If you’ve ever turned off your bathtub faucet only to hear water still gushing out, you’re not alone. A constantly running bathtub is not only annoying but can drive up your water bill. If you’re short on time, here’s a quick answer to your question: A bathtub faucet may keep running water after being turned off due to issues like worn washers, faulty cartridges, calcified valves, cross-threaded stem nuts, and more.

Replacing washers and cartridges or descaling valves can often resolve this frustrating issue.

In this comprehensive guide, we’ll dive into all the possible reasons your bathtub won’t turn off completely and provide step-by-step instructions for diagnosing and fixing the problem yourself.

Common Causes of Bathtub Faucets That Won’t Turn Off

Worn Out Rubber Washers

One of the most common causes of bathtub faucets that won’t turn off is worn out rubber washers. Over time, the rubber washers inside the faucet handle can deteriorate, causing water to continue flowing even when the faucet is turned off. This can lead to water waste and increased water bills.

Replacing the worn out rubber washers is a relatively simple fix that can be done by following the manufacturer’s instructions or seeking professional help.

Damaged or Faulty Cartridges

Another potential cause of a bathtub faucet that won’t turn off is a damaged or faulty cartridge. The cartridge is responsible for controlling the flow of water in the faucet. If it becomes damaged or worn out, it may not be able to properly shut off the water flow when the faucet is turned off.

In this case, replacing the cartridge is necessary to fix the issue. It is recommended to consult the manufacturer’s instructions or seek professional assistance for cartridge replacement.

Calcified or Corroded Valves

Calcification or corrosion of the valves can also cause bathtub faucets to not turn off. Over time, mineral deposits or rust can build up on the valves, preventing them from fully closing. This can result in water continuously flowing from the faucet, even when the handle is in the off position.

Cleaning or replacing the calcified or corroded valves can help resolve this issue. It’s important to follow proper cleaning techniques or consult a professional for valve replacement if necessary.

Cross-Threaded Stem Nuts

If the stem nuts inside the faucet handle are cross-threaded, it can hinder the proper functioning of the faucet, causing water to keep running. Cross-threading occurs when the nuts are not properly aligned during installation or maintenance.

To fix this issue, the stem nuts need to be carefully realigned and tightened. It is advisable to refer to the manufacturer’s instructions or seek professional assistance for this repair.

Loose Retainer Nuts

Loose retainer nuts can also be a reason why a bathtub faucet won’t turn off. The retainer nuts hold various components of the faucet together, and if they are loose, it can lead to water leakage and difficulties in shutting off the faucet. Tightening the retainer nuts can usually solve this problem.

However, it’s important to exercise caution and not overtighten them, as it can cause damage to the faucet.

Cracked or Damaged Spout

A cracked or damaged spout can result in a faucet that won’t turn off. If the spout is compromised, it can prevent the internal mechanisms from properly sealing, causing water to continuously flow. In this case, replacing the spout is necessary to fix the issue.

It is recommended to refer to the manufacturer’s instructions or consult a professional plumber for spout replacement.

Faulty Diverter Mechanism

The diverter mechanism in a bathtub faucet is responsible for redirecting water flow to the showerhead or bathtub spout. If the diverter mechanism is faulty, it can cause water to continue flowing even when the faucet handle is turned off.

Repairing or replacing the diverter mechanism can help resolve this issue. It’s important to follow proper procedures or seek professional assistance for this repair.

How to Diagnose the Exact Problem

Inspect for Dripping Water

When you notice that your bathtub faucet is turned off but water is still running, it’s important to diagnose the exact problem before attempting any fixes. Start by inspecting for any signs of dripping water. Even a small leak can cause water to continue flowing after the faucet is turned off.

Check the spout, handles, and any visible pipes for any signs of water leakage.

Remove the Faucet Handle

If you don’t find any visible signs of dripping water, the next step is to remove the faucet handle. Turn off the water supply to the bathtub and use a screwdriver or Allen wrench to remove the handle. This will give you access to the inner workings of the faucet and help you identify the issue.

Check Washers and Cartridges

Once the handle is removed, inspect the washers and cartridges. These components are responsible for controlling the flow of water and can wear out over time. Look for any signs of damage or excessive wear. If you notice any issues, they may need to be replaced.

Test the Valves

After inspecting the washers and cartridges, it’s important to test the valves. Turn the water supply back on and slowly turn the valves on and off. Pay close attention to any changes in water flow or any unusual noises.

This will help you determine if the valves are functioning properly or if they need to be adjusted or replaced.

Examine Stem Nuts and Retainer Nuts

If the valves seem to be in working order, the next step is to examine the stem nuts and retainer nuts. These nuts hold the faucet components in place and can sometimes become loose or worn out. Tighten any loose nuts and inspect them for any signs of damage. If necessary, replace them with new ones.

Assess the Spout

Another possible cause of a bathtub faucet still running when turned off is a faulty spout. Inspect the spout for any signs of damage or wear. If the issue is with the spout, it may need to be replaced to resolve the problem.

Test the Diverter

Lastly, if your bathtub has a diverter, it’s important to test it as well. A malfunctioning diverter can cause water to continue flowing even when the faucet is turned off. Follow the manufacturer’s instructions to test and troubleshoot the diverter. If necessary, replace it to fix the issue.

By following these steps and thoroughly diagnosing the problem, you can identify the exact issue causing your bathtub faucet to still run when turned off. Remember, if you’re unsure or uncomfortable with any of the steps, it’s always best to consult a professional plumber to ensure a proper fix.

Fixing a Bathtub Faucet That Won’t Turn Off Completely

If you’ve ever experienced the frustration of turning off your bathtub faucet only to find that the water is still running, you’re not alone. This common plumbing issue can be caused by a variety of factors, but fortunately, there are several solutions available to fix the problem.

Here are some methods you can try to get your bathtub faucet working properly again.

Replacing the Washers

One of the most common reasons why a bathtub faucet won’t turn off completely is worn-out washers. Over time, the rubber washers inside the faucet can deteriorate, causing leaks and preventing the faucet from shutting off completely.

Replacing these washers is a relatively simple fix that can be done with basic tools. Make sure to turn off the water supply before attempting this repair.

Swapping Out the Cartridge

In some cases, the issue may lie with the cartridge inside the faucet. The cartridge controls the flow of water and can become worn or damaged over time. If you suspect that the cartridge is causing the problem, you may need to replace it.

Consult the manufacturer’s instructions or a plumbing professional for guidance on how to remove and replace the cartridge properly.

Cleaning or Replacing Valves

Another possible culprit for a bathtub faucet that won’t turn off completely is a faulty valve. Sediment and debris can build up inside the valve, preventing it from closing fully. In this case, you can try cleaning the valve to remove any obstructions.

If cleaning doesn’t solve the problem, you may need to replace the valve altogether.

Tightening Stem Nuts

If you have a compression faucet, which is typically found in older homes, the stem nuts may have become loose over time. These nuts secure the faucet’s handles to the valve stem. If they are loose, the faucet may not shut off completely.

Tightening the stem nuts using a wrench or pliers can often resolve this issue.

Tightening Retainer Nuts

For a single-handle faucet, the retainer nut located under the handle may be loose. This can cause the faucet to leak or not shut off completely. Simply tightening the retainer nut can often fix the problem. Be sure to turn off the water supply before attempting this repair.

Replacing the Spout

In some cases, the problem may be with the spout itself. If the spout is damaged or worn, it may not create a proper seal, causing water to continue flowing even when the faucet is turned off. Replacing the spout with a new one can often solve this issue.

Repairing or Replacing Diverter

If your bathtub has a diverter, which is used to redirect water from the faucet to the showerhead, a malfunctioning diverter can cause water to continue flowing from the faucet even when it is turned off. Repairing or replacing the diverter can often fix this problem.

Consult a plumbing professional for assistance with this repair.

Remember, if you’re not comfortable with DIY plumbing repairs or if the issue persists after attempting the suggested fixes, it’s always best to consult a professional plumber. They have the expertise and tools necessary to diagnose and repair complex plumbing issues.

Preventative Maintenance for Bathtub Faucets

Proper maintenance of your bathtub faucet is essential to ensure its smooth operation and prevent any issues such as water still running even after the faucet has been turned off. By following these preventative maintenance tips, you can extend the lifespan of your faucet and avoid costly repairs.

Periodically Replace Rubber Washers

Over time, the rubber washers inside your bathtub faucet can wear out and cause leaks. To prevent this, it is important to periodically replace these washers. It is a simple task that can be done by turning off the water supply to the faucet, removing the handle, and replacing the old washer with a new one.

This will help maintain a tight seal and prevent water from continuously running.

Upgrade Old Cartridges

If your bathtub faucet has an older cartridge, it may be prone to malfunctioning and causing water to still run even when the faucet is turned off. Upgrading to a new, high-quality cartridge can help prevent this issue.

The new cartridge will provide better control over the water flow and ensure that the faucet shuts off completely when not in use.

Descale Valves Regularly

Mineral deposits can accumulate inside the valves of your bathtub faucet, causing them to become stuck and preventing the water from fully shutting off. To prevent this, it is recommended to descale the valves regularly.

This can be done by using a descaling solution or a mixture of vinegar and water. Simply soak the valves in the solution for a few hours, then scrub away any remaining deposits with a soft brush. Regular descaling will help maintain the proper functioning of the valves and prevent water from continuously running.

Check Nuts and Bolts for Tightness

Loose nuts and bolts can cause your bathtub faucet to leak or have water running even when it is turned off. To prevent this, it is important to periodically check the nuts and bolts that hold the faucet in place and ensure they are tight.

Use a wrench to tighten any loose fittings and make sure everything is secure. This will help maintain a proper seal and prevent any water from escaping when the faucet is not in use.

Inspect Spout and Diverter Mechanism

The spout and diverter mechanism of your bathtub faucet can also contribute to water still running even when the faucet is turned off. Over time, these components can become worn out or damaged, leading to leaks or improper water flow.

Regularly inspecting these parts and replacing them if necessary can help prevent any issues and ensure that the faucet operates smoothly without any water leakage.

By following these preventative maintenance tips, you can keep your bathtub faucet in great condition and avoid the frustration of water still running even after the faucet has been turned off. Remember, regular maintenance is key to preventing costly repairs down the line.

When to Call a Plumber for Bathtub Faucet Repairs

While some minor faucet issues can be fixed with a little DIY know-how, there are certain situations where it’s best to call a professional plumber. Here are some instances when you should consider reaching out for expert help:

Complete Faucet Replacement Needed

If your bathtub faucet is old and worn-out, a complete replacement may be necessary. This is especially true if the faucet is leaking or if the water flow is weak. A plumber can help you choose a new faucet and ensure it is installed correctly to prevent any future issues.

Pipes or Valves Under the Tub Need Repair

Sometimes, the problem with your bathtub faucet may not lie solely in the faucet itself. It could be due to issues with the pipes or valves located beneath the tub. These components are often difficult to access and require specialized knowledge and tools to repair.

A plumber can inspect the area and determine the best course of action to fix the problem.

Replacing Cartridge Requires Special Tools

The cartridge is an essential part of the faucet that controls the water flow and temperature. If the cartridge is faulty and needs to be replaced, it can be a complex task. Plumbers have the necessary tools and expertise to safely remove the old cartridge and install a new one without causing any further damage to the faucet.

Bathtub Plumbing is Old or Deteriorated

If your bathtub plumbing system is old or deteriorated, it may require more than just a simple faucet repair. In some cases, the entire plumbing system may need to be updated or replaced. A qualified plumber can assess the condition of your plumbing and recommend the best solution to ensure proper functioning and prevent future issues.

Problem Persists After DIY Troubleshooting

If you’ve attempted to troubleshoot the faucet issue on your own and the problem persists, it’s time to call in a professional. Continuing to tinker with the faucet without the necessary knowledge and experience can potentially make the problem worse.

A plumber can accurately diagnose the issue and provide the appropriate repairs to get your bathtub faucet working properly again.

Remember, while some minor faucet repairs can be done by yourself, it’s crucial to know your limitations. Calling a plumber for bathtub faucet repairs ensures that the job is done correctly and prevents further damage or costly repairs down the line.

Conclusion

While an endlessly running bathtub faucet can be a headache, in most cases the problem can be readily identified and fixed yourself. With basic tools and a little DIY plumbing knowledge, you can get your tub faucet turning on and shutting off properly again.

Performing preventative maintenance like replacing washers and descaling valves periodically can also help avoid issues. If you’ve tried the troubleshooting steps without success, don’t hesitate to call in a professional plumber for assistance.