Bathtub Faucet Won’t Turn Off: Causes and Troubleshooting (Quick Fixes)

When your bathtub faucet won’t turn off, it is typically a sign of a faulty cartridge needing replacement. Over time, the cartridge wears out, causing water to continue flowing even when the faucet is closed.

Here, we will cover everything, including causes, solutions, and prevention tips for a bathtub faucet that won’t turn off. So, let’s dive in.

Causes of a Bathtub Faucet That Won’t Turn Off

There are a few common causes of a bathtub faucet not turning off. Let’s discover them in a nutshell.

  • Leaking Faucet Handle
  • Faulty Cartridge
  • Malfunctioning Valve
  • Water Pressure Issues
  • Plumbing System Problems
  • Mold or Mildew Growth

These issues can often be resolved by replacing the worn-out faucet washer, repairing or replacing the cartridge or valve, and removing mineral buildup and clogs from the faucet.

Troubleshoot a Bathtub Faucet That Won’t Turn Off

If you are facing the issue of a bathtub faucet that won’t turn off, you can take a few troubleshooting steps to resolve the problem.

Step 1: Turn Off the Water Supply

The first step is to turn off the water supply to the bathtub. Locate the shut-off valve for the bathtub and turn it clockwise to stop the water flow.

Step 2: Remove the Faucet Handle

Next, you need to remove the faucet handle. It can usually be done by locating the screw or set screw on the handle and using a screwdriver or Allen wrench to loosen and remove it.

Step 3: Inspect the Components

Inspect the faucet components, such as the cartridge, O-rings, and washers, for any signs of damage or wear. If you notice any worn-out parts, they may need to be replaced.

Step 4: Reassemble the Faucet Handle

Finally, replace the worn-out parts with new ones. Ensure to correctly reassemble the faucet handle and turn on the water supply to test if the issue has been resolved.

Fixing a Bathtub Faucet That Won’t Turn Off

A few DIY methods exist to fix the issue and stop the water from running endlessly. Save money by fixing the problem and ensuring a properly functioning bathtub faucet. Let’s discover now.

Method 1: Changing the Faucet Washer

If your bathtub faucet won’t turn off, one possible DIY method is changing the faucet washer. The washer is a small rubber or silicone seal that prevents water from leaking from the faucet. Over time, the washer can wear out or become damaged, causing the faucet to stay on. 

To change the washer, turn the water supply off to the faucet, remove the handle and the escutcheon plate, and unscrew the stem assembly. 

Replace the old washer with a new one and reassemble the faucet. Turn on the water supply and check if the faucet turns off properly.

Method 2: Repairing or Replacing the Cartridge

If changing the faucet washer didn’t solve the problem, the issue might be with the cartridge. It is a device that controls the flow of water in the faucet. Over time, it can become worn out or damaged, preventing the faucet from turning off. 

To repair or replace the cartridge, you’ll need to turn off the water supply, remove the handle, escutcheon plate, and cartridge retaining nut, and then carefully remove the cartridge. 

Check for any signs of damage or wear, and install a new cartridge if necessary. Reassemble the faucet and check if the issue is resolved.

Method 3: Clearing Mineral Buildup and Clogs

Mineral buildup and clogs can also cause a bathtub faucet to not turn off. Over time, minerals from the water can accumulate inside the faucet, blocking the flow and preventing the faucet from shutting off completely. 

Soak the faucet in vinegar and water to dissolve the minerals to clear mineral buildup and clogs. If the buildup is severe, you may need a brush or a small wire to scrub the faucet.

When to Call a Professional Plumber?

Complex faucet issues can arise, requiring the expertise of a professional plumber. Non-standard or custom faucets often have unique mechanisms that can be challenging to diagnose and repair without specialized knowledge. 

Ways to Prevent Common Bathtub Faucet Issues

Regularly clean and lubricate the faucet components to ensure smooth operation. Inspect the handles, valves, and cartridges for any wear or damage. Replace any worn-out parts to prevent issues with turning off the faucet.

Following these preventive measures can avoid the frustration and inconvenience of a bathtub faucet not turning off.

The Cost of Repairing a Bathtub Faucet

The cost of repairing a bathtub faucet that won’t turn off can vary depending on the extent of the damage and complexity. In general, minor repairs, such as replacing a washer or cartridge, may cost around $50 to $100. 

People Also Ask

How do you fix a bathtub faucet that won’t shut off?

To fix a bathtub faucet that won’t shut off:

  • Start by turning off the main water supply.
  • Remove the screw cover at the base of the faucet handle.
  • Use a screwdriver to unscrew the handle and remove it.

Inspect the faucet stem end for any damage or wear. If necessary, replace any worn washers or damaged parts. Finally, reassemble the handle and turn on the water supply to test if the faucet shuts off properly.

How do you fix a faucet that won’t shut off completely?

Replace the worn-out cartridge to fix a faucet that won’t shut off completely. The cartridge controls the water flow and can wear out over time. Unscrew the handle, remove the old cartridge, and install a new one to restore proper function.

Why is my shower faucet still running when I turn it off?

If your shower faucet is still running when you turn it off, it may indicate a faulty cartridge. The cartridge controls the water flow in the faucet and can wear out over time. To fix this issue, you may need to replace the cartridge.

Why is my shower faucet not turning off all the way?

If your shower faucet is not turning off completely, it could be due to worn-out washers or a faulty cartridge. Replacing the washers or the cartridge should fix the issue and restore the faucet’s ability to turn off.

Why won’t my bathtub faucet turn off completely?

If your bathtub faucet keeps running even when you turn it off, it could be a sign of a worn-out cartridge needing replacement.

Last Notes

When your bathtub faucet won’t turn off, it can be a frustrating problem to deal with. One common reason for a faucet that won’t shut off is a worn-out cartridge. Over time, the cartridge can wear out and need to be replaced.

Another possible cause could be worn washers in the faucet stem. Examining and repairing these components can restore your faucet to proper working condition. It is recommended to consult a professional plumber.

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