responsible for refilling the tank after a flush, and if it’s not working properly, it can cause the toilet to continue running. This can be caused by a variety of issues, such as a clog in the valve or a malfunctioning float.
Understanding the underlying cause of a running toilet is critical to fixing the problem. In the next sections, we will explore some of the easy fixes and solutions to address a toilet that won’t stop running.

Checking the Flapper Valve
If your toilet won’t stop running, the flapper valve may be the culprit. Here’s how to check:
- Remove the toilet tank lid and locate the flapper valve at the bottom of the tank.
- Flush the toilet and observe the flapper valve as the tank empties. If it doesn’t close fully or quickly lift up when the water level is low, it may need to be cleaned or replaced.
- Turn off the water supply to the toilet and flush it to remove any remaining water in the tank.
- Detach the flapper valve from its chain or pin and inspect it for any signs of wear or damage. If the flapper valve appears to be in good condition, try cleaning it with water and a soft brush to remove any debris or mineral buildup.
- If the flapper valve is damaged or worn out, replace it with a new one that matches the size and shape of the old valve.
- Reattach the flapper valve to its chain or pin and turn the water supply back on.
- Test the toilet to ensure the flapper valve is properly sealing and preventing water from continuously running into the bowl.
Remember to ensure a tight seal when reattaching the flapper valve. A properly functioning flapper valve can save thousands of gallons of water each year!

Adjusting the Chain or Float
If the flapper valve is working correctly, but your toilet still won’t stop running, the issue may be with the chain or the float. These components can become misaligned over time and may require adjustment to ensure proper function.
To adjust the chain, locate it on the flapper valve and make sure it isn’t too loose or too tight. A chain that is too loose can prevent the flapper valve from sealing tightly, while a chain that is too tight can prevent the flapper valve from opening fully. Adjust the chain as necessary to ensure a proper seal and full opening of the valve.
If the chain is not the problem, check the float. The float is responsible for regulating the water level in the tank and can be adjusted if it is not properly aligned. To adjust the float, locate the adjustment screw on the fill valve and turn it clockwise or counterclockwise to raise or lower the float. Make sure it is set to the proper water level for optimal performance.

Note: If you are not comfortable making these adjustments yourself, it may be best to seek the assistance of a professional plumber to avoid causing further damage to your toilet.
Cleaning or Replacing the Flapper Valve
If checking the flapper valve didn’t stop your toilet from running, it’s time to move on to cleaning or replacing it. Over time, the flapper valve can wear out or become damaged, causing water to continuously leak into the bowl. This can also lead to a toilet that won’t stop filling. Here are the steps to follow:
- Turn off the water supply to the toilet by shutting off the valve behind the toilet or at the main water shut-off valve.
- Flush the toilet to drain the water from the tank.
- Remove the flapper valve from its seat at the bottom of the tank. The flapper valve is typically connected to the flush handle by a chain.
- Inspect the flapper valve for signs of damage, such as cracks or tears. If the valve is damaged, replace it with a new one.
- If the valve is not damaged, clean it thoroughly with a sponge or cloth to remove any debris or mineral buildup that could prevent it from sealing tightly.
- Reinstall the flapper valve, making sure it fits snugly in its seat.
- Turn the water supply back on and allow the tank to fill up.
- Flush the toilet and observe if the flapper valve seals tightly and the water stops running after the tank is refilled.
Remember, a tightly sealed flapper valve is crucial to prevent water from continuously leaking into the bowl. This not only wastes water but can also lead to higher water bills.

Fixing a Faulty Fill Valve
If the flapper valve is not the culprit, check the fill valve. A defective fill valve can also cause a running toilet. Follow these steps to troubleshoot your fill valve:
- First, locate the fill valve. It is the tall, narrow tube with a float attached to it.
- Flush the toilet and wait for the tank to refill.
- As the tank refills with water, lift the float to stop the flow and listen for any water running into the overflow tube.
- If you hear water running, adjust the screw on top of the fill valve to lower the water level.
- If adjusting the screw does not work, shut off the water supply to the toilet and unscrew the fill valve cap.
- Clean any debris from the valve and replace the cap.
- Turn the water back on and let the tank refill. Check to see if the problem is fixed.
If the above steps do not solve the issue, it may be necessary to replace the entire fill valve. This requires a bit more effort, but many homeowners are able to tackle this task themselves. Consult your toilet’s manual or a home improvement store for assistance.

Checking the Water Level
One possible cause of a running toilet is an incorrect water level in the tank. To check the water level, remove the tank lid and look inside. The water level should be about one inch below the top of the overflow tube.
If the water level is too high, adjust it by turning the screw on top of the fill valve. Turn the screw clockwise to lower the water level and counterclockwise to raise it. Make small adjustments (one quarter turn at a time) and check the water level after each adjustment until it is at the recommended level.
If the water level is too low, adjust it by bending the float arm slightly upward. This increases the buoyancy of the float and raises the water level. Make small adjustments and check the water level until it is at the recommended level.

It’s important to maintain the correct water level to prevent continuous running, as an incorrect water level can cause the fill valve to malfunction and the toilet to run constantly.
Addressing Other Possible Causes
If you’ve checked the flapper valve and fill valve and still have a running toilet, there may be other underlying causes. Here are some other potential issues to consider:
Problem | Solution |
---|---|
Defective Overflow Tube | If the overflow tube is damaged or worn out, it may need to be replaced. Check for any signs of water trickling into the overflow tube. If you notice this, consider replacing the tube. |
Worn-out Flush Valve Seal | If the flush valve seal is worn-out, it can cause water leakage. Make sure to shut off the water valve and drain the tank before replacing the seal. |

By addressing these less common causes, you can tackle a running toilet and save water in the process.
DIY Tips for Fixing a Running Toilet
If you’re experiencing a running toilet and want to try some DIY solutions before calling in a professional, there are a few tips you can try to fix the problem quickly and easily. Here are some things to keep in mind:
- Check the flapper valve: As we discussed earlier, the flapper valve is a common culprit of a running toilet. Check to see if it’s sealing properly or if there are any obstructions preventing it from doing so.
- Adjust the chain or float: If the chain or float is loose or misaligned, it can cause the toilet to keep running. Make sure they are properly aligned and allow for efficient operation of the toilet.
- Clean or replace the flapper valve: If the issue persists, it might be time to clean or replace the flapper valve entirely. Follow the steps we outlined in Section 5 to get it done properly.
- Fix a faulty fill valve: If a faulty fill valve is causing the toilet to run, it might be time to replace it completely. Check out Section 6 to get instructions on how to identify and fix a defective fill valve.
- Check the water level: If the water level in the toilet tank is too high or too low, it can cause the toilet to keep running. Ensure the water level is set to the recommended level and make adjustments as necessary.
- Address other possible causes: If you’ve tried all the above steps and the toilet is still running, check for other possible culprits like a defective overflow tube or a worn-out flush valve seal. Section 8 will walk you through these less common causes and how to fix them.
- Use temporary fixes: While it’s always best to address the root cause of the issue, you can use some temporary fixes like jiggling the handle or turning off the water supply to the toilet until you can get a permanent solution.
Remember, these DIY tips are just a starting point. If your toilet continues to run or you’re not comfortable making the repairs yourself, it’s always best to call in a professional plumber for assistance.

When to Call a Professional
If the troubleshooting steps mentioned in this article do not resolve the issue of a running toilet, it may be time to call a professional plumber. While DIY solutions can be effective, persistent problems may require specialized expertise. Plumbing professionals have the necessary tools and knowledge to identify and fix complex problems that may be causing the toilet to keep running.
If you experience any of the following issues, it may be time to seek expert assistance:
- The toilet continues to run even after trying various DIY solutions.
- You notice a significant increase in your water bill despite your efforts to save water.
- You are not comfortable working with the plumbing fixtures or are unsure of the necessary steps to take.
Remember, engaging the services of a professional plumber can help you save time and money in the long run. It can also prevent further damage to your plumbing system and ensure a long-term solution to a running toilet.

Preventing Toilet Running in the Future
Prevention is always better than cure, and this is no exception when it comes to a running toilet. Taking proactive measures can save you money and conserve water in the long run. Here are some tips to prevent toilet running in the future:
- Check for Leaks Regularly: To avoid running toilets, it is essential to check for leaks frequently. A simple way to do this is to add a few drops of food coloring to the toilet tank and wait for a few minutes. If the color seeps into the bowl, it means there is a leak that needs to be fixed immediately.
- Ensure Proper Toilet Parts Functionality: Check all the toilet parts, including the flapper valve, fill valve, and overflow tube, to ensure they are functioning correctly. Replace any defective parts promptly to avoid running toilets.
- Do Not Use the Toilet as a Trash Can: Avoid flushing non-degradable items down the toilet, such as paper towels, feminine hygiene products, and wet wipes. They can cause clogs and damage the toilet’s function, leading to running toilets.
- Invest in Water-Saving Toilets: Consider investing in water-saving toilets that use less water per flush. They can save you a considerable amount of money on water bills and reduce water waste.
By following these simple tips, you can prevent toilet running and reduce water bills significantly. Remember always to be proactive and avoid ignoring any signs of toilet problems to avoid emergencies and costly repairs.

Conclusion
Dealing with a running toilet can be frustrating, but it’s a problem that can easily be fixed with the right knowledge and tools. We hope this article has been helpful in guiding you through the troubleshooting process and providing tips on how to fix a toilet that won’t stop running.
Remember, a running toilet can lead to wastage of water and increased water bills, making it important to address the issue promptly. Whether you need to check the flapper valve, adjust the chain or float, clean or replace the flapper valve, or fix a faulty fill valve, the solutions provided in this article should help resolve the problem.
Take Action Now!
Don’t wait any longer to address a running toilet. Using the DIY tips provided in this article, you can fix the problem quickly and easily. However, if all else fails, don’t hesitate to call a professional plumber for assistance. Taking preventive measures such as regular maintenance can also help avoid future instances of a running toilet, saving you money in the long run.
Thank you for reading, and we hope this article has been informative and helpful to you!
FAQ
Q: How can I fix a toilet that won’t stop running?
A: There are several easy fixes and solutions you can try to stop a running toilet.
Q: Why does a toilet keep running constantly?
A: A toilet may keep running constantly due to issues such as a faulty flapper valve or a defective fill valve.
Q: How do I check the flapper valve?
A: To check the flapper valve, follow these steps: [detailed instructions]. It’s important to ensure a tightly sealed flapper valve to prevent water leakage.
Q: How do I adjust the chain or float?
A: To adjust the chain or float, follow these instructions: [detailed instructions]. Proper alignment is crucial for efficient toilet operation.
Q: Should I clean or replace the flapper valve?
A: If the flapper valve is damaged or worn out, you can clean it following these steps: [detailed instructions]. In some cases, it may be necessary to replace the flapper valve entirely for optimal performance.
Q: How can I fix a faulty fill valve?
A: To troubleshoot and fix a faulty fill valve, follow these steps: [detailed instructions]. A properly functioning fill valve is essential for water efficiency.
Q: How do I check the water level?
A: To check the water level in the toilet tank, follow these instructions: [detailed instructions]. Maintaining the correct water level is crucial to prevent continuous running.
Q: What are other possible causes of a running toilet?
A: Other potential causes of a running toilet include a defective overflow tube or a worn-out flush valve seal. You can identify and resolve these less common causes using these steps: [detailed instructions].
Q: What are some DIY tips for fixing a running toilet?
A: Here are some practical DIY tips for fixing a running toilet: [tips]. These quick fixes can be used until professional help is available.
Q: When should I call a professional plumber?
A: It may be necessary to call a professional plumber if DIY solutions are not sufficient or if the problem persists. Seeking expert help will prevent further damage and ensure a long-term solution.
Q: How can I prevent a running toilet in the future?
A: To prevent future instances of a running toilet, practice regular maintenance such as checking for leaks and ensuring proper functioning of toilet parts. Taking proactive measures will help conserve water and avoid unnecessary expenses.