Steps to Fix a Running Toilet – Here’s How to Fix It Fast

A constantly running toilet can be a homeowner’s nightmare, leading to skyrocketing water bills and wasted resources. The persistent sound of water running can be both annoying and alarming, indicating an underlying issue that needs immediate attention. Ignoring this problem can result in more significant damage and higher repair costs down the line. Fortunately, fixing a running toilet doesn’t have to be a daunting task. With a few simple steps and the right tools, you can quickly resolve the issue and restore your toilet to proper working order.

Why Toilet Keeps Running?

Faulty Flapper

The flapper is a rubber valve that controls the release of water from the tank to the bowl. Over time, the flapper can become warped or worn out, preventing it from creating a proper seal. When this happens, water continuously leaks into the bowl, causing the toilet to keep running. Replacing the flapper is a simple fix that can resolve this issue.

Misaligned or Broken Float

The float is a device that regulates the water level in the toilet tank. If the float is set too high, it can cause water to overflow into the overflow tube, leading to a running toilet. Similarly, a broken or misaligned float can fail to signal the fill valve to shut off, causing continuous water flow. Adjusting or replacing the float can help maintain the correct water level.

Worn Out Fill Valve

The fill valve controls the flow of water into the toilet tank. When the fill valve becomes worn out or damaged, it may not shut off completely, allowing water to keep running. This can result in constant refilling and overflowing of the tank. Replacing the fill valve can stop the toilet from running and improve its efficiency.

Leaky Flush Valve

The flush valve is responsible for releasing water from the tank into the bowl during a flush. If the flush valve is damaged or has a build-up of mineral deposits, it may not seal properly, causing a continuous flow of water. Cleaning or replacing the flush valve can prevent water waste and stop the toilet from running.

Issues with the Overflow Tube

The overflow tube prevents the toilet tank from overflowing by directing excess water into the bowl. If the tube is cracked or improperly positioned, it can cause water to constantly drain into the bowl, leading to a running toilet. Ensuring the overflow tube is intact and correctly aligned can resolve this issue and maintain proper toilet function.

Signs of Toilet Running

Continuous Hissing or Dripping Sound

One of the most common signs of a running toilet is a continuous hissing or dripping sound coming from the tank. This indicates that water is constantly flowing from the tank into the bowl or the overflow tube. If you hear this sound even when the toilet hasn’t been flushed recently, it’s a clear sign that there’s an issue that needs addressing.

Increased Water Bills

A running toilet can significantly impact your water usage, leading to unexpectedly high water bills. If you notice a sudden spike in your water bill without any changes in your household’s water consumption habits, a running toilet could be the culprit. Monitoring your water bills can help you identify and address the issue early.

Constantly Moving Water in the Bowl

If you observe water moving or rippling in the toilet bowl long after you’ve flushed, it indicates that water is continuously leaking into the bowl. This is a clear sign of a running toilet and usually points to issues with the flapper or flush valve. Fixing this problem can prevent water waste and restore normal toilet function.

Tank Refill Cycles

A properly functioning toilet tank should only refill after a flush. If you notice that the tank is refilling intermittently without being flushed, it means that water is leaking out and the tank needs to replenish itself repeatedly. This frequent refilling cycle is a strong indicator of a running toilet and suggests that components like the fill valve or flapper need attention.

Low Water Levels in the Tank

If the water level in your toilet tank is consistently lower than usual, it could be a sign of a running toilet. A malfunctioning fill valve or an improperly set float can cause the tank to stop filling before reaching the appropriate level, leading to continuous water flow and reduced flushing efficiency. Checking the water level in the tank can help diagnose the issue.

How to Fix a Running Toilet?

Here is a step by step guide for fixing a running toilet:

Step 1: Turn Off the Water

The first step to fixing a running toilet is to turn off the water supply. Locate the small knob on the wall near the base of the toilet, typically on the right side. Turn this knob clockwise until it stops, which will close the valve and stop water from entering the toilet tank. This is an essential step to prevent water flow while you make repairs. To turn the water back on after the repairs, simply turn the knob counterclockwise. Ensuring the water supply is off will help you work more efficiently and avoid any potential messes.

Step 2: Remove the Tank Lid

Carefully remove the ceramic lid from the top of the toilet tank. Since it’s fragile, place it gently on a safe surface, like a bath towel. Once removed, you’ll see the main components responsible for controlling the toilet’s water flow: the flush valve, the fill valve, and the fill tube.

The fill tube is a vertical, hollow plastic cylinder attached to the tank’s floor, with one end positioned above the water line. At the bottom of the tank, connected to the fill tube, is the flapper—a rubber or silicone seal that lifts when you flush. The fill tube’s purpose is to receive water from the fill valve to refill the tank after each flush and to act as an overflow pipe to prevent overflows.

As the water level in the tank decreases, the float in the fill valve lowers. This lowering opens the fill valve, allowing water to refill the tank. Once the float rises to a preset level, the water flow stops, ensuring the tank is adequately filled.

Step 3: Check the Flapper

A constantly running toilet is often caused by a faulty flapper. If the flapper isn’t sealing properly between uses, water will gradually drain from the tank, causing the toilet to run continuously as it tries to refill. To check if this is the issue, press your finger around the edges of the flapper. If the toilet stops running, the flapper likely has a poor seal.

Take note of how the flapper is connected to the bottom of the tank, and consider taking pictures for reference. Additionally, record the make and model of your toilet, as this information will be useful when you search for a matching replacement part.

Step 4: Examine the Fill Valve

Fill valves can also fail over time due to dirt, debris, or mineral scale deposits, causing them to open randomly and make the toilet run intermittently. A quick fix for this problem is to purge the valve. If you have a Fluidmaster cup-style fill valve, start by reaching into the tank with your right hand and lifting the float to rest on top of your hand. Then, with your left hand, grip the valve cap and press down on the cap arm, which juts out sideways. Twist the cap counterclockwise one-eighth of a turn and then pull up to release the cap.

Place a cup upside down on top of the valve and turn the water supply back on to full force. Let the water flow through the valve for 10 to 15 seconds to clear any debris, then shut off the water. Reattach the valve cap by reversing the earlier steps. This process may resolve your running toilet issue, as it did in my case.

Another common problem is if the float is set too high, causing the water level in the tank to sit above the fill tube and constantly drain into it. This can also lead to water spilling onto the bathroom floor if the toilet clogs. To adjust the water level, first remove the valve cap as described earlier. Then, detach the refill hose from its nipple on the valve shaft. Turn the valve shaft clockwise to lower the water level or counterclockwise to raise it.

Step 5: Swap in a Replacement Fill Valve if Necessary

Sometimes, no amount of cleaning or adjustments will fix a running toilet, especially if the fill valve has completely failed. In such cases, the only solution is to replace the fill valve with a new unit. While this process is more involved than the previous steps, it significantly enhances the toilet’s performance and longevity. Additionally, if your toilet is very old, a new fill valve can make its water consumption much more efficient, ultimately saving you money on water bills. Replacing the fill valve ensures your toilet functions correctly and reliably for years to come.

Taking Professional Help to Fix Running Toilet

If your attempts to fix a running toilet haven’t been successful, it might be time to seek professional help. Companies like USA Water Restoration specialize in plumbing repairs and can efficiently diagnose and resolve the issue. Professional plumbers have the expertise and tools to handle complex problems that DIY methods might miss.

Hiring a professional not only ensures a thorough fix but also prevents potential damage to your plumbing system. Moreover, professional services can save you time and stress, allowing you to focus on other important tasks. Trusting experts like USA Water Restoration guarantees a reliable and lasting solution to your running toilet problem.

FAQs

Why does my toilet keep running even after I’ve replaced the flapper?

A running toilet can persist even after replacing the flapper if there are additional issues, such as a misaligned float, a faulty fill valve, or debris in the valve. It’s important to inspect and possibly replace other components to ensure a complete fix.

How can I tell if the fill valve needs to be replaced?

If your toilet’s tank is not refilling properly, or if the water continuously runs without stopping, the fill valve might be faulty. Signs of a failing fill valve include irregular water flow, noise, or the tank taking too long to fill. Similarly, pouring grease or oil down the drain can cause significant plumbing issues. These substances harden and block sewage pipes, leading to costly repairs and potential water damage. Proper maintenance and addressing these issues promptly can help keep your plumbing system in top condition.

Can I fix a running toilet myself, or do I need a professional?

Many running toilet issues can be fixed with DIY methods, such as adjusting the float or replacing the flapper. However, if these fixes don’t work or if the problem is more complex, seeking professional help is advisable to prevent further damage and ensure a proper repair.

How does a professional plumber fix a running toilet?

A professional plumber will thoroughly inspect your toilet, identify the root cause of the issue, and replace or repair the necessary components. They have the expertise and tools to handle complex repairs efficiently, ensuring a long-term solution. Additionally, understanding the difference between drain clearing and drain cleaning is crucial for maintaining your plumbing system. Drain clearing addresses immediate blockages, while drain cleaning involves a more comprehensive process to prevent future clogs and ensure optimal drainage. Trusting a professional for both toilet repairs and drain maintenance can help keep your home’s plumbing system in top condition.

How much does it cost to fix a running toilet?

The cost to fix a running toilet varies depending on the severity of the issue and whether you do it yourself or hire a professional. DIY repairs might only cost a few dollars for replacement parts, while professional services can range from $50 to $200, depending on the complexity of the repair.

Conclusion

A running toilet is not just an annoyance but also a significant source of water waste and increased utility bills. Addressing the problem promptly with DIY methods like adjusting the float, cleaning the fill valve, or replacing the flapper can often resolve the issue.

However, if these solutions don’t work, seeking professional help from experts like USA Water Restoration is a wise choice. Professional plumbers can efficiently diagnose and fix complex issues, ensuring your toilet operates smoothly and efficiently. Taking action to repair a running toilet not only saves water and money but also prevents potential damage to your plumbing system.

By maintaining your toilet properly, you ensure a longer lifespan and better performance for your bathroom fixtures.

Scroll to Top